OK, I have read all the other questions about the Sears 1/2 horse GDO. But, I have not seen an answer to my problem yet. I recently had a lightning strike that knock out my GDO. I read on a Bulletin Board that this happens a lot. The recommendation was to replace the circuit board. Did that. Then needed to replace the sensors. Did that. Still cheaper than a new one and I am using it on my second door, so no big deal. Now it's a personal challenge to fix this thing.
The motor starts and reverses after 6 inches. The up and down adjustments are OK. The two stop adjustments are OK. There is nothing in the way of the sensors.