This is a relatively new opener, we've only lived in this new build house a year and of course the opener is out of warranty. First it kept trying to drive itself when it was already down and wouldn't auto-reverse, instead it just tripped the breaker. Now it hums and won't move in any direction. I've detached the door and it rolls up and down fine. The slider part is so far down the track that you can't reattach the door.
I currently have it open and see no visual issues, no fried components on the logic board, capacitor looks okay, no broken gears, and when it's activated there is 0 movement. What should I try next? I'm off work for a surgery in 2 days, needless to say cash is tight.
Opener is a Chamberlain 8335W.
EDIT:
I phoned Chamberlain today and they were more helpful than I thought! Over the phone they couldn't narrow it down so have sent me replacement parts for almost everything. Now the only thing is should I replace them all at once or try to narrow it down to whatever failed?
Best Answer
From personal experience, I suspect the logic board - but it's a nasty dice roll as the things are about half the cost of a new opener, and a new opener comes with a warranty, while a new logic board does not, and if I recall correctly was not returnable either, so if it does not solve the problem you're out that money. Mine had no visible damage.
In my case I was sure there had been a nearby lighting strike, and the opener did not stop altogether (so that's different from yours), but driving itself into the floor and not autoreversing were things it did after the event. Pay attention to the fact that these behaviors in an opener are things that kill people, particularly children (and pets) when counting the cost.
Then again, if money is tight, consider disconnecting the opener (well, you have already done that) and just operating the door manually until money is less tight. When you do repair or replace the opener, make sure it has a surge suppressor on the outlet.