Garage door opener quit working

It sounds like you have a bad connection on the logic board. Remove the board and check the printed circuit.

Cold solder joints are common on these logic boards.
Using a magnifying glass, inspect the solder joints on and around the transformer. A trained eye will see the crack right away.
Resolder the solder connections and retest..

It's time for a new opener.

Some electronic components become sensitive to temperature changes and will quit working. If you have more than one remote unit and the problem exists with them all then your logic board is bad.

If the wall button will operate the door up but none of the devices do then look at the wall button. Find the lock button and push it for 2 seconds and then try the remotes again. This is your vacation lock. You can get a manual at chamberlain.com. Now if the door does not open or close with the remotes you can reprogram them. Press the colored learn button on the motor head and then press the button on the remote. Repeat for each remote. If they fail to program you will need a new logic board. Thanks BB

The receiver portion of your logic board has quit.

TRY INSTALLING A SURGE PROTECTOR.

IF IT CONTINUES AFTER THAT YOU MAY HAVE A BAD CIRCUIT BOARD

TRY GETTING A SURGE PROTECTOR. 990LM

THE OPENER HAS NO BUILT IN SURGEE PROTECTOR AND THE MAIN CIRCUIT BOARD IS SENSITIVE.

It could be a bad logic board especially if you have had any electrical storms in the area. I would remove and check the logic board for burnt or missing traces on the printed circuit board.

The light is controlled by a relay on the circuit board. The problem is there are no schematics available and individual parts are not available.