I have recently replaced the light socket on my 10 year old Craftsman
139.53674SRT1 Garage Door Opener since the light never turns on.

Not when the beams are broken (safety functions properly) or when the
door opens - either via remote , keypad or wall switch.

Yes - I replaced the light bulbs as well and the wiring is correct -
LOL

Does anyone know what the next part to replace might be ??

Thanks !