Craftsman GDO Remotes
Remotes will not work.
Craftsman Security Plus garage door opener 139.53664SRT2
Keyless entry new battery. Two remotes 139.53681B new batteries.
Original 41A5021-2C logic board assembly replaced with 41A5021-2G as per Sears replacement parts site and confirmed via email. No sign of burning or scorching on any part of the door opener. Have not replaced capacitor - shows no sign of scorching but one lug had a little corrosion which I removed.
Press and hold SRT button to erase codes.
Press and hold remote button, press orange receiver button - opener light does not flash.
Door closed, press a remote button, and press and hold wall light button, and press and hold door control push button - opener light does not flash panel light blinks 3 times.
Door closed, press and hold remote button, press and hold wall light button and press and hold wall lock button - opener light flashes twice.