craftsman garage door opener
I have a 2000 craftsman garage door opener that was not going up without help. I took it apart to find that the main plastic gear was stripped. I ordered and replaced it along with the rest of the gears and when i put it back together it will only trave 6 inches and then retracts the same distance. it does not flash like it would if there was a obstruction. The door had no problem before the gear stripped so if you can explain what I might have done wrong it would be great.