Garage door opener logic board

keithevJune 19, 2010

I have a Craftsman door opener and I think that lightening fried my logic board. Any Idea how you open it up to reach the logic board?

Also the green light on my receiving sensor is out. Could this just be beause of the logic board or do i need to replace the sensors?

Thank you for reporting this comment. Undo

The light out on the sensor sure could be part of your logic board problem. To get to the logic board you need to remove the cover from the motor unit. There are 2 screws on each side. Check the logic board from burnt or missing traces on the printed circuit especially around the small transformer. Be sure to note the location of all the white wires on the end of the unit. They all look the same but are not.

    Bookmark   June 21, 2010 at 4:35PM
Thank you for reporting this comment. Undo

Even if you don't find any visible indicators of a lightning strike, the logic board may still be fried from the strike. Not all lightning damage is visible.

I had lightning take out a logic board, and it still looked brand new.

    Bookmark   June 22, 2010 at 7:35AM
Thank you for reporting this comment. Undo

hi. i have a marantec m-4700 and since a recent power outage, now when the door closes and hits the ground, it reverses. i reset the travel and force but still have an issue. can someone plz confirm if this sounds like it is the logic board?

    Bookmark   June 23, 2010 at 3:52PM
Thank you for reporting this comment. Undo

Thanks for the help on getting to the logic board. When I called Sears Parts, they said that it looked like all I had to do was pull the back end of the unit down and back. I could tell that was wrong and I really didn't feel comfortable standing on a ladder and trying to force the issue. Once I removed the screws (on my unit they are in the front next to the lightbulbs) the cover came off easily and so did the logic board. The replacement board (an identical cheaper Liftmaster board)solved the problem.

    Bookmark   June 27, 2010 at 4:19PM
Sign Up to comment
More Discussions
craftsman 1/2 hp battery key pad ok / remotes &...
Garage Door Exterior Lighting Help Please
Hello members, On the exterior, do you prefer lighting...
Craftsman Garage Opener Clicks only and LED blinking 5 times
My 1/2 HP Model 139.53641SRT opener clicks to all my...
Garage door won't open - even manually
Our garage door won�t open - the motor works,...
Garage Door Torsion Spring
Have you noticed that local HomeDepot/Lowes do not...
Sponsored Products
NewAge Products Pro Series Grey Locker Cabinet
PlayStar Playsets Commercial Grade Trapeze Bar - KT 75381
$27.99 | Hayneedle
Excel 26-inch Five Ball Bearing Slide Drawers Top Tool Chest
Yard Tool Corner Storage Rack
$14.99 | zulily
Espresso Chevron Cumulus Runner
$89.99 | zulily
Fanmats Military 60 x 96 in. Utility Mat - 6973
$134.99 | Hayneedle
Fanimation Cancun 52 in. Outdoor Ceiling Fan - FP8012OB
$274.95 | Hayneedle
Talking Galaxy Planetarium with Night Light - EDU-37364
$58.99 | Hayneedle
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™