Moderator Post (s) for this thread: >Garage door openerbyBillhart on 11/01/2007
I have a model 139.53970SRT Craftsman GDO. I replaced the drive gear in it and now it won't operate correctly. The small green light in the back blinks 5 times and the opener only moves about 8" in each direction. The safety system is operating correctly (lights).
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