What does the purple button light flashing on 1/2 horsepower craftsman garage door opener

SOURCE: Remotes don't work

I recently had Verizon FIOS equipment installed in my garage (for phone, internet and TV), which is plugged into a 110 volt electrical outlet. Thinking this equipment might be causing some RF interference, I unplugged the FIOS equipment, and both garage door openers immediately worked perfectly again!
After reconnecting the FIOS equipment, I then plugged the garage door opener into a different electrical outlet approximately 15 ft. away via an extension cord, and the openers continue to work fine. Fingers crossed, I hope the issue is permanently resolved.

Posted on Aug 08, 2008

SOURCE: Garage Door Openenr Motor Buzz

Look at your manuel find the page that shows the limit access switch. (Unplug your opener.) It isn't really a switch, but the three white plastic screw like parts. The center has a brown wire connected to it, which has a metal piece that is as wide as all three white screws. The outside screws are your limit access stop guides, one for the up control stop guide and the other for the down control stop guide. If the center screw with the metal part gets caught behind on of the stop guides the motor will not engage. Gently move metal piece from behind the stop guide.

Posted on Nov 10, 2008

• 2992 Answers

SOURCE: My Craftsman 53684 keyless won't work with my Craftsman 53930DM.

I've never seen the first set of steps you mention. You always need to press the "learn" button first so the opener will be in the mode to capture the new code. As far as I know it is not necessary to hold the Enter button on the keypad (at least I never have). While the "learn" LED is lit on the opener, just key in the new code and press Enter.

Maybe you should try clearing the receiver first by pressing the "learn" button and holding it until the LED either goes out or starts flashing (depends on model). Then try reprogramming. Maybe the little computer is confused.

Posted on Dec 01, 2008

Moeshere

• 33 Answers

SOURCE: craftsman garage door opener (1/2 hp) - light flashing

most of the time when the lights start flashing on them and they won't work it's something in the way of the eyes that cross the garage at the bottom are something bummed them and there not lining up no more check that first.

Posted on Apr 05, 2009

SOURCE: How do we reset our Craftsman 1/2 HP Part# 41A4315

If the lights in the door sensors do not light you have either a bad logic board or bad wiring to the sensors. Replacing the logic board is usually the cure.

Posted on Jun 05, 2009