Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC
Posted by Anonymous on
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Posted on Jan 02, 2017
there is a 2amp fuse inside the opener. go get one and replace it. please look at what kind of fuse it is it's the one that has glass all around and about 1 inch long. to replace this unplug the unit then take the 4 screws out take cover off and you will see the fuse inside
Posted on Jun 20, 2009
THEY CAN LOSE PROGRAMING IN ELECTRICAL STORMS OR POWER SURGES. UNPLUG THE UNIT TO RESET THE CIRCUIT BOARD.
REPROGRAM ALL REMOTES.
IF YOU STILL GET NO RESPONSE YOU PROBABLY HAVE A FRIED BOARD.
YOU CAN GET TROUBLESHOOTING INFO IN THE OWNERSMANUAL.
IF NOTHING ELSE WORKS CALL A LOCAL GARAGE DOOR REPAIR COMPANY. IF YOU REMOVE THE UNIT AND TAKE IT TO THEM MOST WILL DO FREE DIAGNOSTICS IN HOPE OF SELLING YOU THE REPAIR/PARTS/REPLACEMENT - BE SURE TO ASK IF THERE IS A CHARGE
HOPE THIS HELPS
Posted on May 28, 2010
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