
Repair of old remote control that sometimes works
Need help how to repair old remote control for fan and lights. It has LCD Display that shows fan settings. It occasionally works, but for it to came alive I have to insert battery in and out multiple times until occasionally display and functions become active. Then after some time it goes dead again. What part of electronic component can be bad? Electric connections of batteries to board is 100% ok
Update:
You must have been right about the connection issue. As I was taking it apart to take pictures, it started working again. Here are the insides. The connections at the points where the wires attach to the board are solid, so the problem must lie somewhere else on the board. I would like to inspect the side that is hidden under the LCD, but I'm afraid that if I disconnect the screen from that rubber contact strip, I won't be able to realign it correctly during reassembly. Do you have any suggestions on how to do this properly?
Update 2: It's definitely a connection problem on the board. The signal disappeared as soon as I screwed the board back into the enclosure, which suggests that even slight flexing breaks a connection somewhere. For now, I've reassembled everything without screwing the board down, and it works. However, if the chances of successfully repairing it without making things wors are high, I would like to proceed.