My genie screw drive is broken. The problem gradually got worse and now it is useless.
It's a starting problem. About half the time, it stalls before it even starts, either opening or closing. Just sits there and buzzes. Except, when it does get going, it runs the door just fine. It never stalls or reverses, and has tons of power, so long as it does get going.
It stalls even when the manual disconnect is pulled so the screw is free. The door is not binding.
Since its a starting problem I replaced the cap even though the old one tested fine.
I can only assume something in the gearbox is sheared or wallowed. I guess I'll take it down and try to tear it apart.