Be sure to read the part 15 notice in your GDO owners manual.
I had a similar occurrence due to a nearby lightning strike. Control worked
fine but when activated, the door traveled past the limit switches and the
motor kept running. The problem was in the logic board. Frankly, I don't see
why
they have to make controls for a GDO so complicated when a handful of cheap
relays will accomplish the same task and render the circuit relatively RF
proof.
73,
John, W4AWM
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