Garage Door Not Opening Properly?

My Genie garage door opener will not reverse direction with the push of the wall button. The button is good and the switches are good. The sequencer board is good.

From a cold start with the door down: With the first push the light comes on, but door will not move. No sound is heard. Second push: nothing as with the rest of the pushes.

After disengagement of the carriage and moving it off of the switch: First push: The door motor starts and the screw rotates in the direction of pushing the door down. Second push: stops the motor. Third push: The door motor starts and the screw rotates in the direction of pushing the door down. Yes "down" no reversal of the motor.

After replacing the sequencer board with one from an operational unit same results only it won't go down, but it will go up. Is there something in the motor that isn't reversing? Could there be an open wire between the board and the motor?

I swapped capacitors and there was no difference in either unit. Could the transformer cause this? I've checked continuity between all wires except inside the motor. They all check fine. The continuity checks the same for the part on both units' parts i.e., capacitor and transformer. The transformers are grounded. I'm at a loss.

By John Franks