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How to repair used 2021 custom membrane keypads?

How to repair used 2021 custom membrane keypads?

Oct 28, 2021

How to repair a TV remote yourself?

2021 custom membrane keypads If some of the buttons on the TV control panel of the device do not work, or the TV does not respond at all to the device, you can try to fix everything yourself. It is worth noting that many breakdowns are so simple that a person who is not even versed in radio engineering can repair the TV membrane keypads with his own hands.
custom membrane keypads

Content:

Why do the TV membrane keypads not work?

No TV response

Failure of some buttons

Checking the remote control

Video tutorials on repairing the remote control

Why does the TV membrane keypads not work?

The TV set has two remotes: the first is located on the TV box itself, and the second is membrane keypads (RC). To determine where the breakdown is, we will apply the elimination method. If, when you press the buttons on the TV, all functions are performed correctly, the membrane 2021 custom membrane keypads to blame.

If the opposite is true, then the TV box. To fix the buttons on the TV device itself, you need to know electronics and be able to solder. But an ordinary person can fix some malfunctions of the remote control.

There are several signs when the 2021 custom membrane keypads are not working.

When pressed, nothing happens, that is, the 2021 custom membrane keypads do not respond. Some functions do not work because the buttons do not work. These consequences can be caused by many reasons, based on which appropriate measures must be taken. We will talk about this further.

No TV response

The TV does not respond to your attempts to make the sound louder or quieter, change the channel, or change the settings. Such consequences are possible for the reasons described below.

Batteries are low

This malfunction is easy to detect with a tester, multimeter, voltmeter. We check the power supplies. They must have a minimum of 1.3 V. If at least one of them does not have this potential, buy new batteries.

Batteries are low

It is very important not to mix up plus and minus when changing batteries. The positive terminal is made in the form of a flat spiral of wire, and the negative terminal is made of an elongated one. If you have determined that the problem is not with the batteries, look further.

2021 custom membrane keypads assume several different cases:

Some parts inside the device flew off or the contact of their connection with the board was broken. The board itself cracked from the fall. To determine why the TV membrane 2021 custom membrane keypads not work, you need to disassemble your “friend”. This is done with care in the following order:

Remove the cap and take out the batteries.

They look to see if there are screws under them and on the console itself, which screw the case. If they are, they unscrew them; if not, they snap them off. Carefully insert a knife, a screwdriver, or an old card (plastic) between the halves of the membrane keypads case.

Parsing the 2021 custom membrane keypads

Turn the object slightly so that the halves move slightly apart. You should hear a click. This will mean that one of the latches has opened. Slide the device along the line and open the other locks until they all snap into place. Red arrows indicate elements that need to be carefully examined and shaken.

If they move relative to the board, you need to solder. 2021 custom membrane keypads If upon inspection, it is found that the board itself is cracked, you can repair it if this crack has gone only under the parts, as shown in the photo. It is necessary to solder all the dangling tracks with the corresponding mating parts with thin wires so that they do not close.

2021 custom membrane keypads Failure of some buttons

If the crack goes under the black resistive layer on the board, you need to buy a new membrane keypads device. It is impossible to fix it. How to repair a TV membrane 2021 custom membrane keypads your own hands, if some buttons work flawlessly, and for others to work, you need to press with a vengeance.

Heavy contamination of the PU by the TV

If the membrane keypads do not function well and the TV channels do not switch, the buttons may not work because the membrane keypads is heavily soiled with dust. In addition, you could spill tea or juice – if you accidentally move, the liquid flows inward, closing the contacts, or settles under them in the form of a sticky layer.

More damage to the device.

After that, the button on the control panel does not work, or several functions are not performed at once. Many people do not know how to repair TV membrane keypads with their own hands with such contamination. They begin to press hard, but at the same time cause even more damage to the device.

In order, in this case, to repair the TV membrane 2021 custom membrane keypads your own hands, you need to disassemble it. If you notice “sticky jam” on the gum or dirt on the contacts, follow these steps, remove stains with a lint-free cloth dampened with any alcohol. You cannot rub it with cotton – the villi will remain.

Erasing 2021 custom membrane keypads

The gum between the protruding parts (if the layer is sticky on top) can be wiped with an “ear stick” with alcohol. Some buttons do not work since the layer applied to the rubber pads is abraded. How to fix the TV 2021 custom membrane keypads in this case? You will not apply conductive spraying, but you can solve the problem in two other ways:
custom membrane keypads 2021

It is very important not to mix up plus and minus when changing batteries. The positive terminal is made in the form of a flat spiral of wire, and the negative terminal is made of an elongated one. If you have determined that the problem is not with the batteries, look further.

Conclusion 2021 custom membrane keypads

Buy a PU kit. It contains round contacts specifically to repair the TV membrane 2021 custom membrane keypads your own hands. Just stick them in the right place. If you did not get such a kit (it is not available for sale), you can use regular candy or chocolate foil. It needs to be glued in place of the worn layer.

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