Craftsman Garage Door Opener 1/2 hp Won't Close

My garage door won't close, unless i keep the button from garage held the whole time...opens fine from my remote, but won't close...lights blinking!!

---

The garage door not closing unless you hold the wall control button in until it is fully closed is a very common problem. Your safety sensors are out of alignment.

There is one on each side of your garage door, near the bottom.

They should both be at the same height. If you get down to eye level you can see that the indicator light on the recieving unit is blinking rapidly.

Twist the sending unit until the bracket bends slightly. When they are properly aligned, the indicator light will stay on constantly with no blinking.