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Rich Biebel · 09-02-2012, 04:13 PM

The part number is 300-5047 for that A-1Controller as Onan calls it...

The boards fail regularly and there is NO visual area to see that is faulty.

They generally fail with heat and I let a unit run on my bench for a while with a resistive load bank connected to it....

Once it is good and warm.....I shut it down and let it sit for a while....It heat soaks so to speak. Any unit that has had intermittent shutdown problems will usually start to do it once I put them thru this test. As soon as the unit starts to shutdown......I replace the PC board/control and continue the same test and the units no longer shutdown...

I did 2 units this week.....

One got a new engine and a controller...
One got just a controller......

We called a company we deal with that does PC board testing and repairs....They do a lot of boards for us and also make some lower cost replacements for many common parts. They don't do this one.....

I have changed probably 15-20 of them in the last 5 years....

My prediction is you will be changing yours as well......

09-02-2012, 04:13 PM	#7
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: Onan info The part number is 300-5047 for that A-1Controller as Onan calls it... The boards fail regularly and there is NO visual area to see that is faulty. They generally fail with heat and I let a unit run on my bench for a while with a resistive load bank connected to it.... Once it is good and warm.....I shut it down and let it sit for a while....It heat soaks so to speak. Any unit that has had intermittent shutdown problems will usually start to do it once I put them thru this test. As soon as the unit starts to shutdown......I replace the PC board/control and continue the same test and the units no longer shutdown... I did 2 units this week..... One got a new engine and a controller... One got just a controller...... We called a company we deal with that does PC board testing and repairs....They do a lot of boards for us and also make some lower cost replacements for many common parts. They don't do this one..... I have changed probably 15-20 of them in the last 5 years.... My prediction is you will be changing yours as well...... __________________ Rich Biebel S/C 1479 Stock 147R Last edited by Rich Biebel; 09-02-2012 at 04:16 PM.