Craftsman Garage Door Operer
Have a 1/2 hp garage dooe opener about 10 years old that suddenly stopped working. There is a light on the back that was blinking 5 seconds, now blinking 2. There are no lights on either sender or reveiving sensors. Voltage at sending sensor was good; didn't check receiving side. There is an audible click when pressing the open button but no action. And the light bulb does not come on.