Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Garage Door Remote Not Working Consistently

We are having an issue with a Sears Craftsmen Garage door opener where the remote will only work either very close to the house or intermittantly at a distance. We have changed batteries, re-"learned" the remotes by resetting the codes and by trying a different remote. One of the safety sensors is showing a yellow light but it is in line with the other remote. The garage door opener is working fine from the manual button. All of my remotes stopped working at the same time. Even the keyless entry. When I operate the opener with the wall unit all of the openers work for a short time. But when I come back they all fail again. Chamberlin is sending me a logic board and new remotes to replace the 315 with 390mhz equipment. I am cautiously hopeful.

This has made for a tough winter in the MN cold! While I am waiting for the parts I am considering replacing the wire from my wall button with a shielded wire to the opener. Then just grounding the shield to the opener. This would not shield the antenna so I am not sure it would help. I guess I can wait another couple of days for the new equipment to arrive.

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Replacing 315 with 390 OR 390 with 315? I had same problem which went away on its own. Did you buy any new electrical or electronic products just before problem started? I had this with a customer who had electrical interference from within house or a neighbor's satelite dish. You can try turning off breakers one at a time to isolate circuit causing problem .

Posted on Dec 29, 2009


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