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Old 02-28-2011, 02:22 PM   #1
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Generator Issues

I've posted several time in the past about my generator now working right and I've always seemed to get it working again. Well, this time I'm stumped.

I've got an Onan 7500 LP generator with 90 hours on it. It's mounted in the front of my DP. It has a starting switch in the generator itself as well as a remote switch on the dash.

At this point neither switch does anything when you press them. For a while it was intermittent. I'd drive down the road and every once in a while I would be able to start the generator. It would fire up healthy and happy. I'd shut it off and try and start it later and nothing. Now, I'm at the point where it won't start at all. You press either of the starting switches and nothing happens. No click, no lights, no cranking, no buzz, nothing. It's like the buttons aren't even connected to anything. Batteries are fully charged (starting Bat = 13.6, house bat =12.2). Yesterday I drove it around, wiggled wires, checked continuity and voltage everywhere I knew how. Still nothing.

(it makes no difference which position the LP detector switch is in - tried that).

Anyone have any ideas?

Brian
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Old 03-02-2011, 09:18 AM   #2
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For the record. I fixed it. The circuit board that controlls the starting circuit was shorting to the enclosure it was mounted it. Looks like over time some of the insulation on the wires wore down. I taped 'em up, shoved the board back into the enclosure and BINGO! I now have a running generator.

Brian
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Old 03-02-2011, 12:03 PM   #3
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See... you always seem to fix it
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Old 03-02-2011, 12:13 PM   #4
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Glad we could help! I was going to guess that you may have a bad ground but I would have been wrong. Glad you found the source of the problem. It helps if any of us encounter this type of problem we'll have another thing to check.
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Old 05-01-2011, 11:39 AM   #5
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Is the circuit board enclosure on the generator? (just for future ref on where to look). Thanks
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