OK, so all of a sudden my wireless garage door opener operates intermittently. As in maybe once in every 20 times I push the button on the wireless opener it works. I opened it up, cleaned up some corroded contacts but no good.
Any ideas on what might cause all of a sudden such intermittent operation? I have a scope and can look at all the signals on the transmitter if need be, but there's also the possibility the problem is in the receiver.
Edited to add: The antenna? looks like a 1.25" long piece of 0.25" cardboard tube with two loosely spaced windings around it, and there is some small metallic thing inside the tube?
What sort of signal (and where) should I be probing to check the proper operation of the wireless transmitter? I figure these things are pretty generic, so if someone has worked with them before I'd appreciate any help.