If your garage door won t open this video should really help.
How to repair a craftsman garage door opener.
Insert the jumper wire into the wall control terminals on the garage door opener to see if the garage door moves.
After installing new door control wires if door control still does not operate garage door opener replace the door control.
All craftsman garage door opener manual has a section that talks about how to fix common and even more complicated problems that you may encounter with your garage door opener.
You will use it as a jumper wire in the next step.
Inspect door control wires for a short staple in wire replace wire 22 gauge wire as needed.
The troubleshooting section should be your go to section if you experience any issue.
Disconnect the wall control wire from your craftsman opener.
The garage door opener will not close the door and the light s flash.