Craftsman 1/2 HP GDO only opens half
I have this GDO that came with the house and my guess is at least 15 years old. Using any opening device (standard control inside garage, keypad outside garage or remotes in the car) the door will only go up half way. Then the unit will be dead for 30 seconds to a minute. Then pressing any of the buttons will close the door.
There is a green light on the standard control panel which turns off after the door gets stuck halfway on the way up. It stays turned off for 30 seconds to a minute. Then when the green light comes back on, making a clicking noise near the motor unit and a light flashing a few times, the garage door can be closed from its halfway open position by pressing the control panel.
The alignment green LEDs are solid green and with the motor arm disengaged the garage door is easy to lift all the way up.