I have a Craftsman 1/2 HP Garage Door opener. Both the remotes and wireless key pad stopped working at the same time. I replaced all the batteries with no luck. I also unplugged it overnight but still no luck. Wired wall control still operates the door correctly. Also, the door sensors used to activate the lights on the unit when I walked in and out of the door, but no longer do so. Can this be fixed or is it time for a new one. Frustrated b/c its only 4 years old!
The remote and the keypad work through a signal sent to the receiver while the wall console, as you said it's wired directly to the opener, so it's likely that the receiver is shot. I'd try reprogramming the remote to just rule out the chance that all code wasn't erased first. (Press the learn button on the back of the operator head, stand back 5 feet and within 30 seconds slowly press the remote button a few times to see if it operates the opener). If this doesn't work, you can install an external LiftMaster universal receiver with the correct frequency and you should be good.
If there's a purple antenna hanging off the head, this is a 315 freq, use a 356LM, if black it's a 390 freq, use a 635LM receiver.
Then you'll have to reprogram your remote and keypad to the receiver.
Since there's also the issue with the light, there's also a possibility the circuit board got fried. Did you have any storms lately?
If your sysem has any type of standby battery replace it if you haven't. They are only really good for threeto four years at most.
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