Question about Coleman Powermate Premium Plus 6250W Portable Generator

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Same Problem, diodes fell out of bridge rectifier assembly

4 of the diodes fell out of the bridge rectifier assembly board (0063525) when the solder melted on the board. Had been running the generator for 3 hrs prior to this hooked up to 2 refrigerators.

Local repair shop wanted to replace rotor, stator, and control board for $550+tax, and didn't even take the rear cover bell off, check brushes, etc.

Wonder what is causing the bridge rectifier assembly boards to fail?

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Pulling to many amps,diodes could not handle amps so they failed.unit should have kicked its breaker before the diodes burned out.most units have their own breaker to protect the system.I would replace the control board first see how unit reacts,probly fine,if not the you go to next step.

Posted on Jun 27, 2009

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I had 2 rectifier boards go bad on the same generator. The problem I found was because my generator was not grounded. Since I grounded never had the problem since

Posted on Oct 18, 2010

  • Dan DeMerchant Nov 05, 2011

    How did you perform this grounding exactly? I am having the same issue...diodes heating up and dropping out of the bridge board.

  • Chadcp1 Feb 26, 2014

    By use of a grounding rod hammered into the ground and a wire from the grounding lug on the generator to the grounding rod. I still have not had an issue.



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