forgot to tell I look up the model but the make is lacking so I found the model number 155..P ... whatever.... I googled it... it gave chrysler car parts and other types of parts I really don't think you got a car hagging from your ceiling LOL
For the fuse as you suggested it can't be a fuse because it's operating a fuse is like a switch when it's good it let's power go by when it's burned the power has nothing to let the power pass so the opener operates .....
ooh hold on how low does the door go 2 -3 inches or 2 -3 feet you wrote that from here I can't see what you wrote so I'm asking in case it's not someone else note I remember