200 amp alternator- No output, questions.

Ajax MD said:

Question:

Is there a compatible 28v "only" regulator that is less expensive?
I have the TH400 which is not electronically controlled. I have no use for the 12v output.

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I do not think so.

You guys should see the ebay ads-
Kuwait, Egypt, Poland. I think these are parts scavenged from trucks abandoned in Afghanistan.

Ajax MD said:

You guys should see the ebay ads-
Kuwait, Egypt, Poland. I think these are parts scavenged from trucks abandoned in Afghanistan.

Click to expand...

Maybe, maybe not most of those locations have US basses and all those countries use the HMMWV

@Mogman true, I hadn't considered that.

I found a US source of new regulators that even offers a warranty, so I ordered one.

Ok, just to close the loop on this the problem seems remedied by a new voltage regulator.

- With the old regulator, I got no output except perhaps every 5 starts at random.
- With the new regulator, I get output every time and the output is in the "sweet spot" on the meter where the old one was a little low.

The dead regulator was made in 2004, so I guess 21 years of service isn't something to complain about.
I appreciate @TOBASH 's help working through the PCB.