Mep 002a voltage

Triple Jim said:

Read my last post please. You're on the wrong transformer. You're measuring "1C" and "2C" of CT1 when you need to be on "C1" and "C2" of CVT1.

Note that the diagram label "front" is away from you when you're looking in the enclosure. C1, X2, and C1 are nearest CT1.

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Triple Jim said:

I just went out to my MEP-003A and looked. You're on CT1. CVT1 is the one that's away from where you're sitting when you look at the pair. CT1 should have "CT1" molded into the housing facing you. That's the wrong one.

Put those wires back on and find C1 and C2 on CVT1. I found a diagram someone drew that shows the terminals. Locate screw terminals C1 and C2 and verify you have the correct terminals by finding the markings near them, molded into the plastic. Remove the wire from one of them and measure the resistance between those two screw terminals on the transformer. You may have to remove the wires from both of the terminals so you can see the "C1" and "C2" molded into the plastic, therefore indicating you have the correct ones.

View attachment 799448

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RJM27 said:

Alleluia!!!!

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Triple Jim said:

OK, so the control winding of CVT1 looks good. Everything is pointing to the regulator board. You did say it's an intermittent problem, which means you might have just caught CVT1 when it was behaving. Therefore it's not a 100% certainty unless you swap it with the one in your other generator, but that's what it looks like.

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Triple Jim said:

Are you hoping to diagnose and repair your board, or are you looking for a new one?

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Triple Jim said:

I'm keeping an eye on the thread!

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Triple Jim said:

I'm keeping an eye on the thread!

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RJM27 said:

It’s back!!!
many many many THANKS

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