Powermate series 54 4000 W generator puts out electircity for about 2 ro 3 minutes then no electricity. Starts and runs fine; puts out electricity for about 2 to 3 minutes then no electricity. let cool, restart , get power for a minute. voltage on field(brush terminals) goes to zero when output stops. repeatable. brushes look ok. If cool maybe get a minute or two longer. Capacitor and diodes checked OK ( when cool).

asked by

on

23 Dec, 2017

  • 67%
    Solved this issue
  • 86min
    Time to fix
  • 61%
    Recommend to DIY
Need a faster answer?
Hello Tombr,
You should buy a can of "freeze spray" and while the unit is running, and the output is at zero, spray the diodes to cool them off 1 by 1. The 1 that you last sprayed when the power returns is most likely the problem part, and needs to be replaced. You could replace all 4 diodes at once to be sure the problem doesn't return. The caps could be at fault and you can spray them also, but they most likely won't cause the issue you are having!
Good Luck!
Rich Lilja
SHARE YOUR EXPERIENCE
  • Were you able to resolve it?
    Yes No
    Awesome !
    Ok
  • How long did it take to fix?
    Good to know
  • Is it better to DIY or Repair?
    DIY Repair
    Great
    Got it
Instant Repair Help
over the Phone or Video