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How do you change the frequency of a garage door opener?

my garage door opener had been working great until the other day when none of my car remotes worked, the only opener that worked was the one hardwired to the motor. I thought it was batteries, so I changed them, I also reprogramed them using the learn button, still nothing. Then I noticed that if i was 1 foot from the motor that it actually worked. The number pad on the outside of the garage also doesn't work. I've been told that it sounds like a frequency thing, that someone in the neighborhood, got something wireless that is interfering with the frequency. I was told you can flip some switches on the motor to change the frequency but I haven't been able to locate them yet. Hopefully you can help me, asking a technician to come out and fix it will cost more than buying a new one. I also think its a frequency thing too because, that same day that the openers didn't work my keyless entry on my car also doesn't work unless I'm within a foot from my car. At work my car will work.

Garage Door Openers , Garage Organization & Shelving
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4 Answers from these members:
denver bailey
what to do after unplugging 2nd opener which allowed 1st remote to work normally?
by denver bailey
June 27th, 2014
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