Craftsman 1/2 HP Garage Door Openers suddenly don't work
Hi - I have two Craftsman 1/2 HP GDOs that quit taking input from the remotes. One is model number 139.53629SRT and the other is 139.53637SRT and they are both exhibiting the same symptoms.
The remotes will work sometimes but not most of the time. The indicator light on the back of both flashes quickly and constantly.
I've tried erasing the the remote codes as per the instructions but that doesn't have any affect and the indicator light just keeps flashing while I'm trying.
Any ideas on what would cause this and what I should do to fix it?
Thanks in advance.