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1

Could be a broken board, but its most like to be the sensor, or that the electronics are in a locked state due to obstruction. Did you try to hold down the wired press button for a few seconds? I think that will bypass the previous obstruction state To diagnose the sensor circuit, there are two ways: If you have a multimeter with continuity tester ...


2

If the door sensors do not indicate that they are happy, it's expected that the door does not want to move. Did you replace the sensor wiring when you replaced the sensors? If not, suspect the wiring on the unhappy side. Presumably it's the receiver (the light source will show green if it's powered, the receiver will only show green if it "sees" the light ...


2

If both sensor lights are not on, the door opener will not close and the light will blink because the opener thinks there is something in the door path. This is a safety measure. One light being off is usually due to either the two sensors getting out of alignment, a faulty connection, or a faulty sensor. You say that you have installed new door sensors. ...


1

Opening it with a coat hanger has got to be a million times easier than "hotwiring" the control panel. So this is a garage with no doors and no windows? Completely sealed except for the main door? Liftmaster has a web site which allows you to submit your registered email address and they will email you back a code. If you have not registered the opener the ...


1

If you do not have an entrance door to your garage (either to the interior of your house, or the exterior), there should be a key-based garage door release on the outside of your garage. You would obviously need the key for this, but it would release the garage door without resorting to prying it with a hanger or another similar hack. It is also very ...



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