I have a 1/2 HP Raynor Garage Door opener that is stuck. When I plug it in, the motor immediately tries to "shut" the door, although it's already shut. There are no sensor eyes (too old) so that's not the issue. It's almost like the sensor that tells the motor the door is shut is defective. I've pulled the red rope and disengaged the door from the chain. The door moves freely, but the motor still is trying to "shut" the door. When I tried to re-engage the door, I could not get the arm to reconnect. It's as if the plate that it connects to is too far forward and can't be reached. I'm ready to call someone to repair it, but I wanted to check on here first.
Is there anything I can do to fix/troubleshoot? Thanks in advance!
Without knowing the age of the opener it's tuff to trouble-shoot.
The door opener should fail running in the open direction, not down. Down only tells me that a relay's welded shut, probably due to a power spike or old age. Again, this is commont to all brands and a best guess from the info you provided. If this is the case then you need a new circuit board. Nothing you can do with the existing relay to correct it.
I'd call a repair guy. Shop around for someone that's familiar with your brand and be prepared to buy a new one if yours is old. Spare parts are not always available.
Thanks Shamus. I messed around with it some more last night. I was able to reconnect the arm and get the door to open by turning the large wheel on the opener (that's connected to the motor via a belt). When I plugged in the opener, it shut the door, but then kept trying to run. The opener is 20+ years old. Make me wonder if it's worth repairing or if I should just buy a new one.