Stripped ?
Garage door stopped working the other day. Made a terrible grinding sound. Door and springs are ok, I replaced the alright about 1 1/2 years ago. I can lift it by hand and stays open about half way. If I lift it up further it wants to drop all the way.
Prior to this we started having funny issues where about 6 inches from the bottom, would go back up. I made a slight adjustment to the limits.. it went wonky when we hit some high temperatures so I thought maybe the springs were affected by the heat, but I know that's not the case.
Anyway, door was going down after the above fix, but now when going up wasnt going 100% of the way, stopped about 90% up but enough to get car in and out. Then this happened.
I think the gears are done but nothing is budging, chain is fully locked up. I dont see the chain stuck on anything. I have it disengaged from the chain but the chain won't move. I feel like if it it was locked up, still might work but I need some new parts now. Lots of plastic shavings came off.