Craftsman 1/2HP Garage Door Opener won't Open
I have a Craftsman 1/2 hp garage door opener. Its 12 yrs old and worked fine until yesterday. I opened it as usual but it wouldn't close automatically. I have the manual and have tried everything obvious. both reverse sensors are lit, when I hit either remote button the lights comes on but nothing happens, motor doesn't engage, or come on, etc. We have 2 garage doors with the same unit but i had to replace the other one about 2 yrs ago, maybe it's time to replace this one as well? Any suggestions greatly appreciated.