I'm having trouble with a 9 year-old Overhead Door Legacy garage door.
The sensors work fine when the door is within 2' of closed, but they both lose power (both lights, green on one sensor, red on other, go out, and the sensor voltage at the motor unit goes to zero) as the door opens. Sometimes they come back on as the door nears 4' of closed, always back on within a foot or two.
Symptoms lead me to believe I have a lose connection somewhere, but I don't know much about garage door openers. Anyone know how the short would be related to the garage door's position?
I've gone over the wiring looking for a bad connection and haven't found anything, wondering if the main unit may be causing the problem.
Thanks for any help, Mark