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Old 05-24-2014, 11:21 AM   #71
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Can you go into more detail?
They were very sticky and wouldn't snap on. Used a screw driver to bump the center of the post to on. Make sure the little green light is on. Replaced later.
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Old 05-24-2014, 11:35 AM   #72
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I think the next step is removing the gen inverter and taking it to an electrician. Hopefully a $3 part needs to be replaced. Fingers crossed.
Unfortunately the inverter and genset controller are one in the same within the electronic module/control unit. It's all 1 piece, the whole thing needs changed. Onan does not rebuild or repair them.
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Old 05-24-2014, 02:20 PM   #73
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Unfortunately the inverter and genset controller are one in the same within the electronic module/control unit. It's all 1 piece, the whole thing needs changed. Onan does not rebuild or repair them.

The opinion in general with RVers seems to be to replace parts rather than fix them. Which I understand would be easier. But for a $2000 part I can't relate.

4 different shops told me to spend $3000 replacing my coach inverter. An electrician fixed it for $14.

Earlier in this thread someone mentioned that they had an electrician open their Onan Inverter unit and fix it with a cheap part. There are several stories on line where their Onan Inverter was fixed by replacing a burnt out capacitor etc.

I have run a recording studio for years and in this business when a $2000 piece of gear breaks, we have an electrician fix it for $50. There is almost never a case where the equipment can't be fixed.

Being that the Onan inverter works, it just slumps in voltage occasionally I'm betting there's a simple fix.

Fingers crossed!
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Old 05-24-2014, 02:32 PM   #74
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The entire printed circuit board and related components are completely encapsulated within an epoxy based resin to prevent moisture penetration and vibrational issues. The only thing not completely encapsulated is the heat sink, as shown in the picture above. You can't even see or identify any electronic components on the board. :-(
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Old 05-24-2014, 03:01 PM   #75
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Anxious to hear the end result. If it can be done, that would be great news for everyone.

Please keep us posted.

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Old 05-24-2014, 04:02 PM   #76
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Here are a couple of things that might help.
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File Type: pdf 7-9-2011 12-51-05 PM.pdf (600.0 KB, 32 views)
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Old 05-27-2014, 07:06 AM   #77
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The entire printed circuit board and related components are completely encapsulated within an epoxy based resin to prevent moisture penetration and vibrational issues. The only thing not completely encapsulated is the heat sink, as shown in the picture above. You can't even see or identify any electronic components on the board. :-(
If that is true (and it makes sense) then you are screwed and will probably have to just replace. That's how the control board on the hot water heater is made as well.
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Old 06-05-2014, 08:48 PM   #78
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Ok, update!

I've replaced the entire gen inverter with a used unit I found for $500. Now everything works great!

I replaced it myself, the hardest part was getting the front panel of the gen off.

Thanks again!! I've spent all day with the A/C running!!!
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Old 06-05-2014, 09:38 PM   #79
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As Paul Harvey once said, "now you know the rest of the story".

Good job, mate!

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Old 06-06-2014, 01:07 AM   #80
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You have now become our generator expert!!!
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Old 06-07-2014, 03:59 PM   #81
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Ok, update!

I've replaced the entire gen inverter with a used unit I found for $500. Now everything works great!

I replaced it myself, the hardest part was getting the front panel of the gen off.

Thanks again!! I've spent all day with the A/C running!!!
Wow. What an adventure. I like to fix things myself when I can. Fixed my Xantrex inverter recently for less than $20 for 3 relays on the circuit board. They wanted ~$2000 to replace it.

I have a Generac starting problem that is still not resolved after many tries and forum feedback, so I know your grief.

Congratulations.

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Old 06-07-2014, 04:19 PM   #82
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I'm hoping to get the old unit repaired to either have as a backup or sell to get some of the costs covered.
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