Sears 1/2 hp GDO reverses direction
Lots of good info on thie forum. thank you.
I have an older unit without the door sensors. I recently replaced the drive gear. After restarting it reversed direction twice due to force on down movement (I forgot to adjust the limit switches before I turned I back on.) Now it will only run down for about 2 seconds then it reverses direction and stops. It does this with the door connected, door not connected and even with the chain off the sproket. I tried adjusting the force screws but that made no difference. I tried running it with the speed sensor plug disconnected. Same result.
During intallation of the drive gear, the instructions said to disconnect the speed sensor. At that time I wasn't quite sure where to disconnect it so I didn't. That didn't seem to be a problem, but I thought I'd mention it in case there's something involved there I can't think of.
I appreciate any advice you may have. Any ideas?
Pensacolian (1st forum entry)