If at one fine moment the buttons on the TV remote control stopped pressing or the buttons are pressed, but the TV does not respond to pressing, it's time to fix the remote control. Possible causes of breakdown: You accidentally flooded the housing with water or dropped the device on the floor. If we already told the readers about how to do it, then this repair technology will obviously not be difficult for novice electricians. Next, we will tell you why the TV remote does not work and how to repair it yourself!
Sequencing
If the buttons on the TV remote control do not work, first, no matter how trite it sounds, check the batteries by replacing them with new ones. The situation has not changed? Try turning on the camera on your mobile phone, aiming it at the diode in front and see if it blinks when you press the buttons. The fact is that a person cannot see infrared radiation, but the camera captures it, as can be seen in the photo.
Does the diode not blink? So, in order to repair the TV remote control with your own hands, you need to disassemble it and check the condition inside. First, pull out the batteries and check if there are any screws under them that hold the case together, then visually inspect the back cover for screws. After unscrewing all the fastening parts, insert a straight screwdriver at the junction of the two parts of the case and separate them, as shown in the photo below.
Some models of TV remotes are fastened with regular latches, i.e. without screws. To disassemble such a case, it is enough to simply separate the connecting parts with a straight screwdriver. This must be done carefully so as not to damage or scratch the plastic!
So, the case is disassembled, now you need to carefully inspect all the details yourself: the board, the contact pads of the buttons, spring contacts for batteries, an emitting diode, conductive tracks and ceramic quartz.
Let's start with the spring contacts for the batteries. Check if the contact from the microcircuit is unsoldered, if everything is in order, go ahead. No - take a soldering iron and solder it carefully. By the way, you can, if you don't have a normal instrument at hand.
Also, look at the state of the spring itself, which is in contact with the battery, it may be heavily soiled and rusted. If so, to repair the TV remote control with your own hands, you need to clean it with sandpaper.
The next possible reason is the contamination of the contacts of the buttons with oily dirt. The appearance of this dirt - long use of the device, as a result of which the condensation of fat from the skin of the hands settles on the contact pads. If these pads are rubber, you must wipe them well with a swab dipped in alcohol or wet wipes. Also wipe the board as maybe dirt is shorting out the contacts, causing the buttons on the TV remote control to not work.
If the contacts are graphite-coated, the malfunction may be that this coating has worn off over time. Repairing the TV remote control in this case is quite simple - you need to take the foil from the chocolate bar, cut into small squares and glue the paper side to the contacts.
By the way, if the buttons on the TV remote control are not pressed well, you need to press hard on them, the cause of the malfunction is the same and you can repair the device by cleaning the contacts or restoring them.
If only some of the buttons do not work, and even then, the most necessary - turning on the TV, switching the volume or channels, then, most likely, the graphite spraying has worn out on them!
Also faulty ceramic quartz can be a possible cause of breakage. If the remote control does not work after a fall, then by 95% you can be sure that this element of the circuit has broken. It is quite simple to determine this on your own - shake the board, and if a rustle is heard from the quartz, it means that it is not functioning. Repair in this case comes down to replacing quartz.
If you can turn off / on the TV, change programs or sound only at close range, either the dead batteries or the diode are to blame. In the latter case, you can check the health of the emitting diode at home by visual inspection of the soldering, as well as by checking through the phone camera. If the diode is really hooked, it will also have to be replaced.
Well, the last malfunction is damage to the contact tracks. If you see cracks on the microcircuit, then repairs will be inappropriate here, and it is best to just buy a new remote control device.
You can clearly see how to repair some of the faults yourself in the video examples below:
Changing the buttons on the Samsung remote control
How do I fix the tracks on the board?
Proper cleaning of the contact pads
How do I glue the pieces of foil onto the rubber contacts?
What else is important to know?
If the buttons on the TV remote control do not work, you can also repair them yourself by purchasing a repair kit in ready-made patches and glue. Of course, it costs a lot, but one such kit is enough to repair 3-4 devices.
You can also, instead of sticking the patches, just drip a special glue called "kontaktol" onto the degreased rubber contacts of the buttons. The only problem is that it is quite expensive, but nevertheless, for a novice electrician, such glue will come in handy at home in order to repair other electrical appliances.
Finally, I would like to note - if your TV remote control jams or does not work due to contamination of the buttons, after thorough cleaning, we recommend that you wrap the device in a bag (even special ones are sold) or a thin film. In this case, fat will not get on the microcircuit and contact pads.