Sears Craftsman GDO won't work.
I've got a pretty old GDO (1986 maybe) that I just replaced the nylon gear on. The door worked fine for a day but now the motor will not turn on. When I hit the remote or the wall switch the unit makes a buzzing noise (kind of like someone buzzing somebody into an apartment building) and then stops. I checked the logic board and it looks good, so I'm thinking the motor just crapped out on me. Any ideas?? Thanks for your help.