I have a 1/2 hp craftsman door opener. Model 41A4315-7d. Door goes up fine. Will only go down a foot. It is not the door sensors as they are both lit up and sensing fine (I've even tried disconnecting the sensors). Door will go down only if I hold the wall button. Door will not go down if I hold the remote button. Is it the start capacitor?

SOURCE: Door will only close when held down

That normally happens when the sensors aren't aligned. Both sensors have led lights on them the yellow/orange one will stay on all the time the green one will go out if it cant see the other sensor. Possibly theres a wire that's broken or the other sensor is really out of alignment. Check every inch of wiring from the sensor to the opener, remove wire nuts if present and check the connections. The wires that are used are small, solid and can break easily. Also see if there's a staple that's too tight, move the wire abit where it's stapled and look for damage.

SOURCE: GARAGE DOOR OPENS BUT WILL NOT CLOSE AUTOMATICALLY

is bulb on motor flashing 10 times. then you have electric eye problem. otherwise, sounds like you need to increase down force a hair. adjustement is on logic board, right knob.

SOURCE: remotes not working door won't go down

safety beam problems

SOURCE: My Craftsman 139.53879 remote won't learn the code

I have no idea what a 132C2105-3B is but try this. Hold the button down on the remote and then press and immediately release the smart/learn button. If the remote is the correct one for your opener it should work.

SOURCE: Liftmaster 1/2 horse Model HBW0777 acts like the

If the main light flashes 10 times when the door reverses it is a door sensor problem. Look closely at the green lights to make sure one isn't flickering ever so slightly. Tweak them a bit.

Testimonial: "It is working properly now Thank You!"