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I have a liftmaster model 8500 garage door opener that

Customer Question
worked perfectly for two years...
I have a liftmaster model 8500 garage door opener that worked perfectly for two years. Now every so often the door won't open or close with either car or house remote. When this happens the garage door opener lights blink and a beeping alarm goes off. I have changed the batteries in both remotes and it still happens. I have also reprogramed both remotes several times.
Submitted: 1 year ago.Category: Home Improvement
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Answered in 13 minutes by:
12/3/2015
Home Improvement Expert: AssuredElectrical, Home Specialist replied 1 year ago
AssuredElectrical
AssuredElectrical, Home Specialist
Category: Home Improvement
Satisfied Customers: 4,241
Experience: 35 years home improvement
Verified

Welcome. My name is ***** ***** would be glad to assist.

Please look at the small LED on the opener unit and see if it has a flash pattern.

It will flash a certain number of times, then pause and then flash again--repeating the sequence when there is trouble.

Count the flashes

Let me know and we can continue,

Thanks

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Customer reply replied 1 year ago
I reprogramed the remotes yesterday like I have been doing in the past. Yesterday and today it has been working fine. But for how long?? It malfunctions sporadically.
Home Improvement Expert: AssuredElectrical, Home Specialist replied 1 year ago

Ok, I understand.

Next time it acts up, please do the following and we can determine what the issue is on the unit.

CLICK HERE and go to Page 30, then you can find the matching problem by the LED flashes.

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AssuredElectrical
AssuredElectrical
AssuredElectrical, Home Specialist
Category: Home Improvement
Satisfied Customers: 4,241
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Experience: 35 years home improvement

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