Here is my problem. I have two garage doors. I only use one with a transmitter. I had two transmitters programmed for the one door. One transmitter stopped working so I used just one good transmitter. Now they both stopped working. I reprogrammed them for the other door and now neither door would open so I figured I had two bad transmitter and bought a new one. It is not working either. Can I have two bad receivers. I have no idea.

Anyone have a clue what can be wrong or what I should be looking for?
Barry