Remote control buttons have a conductive thin layer beneath. As time goes by this layer may get damaged because of friction and loose conductivity. As a result, although the batteries are full and you apply great pressures on the button they do not function. Annoying, isn't it?
Most of the people prefer to buy a new replica device as they are much more cheaper than the original ones. But there is very easy way to save your non-working original remote control.
Here is how:
Step 1: Open Up the Remote Control
Most of the remote controls have a screw inside the battery cover. Unscrew it and then separate the two halves of the control (the top and bottom plastic parts) gently. Be careful not to crack any plastic parts.
In general the remote control devices have 3 main parts:
1. Plastic covers (bottom and top)
2. Circuit board
3. Uni-body rubber buttons
Step 2: Clean the Circuit Board and the Rubber Buttons
The best way to clean circuit board and the rubber buttons is cotton + alcohol. Never use water.
After cleaning both the circuit board and rubber buttons you should check if the buttons are working before proceeding. The reason is; cleaning the circuit board and rubber buttons most of the time solve the issue.
If it's working. Welldone! :) I strongly advise you to clean your remote control periodically. (Especially for the ones used in dining room)
If the problem persist, don't worry. We will get over it. Follow the next steps.
Step 3: Fix the Non-working Buttons
All you need is some cyanoacrylate (super glue), aluminium foil, scissors and tweezers.
First cut very little pieces of aluminium foil that will exactly fit the size of the rubber button's conductive area. This foil is going to act as a conductor and when you press the button it will close the circuit.
When you're ready, drop a tiny amount of glue on the back of the rubber buttons that are not working and place the aluminium foils that you have prepared. Gently apply pressure on the foil with the tweezers but avoid sliping or damaging the foil.
Step 4: Final Check...
If you do follow the instructions and no other problem exists, you have a perfect working remote control again. :)