Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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We have 3 Liftmaster 3265-267 1/2hp garage doors that will not respond to remotes (or car buttons) or the wall remote. They will only work using the wall buttons. We just had our 2nd visit from the garage door folks and they cannot get them to work. Logic boards check out. We are supposedly getting some type of interference. We have no wi-fi, no new cordless phones, etc. Any suggestions? URSpider

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  • ssholman Oct 09, 2009

    Problem solved! Clock/radio in an upstairs bedroom was the culprit! Once it was unplugged all doors now work! Yeah!

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I have a Liftmaster Chamberlain 3265-267. Today I opened the garage door using the wall door control. Now there is no power to any part of the system. The wall control is dead (not even that faint light for finding it in the dark, doesn't close or open the door), none of the remotes work either. For the past month or so, we've had trouble with the lightbulb in the door opener. The bulb was good, but it would short out after a day or so. Now the whole thing is dead. Could the short we were seeing with the bulb be related to this larger problem that we now have?

Posted on Feb 18, 2012

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The solution makes no sense. What kind of clock/radio you have in your bedroom? Do you ever wonder why your clock/radio transmits such powerful microwave capable of disabling your remote?

Posted on Sep 26, 2010

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Turn off circuits in house, one by one , and try. What about neighbors close by. Satellite dishes?

Posted on Dec 30, 2009

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1 Answer

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