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Onan's revenge [message #281792]

Fri, 10 July 2015 00:46

Bullitthead

Messages: 1411
Registered: November 2013

Karma:

Senior Member

Ran just fine all day powering the A/C. Shut it down when I got home, a week later crank but no start and the board and 2 diodes are burned. The K1 relay is also not connecting power to the "I" terminal, which is necessary to turn on the K3 relay.
http://www.gmcmhphotos.com/photos/onan/p58386-onan.html

I'll fix this with a wire, but I would like to know the root cause of all the damage.
http://www.gmcmhphotos.com/photos/onan/p58389-onan.html

This diode (CR1) is what power must flow through from K1 to energize K3 to turn on the ignition and fuel pump. If I remove the relay cover and push the relay to make contact, Onan will start and keep the relay pulled in by itself, just like it is supposed to do normally.
http://www.gmcmhphotos.com/photos/onan/p58392-onan.html

Notice the other burned diode---CR7
http://www.gmcmhphotos.com/photos/onan/p58395-onan.html

Anybody recognize whether this is the original board or not? Looks just like the one in the manual. I plan to repair it.
http://www.gmcmhphotos.com/photos/onan/p58398-onan.html

It worked when I parked it... Laughing

Terry Kelpien ASE Master Technician 73 Glacier 260 Smithfield, Va.

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[Message index]

		Onan's revenge By: Bullitthead on Fri, 10 July 2015 00:46
		Re: [GMCnet] Onan's revenge By: Jim Miller on Fri, 10 July 2015 05:54
		Re: [GMCnet] Onan's revenge By: Mr ERFisher on Fri, 10 July 2015 08:21
		Re: [GMCnet] Onan's revenge By: Bullitthead on Fri, 10 July 2015 11:06
		Re: [GMCnet] Onan's revenge By: James Hupy on Fri, 10 July 2015 11:19
		Re: [GMCnet] Onan's revenge By: Matt Colie on Sat, 11 July 2015 09:49
		Re: [GMCnet] Onan's revenge By: jimk on Sat, 11 July 2015 18:52
		Re: [GMCnet] Onan's revenge By: Ken Burton on Sat, 11 July 2015 21:20
		Re: [GMCnet] Onan's revenge By: Jim Miller on Mon, 13 July 2015 18:35
		Re: [GMCnet] Onan's revenge By: Bullitthead on Sun, 12 July 2015 02:35
		Re: [GMCnet] Onan's revenge By: Bullitthead on Sun, 12 July 2015 02:44
		Re: [GMCnet] Onan's revenge By: Bullitthead on Tue, 21 July 2015 13:45
		Re: Onan's revenge By: JohnL455 on Fri, 10 July 2015 09:08
		Re: [GMCnet] Onan's revenge By: Jim Miller on Mon, 13 July 2015 18:23
		Re: Onan's revenge By: JohnL455 on Mon, 13 July 2015 19:23

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