Genie 880 Garage Door Opener won't open unless micro switches disabled.



Howdy All !

I have a Genie 880 that won't open unless the two switches on the
screw drive housing are disabled by disconnecting the wires. When it
does open after disabling the switches, the screw drive housing
vibrates and the motor acts like it is straining to open the door (can
smell overheating of motor). The door opens manualy with one hand but
does take a little effort.

Any ideas?



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