Typically, if the motor starts up and the garage door doesn't move, the Allen screw on the flywheel (connected to the motor drive shaft) has backed itself out and the flywheel isn't turning. Also, the flywheel may have slid down the motor shaft and the drive belt has come off the flywheel. If you have Allen wrenches, this is easy to fix.
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Originally Posted by TomPerry
Last week I had the same problem! Door light would come on, but the door would not open. The motor would hum for about 15 seconds and stop. I called Ryan and he returned my call in about 10 minutes and he told me he would be at my house in about 20 - 25 minutes. 20 minutes later he arrived and in less than 5 minutes the garage door worked again. Best repair service I've gotten in 48 years of home ownership!!!! CALL RYAN!
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