DIYbanter - View Single Post - Stanley Garage Door Opener Beam Sensor Components

Rich256

wrote:
Without the sensor I can open the garage door with the remote control,
no problem. I can also close the door by pressing and holding the
hardwired pushbutton inside the garage. The only thing I can't do
right now is close the door with the remote because, by design, the
opener won't close the door if it can't find the sensor.

I'm sure it isn't an alignment problem since I've tried moving the
emitter directly in front of the receiver and the problem persists. I
tested the wiring too, since I've heard that is also a common problem
with beam sensors. It was all good.

I've been quoted $50 for a new sensor assembly. It would be a shame to
replace the whole thing when replacing a $2 component might do the
trick.

You obviously have isolated it to the sensors. And I expect that a $2
component is probably what it needs. Just the question if you want to
spend the time of tracing out the circuit and measuring voltages. I
never looked inside of those things but probably not a lot of
components. I would be most suspicious of the LED.