GDO only travels in one direction. Please help. Tnx
I have a 1993 Craftsman GDO, model 139.53636SRT.
Recently the door will only stay in the open position. The LED is ok, and the transmitters are working fine. The safety sensors are also ok and aligned. It only wants to travel in the open directions. The limit switch assembly is fine. I believe the board went bad..bc when the switch hits the up contact it should sent the signal back to the board so it can rotate the opposite direction. Any suggestions?