One thing is it MAY be the TM. I'm going to get another Jumper and hook it from 1 to 3 and try that. It'll come on with 24 volts. Helps narrow down the problems. I just wish I'd have gone ahead and gotten a new TM when I got this one. Paid $700 for it used and I've put $500 in it one time and $300 in it another. I just couldn't afford $1300 when I got it. I got what I could afford at the time.