One of the sensor contact pin is broke and it does not sense all time. Garage door open half way and do not complete close. Can by pass the sensors ? This is a 1/4 hp chain drive unit. Noe I see you can not bye less than 1/2 hp and tell me substitute eye sensor fit to my 1/4 hp garage door opener chain drive unit. It is a sears Craftsman brand and tell me about the part # I need to purchase.
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