Community Forums

ALAG321 · 08-28-2008, 04:56 AM

I have an Onan 6500 generator and it keeps burning up electronics inside the generator. I am on my 4th voltage regulator and my 2nd control board. The local Onan dealer is at a loss as to what could be causing this problem. Anyone else experience this problem?

ALAG321 · 08-28-2008, 04:56 AM

I have an Onan 6500 generator and it keeps burning up electronics inside the generator. I am on my 4th voltage regulator and my 2nd control board. The local Onan dealer is at a loss as to what could be causing this problem. Anyone else experience this problem?

RV Wizard · 08-28-2008, 11:27 PM

How many hours do you have on the generator and does it get used every month? It could be bad slip rings and/or brushes.

Darryl · 08-30-2008, 10:58 AM

I went through the same thing with my Onan 6500 back in the spring. I'm on my third voltage regulator. The resistance on my slip rings were fine, although I went ahead and cleaned them anyway. I was not using the Onan brand regulator, as it is much more expensive than the aftermarket brand from Advanced Service and Parts. It turned out that they had some bad batchs that were manufactured between June 2007 and September 2007. The last one was I received was manufactured in Oct I believe and I've not had any more trouble with it.

Here is the URL for the company:
http://www.partsfortechs.com/asapcart/720305-voltage-re...-regulators-p-2.html

ALAG321 · 09-01-2008, 09:37 AM

The generator has just under 400 hours on it. I do run it every month for about an hour. We have been doing a lot of dry camping where the generator runs for the weekend, and the location is very dusty. Could this have anything to do with it?

Darryl · 09-03-2008, 04:18 AM

This is just my opinion, but I'd say not likely. You need to get a technician (or you can look up the info on the web and do it yourself) to check the resistance on a couple of things. The slip rings are one of them. I don't remember the values, but they are available on the web somewhere. That's where I found them. If the resistance is out of spec, it can burn up the regulator.

ALAG321 · 09-05-2008, 12:45 PM

Well, the Onan dealer just called back. They sent the voltage regulator out to "have it checked". They tell me that "the part of the regulator that burned up" indicates a problem with the rotor. They are not willing to help out with the fact that I already have already given them 1000.00 toward fixing this problem, but, of course, want me to bring it back so they can "take a look at the rotor". Sounds line a line of BS to me! If they haven't figured it out yet, I don't think they will. I'll be looking for another generator repair shop, I guess.