Motor runs but no movement

by Pat lynam
(Mississauga Ontario )

How can I tell what is wrong with the garage door opener when the motor runs but there is no movement with the chain and I can't tell if the chain is off the gear or not



You will have to remove the cover from beneath the chain drive gears to see what is happening. If the gears are stripped, you will see a lot of small white plastic particles in the bottom cover.

You should also be able to see whether the chain has slipped off the gears (It is usually because the gears are worn that the chain slips off).

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