My new C455 opener hasn't worked correctly since purchased 2 weeks ago. The sensor lights go out every day. I pull and insert the power chord and they come on. I have changed the sensors and wiring and installed a replacement Logic board from Chamberlain. I am very good with mechanical and electrical issues. There are no shorts and wires are inserted into the logic board properly. Has anyone seen or heard of a problem like this? If not, I am returning the unit to Home Depot.
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