Do-it-yourself wireless mouse repair for a computer. If your mouse is “dead” or do-it-yourself computer mouse repair

Today I will tell you how to do minor repairs computer mouse . Many of you may ask: why? Indeed, today it is easier to buy a new mouse than to mess with a faulty one and try to repair something there. And in some way you will be right. But there are objects or things that you get used to or become attached to, and their replacement is not always equivalent.

A computer mouse is exactly the subject that you get used to imperceptibly, and the replacement of an old rodent with a new one is immediately felt.
First of all, this is the feeling of the mouse in the palm of your hand, as well as the convenience and strength of pressing the keys. And if you use an expensive mouse that you can’t just buy in a store. In a word, you can always throw out the mouse, but you need to try to give it another life.

To disassemble the mouse, you need to unscrew the screw, which is located in the rear lower part of the case. In my design, you can see that the screw is located under the silicone “leg”. And there are mouse designs where such screws are covered with paper stickers, and the sticker is usually pierced to get to the screw.

With the tip of a screwdriver or scissors, pry off the edge of the leg and peel it off, pulling it to the side. If you have a sticker, then we pierce.

Now raise upper part housing and slightly pull towards you so that it comes out of the grooves located in front of the base of the housing.

In the following figure, the arrows mark some of the elements that are most subject to wear and tear, due to which the mouse starts to work poorly. Basically, these are microswitches and part of the USB cable at the entrance to the mouse body.

2. Faults.

The first common problem is when you move the mouse and the cursor stays in place, jerks, or you have to move the mouse several times to move the cursor. Such a malfunction manifests itself when the USB cable frays at the entrance to the mouse body from repeated bending of the wire.

It is removed simply and easily..
Use scissors or a knife to cut off the damaged section of the USB cable, indicated by the dotted line.

To make it convenient to work, we remove the board from the case. To do this, you need to bend the two latches that secure the board from behind.
We remove the upper insulation of the cable, and clean the ends of the cores. Who has a soldering iron, the ends lived.

Now we connect all the veins of both ends of the USB cable to each other. We take two veins of the corresponding color, for example, red, and twist it, and if there is a soldering iron, then we solder it.
I had heat shrink, and to insulate the connection, I first put it on the ends of the wires. If there is no heat shrink, then you can use electrical tape, tape or any other flexible insulating material.

The next step is to isolate the twists or solderings of the cores, and then evenly lay them in one line to get a large twist. As shown on the bottom of the picture.

Now we cover the twists with insulating material. I used heat shrink again to make it look nice. Although this is not important, because all the same, this beauty will hide inside. But still.

If you solder a little, then there is another option where you do not need to twist or solder. Here, the damaged section of the USB cable is simply cut off, stripped, tinned and soldered under the connector from the side of the tracks. When soldering, the sequence of colors of the wires that go into the top of the connector is repeated.

Second common fault- this is when you have to click the left mouse button several times to perform some action. And it also happens like this: you click once, and the click occurs twice. The reason for all this is the microswitch, which presses the left key.

In this case, we already need a soldering iron. Here we do this: solder the microswitch of the left mouse button and the “wheel”, and swap them. Most people use the wheel only for scrolling through pages, and very few people use it as an additional button. Therefore, we put this microswitch in place of the worn-out left one.

The microswitch is easily soldered, although it has three leads.
With the tip of the soldering iron, we simultaneously touch the middle and any of the extreme conclusions, while trying to lift this edge with our finger. You don't need to press hard.

You should end up with something like this:

Now we intercept and solder the opposite side of the microswitch, where we also lift it with a finger, and heat the two terminals with a sting.

If it didn’t work the first time, that is, the microswitch remained on the board, then we repeat the soldering procedure again: first we solder one side, and then the second. When both microswitches are soldered, swap them and solder back.

Very often situations arise when part of the solder remains in the hole into which the leg of the radio component is inserted.

If necessary, this is eliminated as follows: a regular needle or a needle from a disposable syringe is taken and inserted into the hole from the side of the radio components, and from the side of the tracks this hole is heated with a soldering iron. As the solder warms up, the needle will enter the hole and force the solder out.

Now it only remains to assemble the repaired rodent in reverse order and enjoy its work. When you put on the upper part of the case, first insert it into the grooves and slightly push forward so that it goes all the way.

I think now it will be easy for you to do small computer mouse repairs.
Good luck!

Good day dear readers!

The mouse and keyboard are among the most used peripherals. That is why these devices, especially mice, quickly have all sorts of problems in operation. It could be bad button actuation, double tap buttons with a single click, problems with the scroll wheel (moves in jerks), problems with device detection by the system. Most of the problems are caused by mechanical wear and dirt getting inside the mouse body.
If when you press the mouse buttons, they do not work well or a double click is triggered, then probable cause is due to mechanical wear. All elements of the manipulator are made of plastic and with frequent use they are quickly erased, there is a development. When you press the mouse button, it becomes not enough for the button to work reliably.

1. Mouse button not working

a) Detecting wear is fairly easy. You should disassemble the mouse, for this it is enough to unscrew one or two screws from its lower side. Mouse buttons can have a different design, but for the most part it is the plastic part of the top cover (or separate element), which, by means of a plastic lever, acts on a button soldered on a printed circuit board. On this plastic lever, the development appears. To restore the performance of the mouse, it is necessary to clean the surface of the lever with a needle file or sandpaper, providing a flat surface. Also pay attention to the reliability of the PCB fastening and the quality of the button solder spots.

b) We will not go far from this problem and we will analyze in more detail the quality of the button itself or, in other words, the mikrik, if the problem lies in the mikrik itself, then we can simply solder it and any old mouse can become a donor or purchase it in a special store, if there is one available nearby. To solder the mikrik, we heat the legs of the microswitch and prying with a knife (or pulling with your fingers from the back side) we pull out the switch, you need to do this simultaneously and quickly, ( when soldering, it is advisable not to overheat the button). After soldering on the board, it is necessary to clean the holes from the old solder so that you can easily insert and solder a working mikrik.

in) Let's look at an option in which we would do without a soldering iron. To do this, we need to disassemble the button, this is not difficult to do. We pry off the cover with a thin screwdriver or a needle, first from one side, then from the other, remove the cover. After removing the button, the button will fall out of the cover, which it is desirable not to lose. The problem is that over time, the tongue on the record begins to sag, we need to bend it slightly. We collect the button and check the mouse for performance.

2. Mouse wheel not working

To solve this problem, we, of course, need to disassemble the mouse, this time we will work with a wireless manipulator. And so we unscrew the screws on the bottom of the mouse and remove its upper part, then we unscrew all the screws that fasten the board to the bottom of the mouse body. Now that the board is unscrewed, lift it up and carefully pull the wheel out of the scroll sensor. So we got to the faulty element.

The reasons for the malfunction may be as follows, the mouse scroll mechanism has become loose, with such a malfunction, we could simply press the four antennae with pliers and it would seem that everything was fixed, but with such a repair in best cases your mouse would live another month. Also, the cause of the malfunction could be contaminated contacts of the spinning mechanism. Therefore, the next thing we need to do is to disassemble the scroll sensor. We bend four antennae that hold the insides of the sensing element

and bend the part that is soldered into the board with three legs

then we pull out the drum, inside which there are contacts.

Everything, the disassembly is over, now it remains only to eliminate and assemble back. We take a cotton swab, moisten it in some alcohol liquid and wipe the contact surface. Now, in reverse order, we assemble the entire mechanism back. After assembly, it is necessary to strengthen the mouse scroll mechanism, for this you need to install a U-shaped bracket from a metal plate.

We collect the mouse and look at the result of our labors.

3. PProblems with device detection by the system

Software errors in the operation of the manipulator are also possible. You should first check the operation of the mouse, if possible, on another computer or laptop, if errors also appear, then most likely the reason is in the hardware of the manipulator. Software errors are possible, most likely with game controllers that require the installation of additional drivers or software, you can also update drivers or hardware configuration in the device manager. With standard devices, problems with software very rare. But, nevertheless, if you have problems, try to find and install the appropriate driver. Also check that the controller is working properly. USB port or PS/2. You may need to update the driver motherboard to fix the problem.

4 In addition to everything, there are such malfunctions

1. Also, the reason for the poor performance of the buttons and the scroll wheel is ordinary dust, or rather the one that has accumulated inside the mouse case. After several months of operation, a lot of dust, lint, hair and other contaminants accumulate in the mouse. All this is reflected in the operation of the scroll wheel. The wheel becomes stiff and scrolling may be uneven. Disassemble the manipulator and carefully remove all dust and other dirt particles. The plastic case of the mouse can be wiped with wet wipes or washed in warm water. Avoid getting moisture on the PCB elements, and if this happens, do not use the mouse until the moisture is completely dry (preferably within a day).

2. Another reason for problems with the mouse may be a broken wire. Due to the vigorous use of the manipulator, thin wiring often breaks at the place where it is soldered to the mouse board or on the connector. In this case, you should also disassemble the mouse and inspect the place of soldering of the wires, as well as check the connector. If a wire break or a soldered connector leg is detected, the malfunction should be eliminated. If you do not have sufficient skills, then contact a specialist.

3. The next problem with the mouse may lie in the connector for connecting the device to the computer. Modern manipulators connect via a USB connector, but there are still devices on the market that connect via a PS / 2 port. It is this port that often causes various malfunctions. It's all about unreliable contacts and the ability of thin connector pins to easily bend and break off. If the contacts are crushed, they should be carefully aligned. In this case, be careful not to damage adjacent contacts. With a USB connector, poor contact problems are less common and appear when a device is connected to a heavily contaminated port.

Other errors in the operation of the mouse are probably related to the output of the radio elements of the device, and in this case it is problematic to fix the mouse on your own without special equipment. It remains only to purchase a new mouse.

Good luck to everyone and until the new repair.

Indeed, without it, the full operation of the machine is almost impossible. Next, we will tell you how to disassemble and repair a computer mouse.

As a rule, these devices are quite reliable, a good mouse will last for several years, but it happens that over time it starts to function poorly or stops working altogether. Most often, buttons or a wheel can fail. A breakdown can occur for various reasons, but this is not a reason to carry the device in for repair or change it to a new one, since the problem can be completely trifling and can be solved in a matter of minutes. Due to the fact that the mouse is not a complex device, you can easily repair it yourself, extending its service life by more than one year. Very often, when opening the mouse, it turns out that the cause of the breakdown was a common blockage, but even if not, then it will not be difficult to make minor repairs.

To fix the mouse yourself, you will need not so many tools that are present in almost every home. A screwdriver, pliers and scissors is the minimum required for the job, but perhaps a soldering iron as well. In addition to the absence of material costs, a big plus is that you can immediately ensure the normal operation of the computer and will not lose precious time shopping and workshops.

There may not be many reasons why the mouse does not respond to your actions at all or its individual elements (buttons, wheel) have stopped working:

• there was a wire chafing;
• the integrity of the board is broken;
• the wheel is loosened;
• dried grease, which processed the mechanism from the inside;
• broken scroll sensor;
• clogged optical sensor;
• defective LED;
• the button mechanism loosened or failed.

Most of these breakdowns can be easily fixed at home by determining the cause after opening the case of the device.

How to disassemble a computer mouse

To repair or clean the device, there is no other option but to disassemble the mouse. As they say, our person is able to disassemble everything, most importantly, then return all the structural elements to their place and not find unnecessary details during assembly.

So, to open the case and disassemble the mouse, you need to arm yourself with a Phillips screwdriver, and then begin to perform a certain sequence of actions:

Regardless of which mouse you need to open, wired or wireless, the principle of disassembling any mouse will be the same. The main thing is to carefully remove the cover and board, as some parts are very fragile. After the procedures, the device will be assembled in the reverse order, it is important not to lose all the unscrewed screws until the assembly.

Implementation of repairs

After it was possible to disassemble the mouse, the cause of its malfunction will immediately become clear, it is possible that it will not be necessary to carry out repairs, because often the problem lies in the usual blockage. Then it is enough to carry out preventive work, such as cleaning the mouse, and the device will again begin to please with its performance.

You can clean the surface of the printed circuit board with a small brush, a piece of cloth (necessarily lint-free), a cotton pad or a stick. After brushing off the first dust, moisten a cotton pad or cloth with alcohol and gently wipe all the elements of the board, the wheel, as well as the inside of the case. The mouse's optical sensor is easy to clean with a toothpick and cotton wool soaked in alcohol.

How to fix mouse wheel

Wheel failure is a fairly common problem. If you notice that the wheel scrolls the slider on the screen in leaps and bounds, then most likely the mouse just has a loose scrolling mechanism. To fix it, use small pliers to press the metal clips that secure the sensor to the plastic elements of the mechanism. It is important not to overdo it and not break the details. Check how the wheel spins after the procedure.

In the case when the wheel scrolls and does not react in any way to your actions, most likely, part of its axis has broken off. Using a paper clip, you can build a new mount. Straighten the paperclip, bend in half, twist. Measure the resulting part along the length of the broken part, adding 1-2 mm, bite off the excess with wire cutters. Now it remains only to red-hot the edge of the new axle with a lighter and press it to the place of the broken one. After the material hardens, put the wheel in place and check how it scrolls.

If you have a wired mouse and the wire is chafed, this can be fixed with twisting or soldering.

Carefully cut the insulation in the place where damage is noticed, bare the ends of the wires, twist them together by color. First insulate the twists with heat shrink or electrical tape, cover all the twists together with insulation.

If you decide to use a soldering iron, the damaged part of the wire is simply cut off, the ends of the veins are tinned with solder, then soldered to the board. It is important not to confuse the location of the wires and solder everything in the same places, because the common color scheme No, and each manufacturer chooses the colors of the veins at its discretion.

How to fix buttons

It often happens that one or more mouse buttons stop working, first of all they should be cleaned, perhaps the matter is in the plaque that accumulates over time.

When the button still works, but often does not work when pressed, then the problem must be sought in its pusher, which could be erased over time, which is due to poor contact with the microswitch. If a small dent is found, it is enough to fill it with a drop of molten plastic so that the button starts functioning again.

If the cause persists, the microswitch may be at fault. In this case, you need to unsolder the old switch and put in its place a new one or taken from another mouse.

Some button problems can be solved without disassembling the mouse. Before trying to repair the device, it is useful to delve into the settings of the mouse. It is important to make sure that the sticky button feature is disabled and check the drivers on which it largely depends

The computer mouse is an important component of any computer. It is hard to imagine that the owner of a PC did not have a mouse, because without it the full operation of the machine is almost impossible. Next, we will tell you how to disassemble and repair a computer mouse.

Learn how to disassemble and repair a computer mouse

As a rule, these devices are quite reliable, a good mouse will last for several years, but it happens that over time it starts to function poorly or stops working altogether. Most often, buttons or a wheel can fail. A breakdown can occur for various reasons, but this is not a reason to carry the device in for repair or change it to a new one, since the problem can be completely trifling and can be solved in a matter of minutes. Due to the fact that the mouse is not a complex device, you can easily repair it yourself, extending its life by more than one year. Very often, when opening the mouse, it turns out that the cause of the breakdown was a common blockage, but even if not, then it will not be difficult to make minor repairs.

To fix the mouse yourself, you will need not so many tools that are present in almost every home. A screwdriver, pliers and scissors is the minimum required for the job, but perhaps a soldering iron as well. In addition to the absence of material costs, a big plus is that you can immediately ensure the normal operation of the computer and will not lose precious time shopping and workshops.

Common causes of breakdown

There may not be many reasons why the mouse does not respond to your actions at all or its individual elements (buttons, wheel) have stopped working:

• there was a wire chafing;
• the integrity of the board is broken;
• the wheel is loosened;
• dried grease, which processed the mechanism from the inside;
• broken scroll sensor;
• clogged optical sensor;
• defective LED;
• the button mechanism loosened or failed.

Most of these breakdowns can be easily fixed at home by determining the cause after opening the case of the device.

How to disassemble a computer mouse

To repair or clean the device, there is no other option but to disassemble the mouse. As they say, our person is able to disassemble everything, most importantly, then return all the structural elements to their place and not find unnecessary details during assembly.

So, to open the case and disassemble the mouse, you need to arm yourself with a Phillips screwdriver, and then begin to perform a certain sequence of actions:

Regardless of which mouse you need to open, wired or wireless, the principle of disassembling any mouse will be the same. The main thing is to carefully remove the cover and board, as some parts are very fragile. After the procedures, the device will be assembled in the reverse order, it is important not to lose all the unscrewed screws until the assembly.

Implementation of repairs

After it was possible to disassemble the mouse, the cause of its malfunction will immediately become clear, it is possible that it will not be necessary to carry out repairs, because often the problem lies in the usual blockage. Then it is enough to carry out preventive work, such as cleaning the mouse, and the device will again begin to please with its performance.

You can clean the surface of the printed circuit board with a small brush, a piece of cloth (necessarily lint-free), a cotton pad or a stick. After brushing off the first dust, moisten a cotton pad or cloth with alcohol and gently wipe all the elements of the board, the wheel, as well as the inside of the case. Optical sensor mice are easy to clean with a toothpick and cotton wool soaked in alcohol.

How to fix mouse wheel

Wheel failure is a fairly common problem. If you notice that the wheel scrolls the slider on the screen in leaps and bounds, then most likely the mouse just has a loose scrolling mechanism. To fix it, use small pliers to press the metal clips that secure the sensor to the plastic elements of the mechanism. It is important not to overdo it and not break the details. Check how the wheel spins after the procedure.

In the case when the wheel scrolls and does not react in any way to your actions, most likely, part of its axis has broken off. Using a paper clip, you can build a new mount. Straighten the paperclip, bend in half, twist. Measure the resulting part along the length of the broken part, adding 1-2 mm, bite off the excess with wire cutters. Now it remains only to red-hot the edge of the new axle with a lighter and press it to the place of the broken one. After the material hardens, put the wheel in place and check how it scrolls.

Wire repair

If you have a wired mouse and the wire is chafed, this can be fixed with twisting or soldering.

Carefully cut the insulation in the place where damage is noticed, bare the ends of the wires, twist them together by color. First insulate the twists with heat shrink or electrical tape, cover all the twists together with insulation.

If you decide to use a soldering iron, the damaged part of the wire is simply cut off, the ends of the veins are tinned with solder, then soldered to the board. It is important not to confuse the location of the wires and solder everything in the same places, because there is no common color scheme and each manufacturer chooses the colors of the veins at its discretion.

How to fix buttons

It often happens that one or more mouse buttons stop working, first of all they should be cleaned, perhaps the matter is in the plaque that accumulates over time.

When the button still works, but often does not work when pressed, then the problem must be sought in its pusher, which could be erased over time, which is due to poor contact with the microswitch. If a small dent is found, it is enough to fill it with a drop of molten plastic so that the button starts functioning again.

If the cause persists, the microswitch may be at fault. In this case, you need to unsolder the old switch and put in its place a new one or taken from another mouse.

Some button problems can be solved without disassembling the mouse. Before trying to repair the device, it is useful to delve into the settings of the mouse. It is important to make sure that the sticky button feature is disabled and check the drivers that largely affect the operation of a computer mouse.

NastroyVse.ru

How to repair a computer mouse

Computer mice, as well as computer keyboards, are among the cheapest input devices. Quite often, users who have noticed problems with these devices have the idea of ​​simply throwing this outdated trash in the trash, and in return, purchase new high-tech wireless devices input. In fairness, it should be noted that not all modern wireless mice are highly reliable. Sometimes even the most expensive products of well-known manufacturers refuse to function normally. Lack of response to pressing the left key, inaccurate cursor positioning, and many other typical malfunctions of wireless mice can and should be repaired on your own. Within the framework of this publication, a typical wireless problem will be solved. Logitech mice M205 is bad left key actuation.

First, you need to measure the characteristics of the AA element. This AA battery must have a nominal voltage of 1.5V. If this value is too low, replace the AA element.

Secondly, check the operability of the optical receiver-transmitter. It's no secret that the M205 wireless mouse emits infrared waves, so the operation of its emitter can only be seen on a video shot on a mobile phone. Cheaper mice emit red light that is visible to the human eye.

And thirdly, check the quality of the operation of the right and left keys. If the sound of pressing the right key is significantly louder and clearer than the sound that the pressed left button makes, then this clearly indicates a strong wear of the microswitch of the left key. It is because of the defect of the microswitch that you have to press the left button harder and harder. Why does it fail completely.

How to disassemble and repair a computer mouse

First, you need to remove the battery - an AA battery. It is hidden under the top cover. For a simple and quick extraction of the latter, you need to click on special button from the reverse side.

Second, turn the mouse over and look for the stickers on the legs. It is under these stickers that two small self-tapping screws are hidden. Take a screwdriver to repair mobile phones(under the cross slot) and unscrew.

Thirdly, we pry the latches by prying the latches.

Fourthly, with a smooth, confident movement, we pull the upper part of the mouse towards ourselves, supporting the base. If you pry a little with a screwdriver, the mouse opens easily.

Fifth, you need to unscrew the one and only screw that holds the circuit board.

Also, the board is held by two plastic latches, which are easily wrung out with a flat screwdriver.

Important tip: always support your soulmate, where the battery compartment is located. If this is not done, then there is a high probability that the wires connecting them can be easily broken.

Sixth, find the microswitches on the PCB. Try pressing a screwdriver on the microscopic button on both the left and right microswitches. The click sound from pressing should be sonorous and clear. If so, then the switching plate in the microswitch has not yet gained critical mechanical fatigue, and the special arc-shaped loop responsible for returning the button to the initial state, has normal elasticity. If there is no characteristic click sound or it is indistinct, then it's time to disassemble the microswitch.

How a micro switch works

To repair a microswitch, you need to at least know how it works and functions. Under the lid there is a complex structure, consisting of the thinnest brass plate with a spring-loaded arc, as well as three complex-shaped plates at the base. In fact, the plate with a U-shaped cutout and a spring-loaded arc is the main switching element in the switch. If for any reason it is deformed, broken or dirty, then the switching will not occur incorrectly.

Algorithm for diagnostics and repair of the microswitch

Find contacts on reverse side printed circuit board that come from the microswitch. Connect Digital measuring device(multimeter) to these heels and measure the resistance of the normally closed contact connection in the microswitch. If the device, switched on in the dialing mode, beeps, the microswitch is working. If he does not publish any sound signal, but, on the contrary, shows a certain voltage drop - the microswitch is faulty.

microswitch repair

As a rule, the vast majority of repairmen do not repair switches - they solve this problem by replacing them. Ordinary users may be deprived of this opportunity. Precisely for ordinary people simple recommendations for repairing the microswitch will be given.

First, you need to remove the cover. This is easy to do with a slotted slotted screwdriver.

Thirdly, gently pry with tweezers to remove the U-shaped plate.

Fourth, remove any traces of dirt and oxidation with a fine diamond-tipped file. If there is no needle file, then you can use sandpaper with as fine grit as you can find. Then remove microscopic metal chips with a toothbrush.

And fifthly, either file or sandpaper the contact heels on the plate. As a rule, they have an oxide film. The final step is to put the plate in its rightful place and close the lid. Important tip: if you have thick fingers, use tweezers to set the record.

After repairing the microswitch, it is necessary to assemble the mouse. As a rule, all manipulations must be performed in an order that will be exactly the opposite of the disassembly algorithm.

muzhik-v-dome.ru

How to disassemble the mouse to fix the damage?

A computer mouse is a manipulator that allows the user to control the cursor on the screen. This device is quite reliable and with careful use and proper care can last for many years. Very often, the mouse stops working due to a mere trifle, and then the owner himself chooses what to do next: throw away the old manipulator and purchase a new one, or try to find out the cause of the breakdown and repair his assistant. Here the question arises, how to disassemble the mouse in order to get to its internal mechanism.

There are some of the most common types of breakdowns. computer mice repairable. This can be rubbing of the wire when leaving the case, if the mouse is wired, jamming of the button, usually the left one, because it is used more often, or poor operation of the wheel. These are the breakdowns that can be fixed and extend the life of your assistant.

Although the device of the manipulator seems simple in appearance, there are still problems with how to disassemble the mouse. Depending on the model, it is fastened with one or two screws. In some devices, the screw is visible, but most manufacturers hide the fasteners under stickers or pedestals for a more aesthetic appearance. Therefore, in order to find the screw, you need to carefully examine the sticker for the presence of deflections in the shape of a circle, if there are, then you need to peel it off, if there are none, then you need to look under the thrust bearings. The latter should be removed carefully, then put back into place, otherwise the mouse will not slide well on the rug.

Having unscrewed all the screws, it is necessary to separate the body of the manipulator into halves and remove the upper part. How to disassemble the mouse further, in most cases there are no questions, because printed circuit board usually not fixed by anything, but in some models it can be screwed with small screws, so you need to be careful. If the board cannot be removed, then all existing fasteners should be unscrewed.

The mouse can also be mounted on latches; to determine them, you need to go through the junction of the halves with a screwdriver and open them. When disassembling the manipulator, it is important to remember exactly how the parts are located, so that you can put them back together correctly later. Do not touch the optical prism, as well as other elements of the optics. If, nevertheless, it was not possible to avoid touching, then dirty traces should be wiped with a napkin with special liquid for cleaning optical parts.

Many users have a question about how to disassemble a mouse if it is wireless. First you need to turn off your laptop or computer. Wireless mice for laptops, they are disassembled in almost the same way as wired ones. In the center of the manipulator is a silver button, you need to press it, remove the cover and remove the AA batteries.

Unscrew all fasteners with a jeweler's screwdriver. It is also necessary to get rid of the rubberized base located on the bottom cover. This can be done with a nail file. The mouse should be divided into two parts. On the bottom is the board, scroll wheel and antenna. To pull out the board, you need to unscrew the four bolts. After that, the mouse is completely ready for inspection and repair.

fb.ru

Do It Yourself: Mouse Repair Quickly

tigra_alive (tigra_alive) wrote, 2008-12-15 15:45:00 tigra_alive tigra_alive 2008-12-15 15:45:00 employees of new wired mice instead of broken ones, is acute. On the other hand, in the vast majority of cases, fixing a wired mouse is a process so simple that it's just ridiculous. So I decided to write this detailed instructions for anyone who might find it difficult. This is such an anti-crisis life hack if you want. I note that a new mouse is of course always better than an old one, if you buy it wisely. But when there is no way out and the mouse is urgently needed, a quick and simple ability to fix the mouse saves a lot. Indeed, in the vast majority (more than 90% in my experience) of cases, there is only one breakdown: the cores in the cable connecting the mouse to the computer are torn. This always happens in the place where the cable exits the mouse. We will restore it. So, put testers, oscilloscopes and a soldering iron aside, they are not needed. We will need: electrical tape, a knife and a Phillips screwdriver. In the field conditions of warehouses and other premises far from the server room, electrical tape is easily replaced with adhesive tape, and a knife, for example, with scissors.

A spray bottle with plastic cleaning liquid and a napkin is also highly desirable. Before starting repairs, it is very advisable to wipe and clean the mouse from the outside with them, for example, if you don’t want to catch some kind of skin disease :-) Alcohol or vodka is even better :-)) and a clean rag. In addition, even an optical mouse sometimes needs to be wiped from below, ripping off tons of dirt from the places of contact with the table, otherwise the distance between the table and the mouse increases, and it works worse.

The first thing to do with the mouse is, of course, turn it off. Why scrape off the dirt.

Spin the mouse and shoot top cover. To remove the cover, it is usually necessary, after unscrewing the screws, to move it slightly back and then up. All actions must be done easily, without undue force, we don’t need to break the lid fasteners, right?

This is roughly what it looks like.

But this is the place where the mouse cable usually frays. Our task is to restore the cable.

We release the mouse wire in the place where it comes out of the mouse, and slightly cut the cable sheath from the edge, trying not to cut the wires.

We take the tail of the cable sheath in the left hand, all the cores in the right hand, and carefully tear the sheath with the help of the cores until the cores are free a couple of centimeters above the place where the wire came out of the mouse. If some vein breaks, it's not scary - most likely it will break where it has already frayed.

The veins that have frayed are usually immediately visible, at the point of rupture, only the sheath connects the wire of the vein, so the vein sticks out at an angle there. Such veins can and should be boldly torn to the end in this place.

Then try to pull the remaining cores in different directions in the same place of the cable - they can also be torn. If so, they will break easily. Not scary; feel free to tear them apart.

You clean the ends of the veins. Better straight with your fingers and nails - they are thin and so there is less chance of cutting the wire inside the core. We are not muslin young ladies, but admins, right? :) Twist them together as in the photo.

Now wind the twisted core around you - this will give a reliable connection.

Thus it is necessary to do with all broken veins.

Let's start insulating the wires. We cut off a piece of electrical tape (well, or adhesive tape, what do you have there?) 8-10 centimeters. We take any wire and wrap the edge of electrical tape around it, like this.

Now, without cutting anything off, we fasten the rest of the wires to it with the same piece, one wire for one and a half turns of electrical tape. Thus, we isolate them at the same time.

Not torn cores can not be wound.

Cut off the excess shell and excess electrical tape.

Insert the wire back into the mouse latch. We make sure that the wire does not interfere with the moving elements of the mouse, such as the wheel or buttons. The wire also should not prevent us from putting the mouse back together - make sure that it does not fall into the grooves on the muzzle of the mouse, if any, and on the edge of the case, where the mouse cover and its bottom will be connected.

After making sure of this, insert the front part of the cover into the grooves, if any, connect the cover to the bottom, and screw it on with a screw (screws, if there are several). Remember the assembly rule: before tightening each screw, turn it counterclockwise a couple of times to get into the thread already cut with self-tapping screws.

Fine. Now be sure to turn off the computer (if the mouse is PS / 2), stick the mouse in, turn on the computer, boot up and check how it works. Well, or just stick a mouse if it's USB.

And feel free to go drink tea. Well, or whatever you have there stronger.

Tags: iron, note to the hostess

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Computer mouse repair

Today it is difficult to imagine life without computer technology. With the advent of personal computers custom GUI the computer mouse has become an integral part of it. Modern optical mouse able to serve without repair for many years, but nothing lasts forever and sooner or later it stops working as it should. It is rarely taken to the workshop, as for the price it will most likely cost more than a new one. Therefore, they usually repair the mouse themselves or buy a new one.

The USB mouse that I will be repairing has served me for 5 years. The first repair was 3 years after the purchase (I cleaned the buttons). Recently, the left button began to click badly again, and this time page scrolling stopped working correctly.

Mouse disassembly

To disassemble the mouse, you need to find and unscrew the mounting screws from the bottom side. On this model, the cover is fixed with one screw (there are models on which it is attached with two or more).

After unscrewing the screw, you need to slightly lift the cover (behind where the screw is) to move it forward so as not to break off the latches on the cover.

As you can see, in the photo, the board with the parts is simply pressed by the cover to the base (on some models it is fixed with screws or a latch).

Cause of malfunction

As buttons, tact buttons or momentary microswitches are usually used. The contact plate of the tact button, which is usually silver-coated, oxidizes more and more over time, that is, the tarnish film becomes thicker and when the button is pressed lightly, crushing the tarnish films does not cause electrical conductivity even due to the tunnel effect. In other words, oxides interfere with the normal operation of the buttons.

The buttons should be replaced with new ones, but, as always, at the right time they are not at hand and it remains only to repair them. In addition, it will not be difficult to restore their performance.

Disassembly and cleaning

To disassemble the button, you need to insert a knife or other suitable tool between the cover and its base, and, prying it, rivet the rivets. I advise you to leave the cover on one rivet, so that later it will be easier to assemble the button back.

In the blue circle are oxidized metal plates.

From cleaning with a cotton swab soaked in alcohol, there will be almost no sense; instead, it is better to rub them against a sheet of paper with pressure. The contacts inside the case are “grinded” with a match or a toothpick.

After cleaning they looked like this.

Button Assembly

Metal plates should be placed with the convex side up. When assembling, it is not advisable to touch the plates from the side of the contacts; it is better to use non-magnetic tweezers for installation.

In some varieties of tact buttons there are rubber shock absorbers, their location is almost impossible to confuse.

After installing the shock absorbers and the upper pressing parts of the buttons, you can close the covers, and then rivet or glue them.

Encoder repair

Surely, many users have encountered such a breakdown, in which, during the rotation of the mouse wheel, the page moves in jerks, the reaction is inadequate or it does not exist at all. Typically, these kinds of signs indicate a malfunction of a device called an encoder (rotation angle sensor), which is responsible for this option.

Disassembly of the angle sensor

To disassemble it, it is necessary to unbend the metal tabs holding the plastic body of the sensor.

Then, slightly moving the encoder base, you can easily pull out the plate, which is installed to limit the scrolling step by clearly fixing the position of the petals on the contacts. After him, and the disk itself with copper petals.

Most often, the breakdown is caused by the fact that the copper petals, systematically sliding over the same place, eventually wear out the case and contacts, leaving recesses on them. Due to the particles of plastic, which are dragged by the petals (from the case to the contacts), the conductivity of the signals worsens, that is, the contacts are “dirty”.

First you need to clean the encoder from grease, dirt and oxides. Then the copper petals can be slightly bent (from the disk to the contacts).

If the grooves are deep, you can move the petals so that they no longer fall on them.

During assembly, it is desirable to apply technical petroleum jelly to the contacts; it will significantly extend the life of the sensor.

The metal paws of the sensor housing do not need to be strongly clamped, otherwise the mouse wheel will spin tightly.

With such simple manipulations, you can restore the working capacity of a computer mouse, which you are so used to.

Note

If possible, it is better to immediately replace the buttons and the encoder with new ones, they will last longer, and also save time and nerves.

When assembling the mouse, do not forget to clean the optical lens from dirt and lint.

The weakest point of a modern computer mouse is a scroller, a scroll wheel. Sometimes the wheel fails in the first week after purchase. Scrolling becomes capricious, does not work for a short rotation, scrolling accuracy is lost, large gaps are obtained with intensive scrolling, etc. And sometimes it happens that the window scrolls in reverse side!
This will throw anyone off balance.

Mum! She won't scroll! Again!!!

1. Mouse with optical scroll wheel sensor

2. Mouse with mechanical scroll wheel sensor

We remove all unnecessary and see an electromechanical encoder, which is a bit like a tuning resistor. Here it is, with an orange octahedron inside.

Carefully bend the insides away from the frame, and if you soldered the encoder, then just disassemble it. The metal latch is usually mounted on plastic legs. Everything is removed very easily, the main thing is to work without fanaticism.

And we see inside the true reason for the failure of the scroll wheel: the same garbage and dirt. Most likely this is a mixture of silicone grease, frayed dust and hairs. The contact springs are also covered in dirt.

We take cotton wool, dip it in alcohol (isopropyl or ethyl), vodka, beer or special. cleaner for electronics contacts. Acetone is better not to use, because. there is a risk of dissolution and deformation of the plastic parts of the encoder.
Next, carefully wipe the contact pads and springs. Be extra careful when cleaning the springs, otherwise you can ruin everything.

I think the difference is clear. Look how much dirt has gathered on the cotton wool.

Scroll wheel elasticity tweak