Hey Lugbolt, he doesn't want to take it to a dealer (he is probably concerned about cost), but doesn't want to listen to anyone who might be able to shed some light on what he described as not working.
He could go on line to one of those links who will chat back and forth and make similar suggestions and get it fixed for an easy solution of $10-$15. But that also takes patience and he know what it isn't!
I think it would be fitting if he took it to a dealer and the tech discovered the wires he (or someone) disconnected from the operator presence switch and scabbed back together came loose (as has been suggested here)....and his bill is north of $75.
I live next door to a genius. He told me so. By him, has an IQ of 164 and a double major (in something).
Last week my wife told him his propane tank was leaking because she could smell it. No, he responded that's a dead animal. We've been smelling it for a couple of weeks. A couple of days later she texted him telling him she could smell it when she went over to let their dog out. She even went over by the tank and could hear a hissing sound. She told him to take some soapy water and spray the lines. He finally did. And as he sprayed each connection he declared "That's not leaking." She said, "Spray here". Big bubbles burst up. He grabbed his phone and called the co. who installed his emergency power setup to get out and fix it.
He couldn't, or didn't, understand he could get two wrenches and fix it in a moment.
Naw, sometimes you got to let those folks fend for themselves. Hopefully, it eventually comes to them!