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I tested the diodes on both of my diode boards with my Fluke. *All diodes measured about .45V and infinity (after the caps charged from my meter) * Actually I found one of my diodes shorted.

Not fixing it. It's one of several dead inverters I have laying around here. I use it for pictures only. The charring is from a trace that vaporized. It was the Load signal from the inverter going to the Governor Controller module. IC's are ON Semiconductor.

Could be why so many of the inverters fail.

Peter, Here are front and back pics of the same part on the top board. Ref Des on the PCB for it is C19 No marking on the back

Peter, No inrush limiter. DC goes from diode bridge directly to the electrolytics. Only other parts on the assembly besides the two disc caps are a couple of caps between the power transistors and two bleeder resisters. I suspect it doesn't need a limiter since the PMA voltage rises as the...

I'll tear my inverter down more and see if there is an inrush limiter.

Here's a picture of one.

Interesting. I've torn apart dead inverters and never saw one with a toasted disc capacitor. The 12 semiconductors on the left and right are diodes. They comprise the AC to DC rectification of the 3 phase AC power from the PMA.

Correct

831 haters :ROFLMAO: When they work they are great. Perfect 60 Hz output frequency & AC power plus stable VAC output. No droop like 802's and 803's. When the inverter fails it sometimes burns out one or more of the fuses. Check each of these 8 fuses by the PMA power input connectors to be...

Part 2... Remove this bolt and spacer. (mine is missing it) Remove the screws attaching the fan and bottom panel. There are spacers where the bolt passes thru the fan housing. Pull the fan and base panel away. The bracket shown in the pic attached to the base panel would be loose by...

Here is how to get the jig saw puzzle apart :) This will be two posts since only 10 pictures allowed per post. Take the top and two large side panels off. Unplug the three black connectors Remove the three nuts and bolts attaching the control board to the frame (mine is missing the middle...

Yes, It is a bit confusing on how to get the unit apart to service those capacitors. I'll shoot some pictures for you on the step by step to get it apart and post them up here. I've disassembled them numerous times!

Here's a picture of one that burst.

Check the tops of the 12 large black electrolytic caps to see if any of them split their tops open. They have stamped lines on the tops that create a burst point in the case.