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Question About Craftsman Garage Door Opener 139.53978SRT
I have a model with a back up battery. Lost manua...

I have a model with a back up battery. Lost manual and do not know how to replace it. Every one minute buzz is driving us crazy. Help Lynne Weber, Boynton Beach Fl. Approximately 3 to 4 yrs. old. 561 369 2105 or weberedward66@hotmail.com

Asked by Lynne on 08/12/2014 1  Answer

ManualsOnline posted an answer 10 years, 3 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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