Garage door doesn't open or close
Once again my wife left this morning and the garage door would not close. It's a Liftmaster 1/2 HP Security Plus chain driven opener. The motor hums but nothing happens. The chain doesn't move or the stocket on top of the motor doesn't move either. Any suggestions?
Car Audio & Video - Chamberlain - Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage...
Answers & Comments
You should check the gears inside the box, After years , the gears get dry and die, you can by online or from Sears the kit and replace the old gears. I just changed mine...not too difficult :) .