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[Non-DoD Source] Yak52 GEN FAULT light

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mark.bitterlich(at)navy.m
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Posted: Mon Apr 11, 2016 10:28 am Post subject: [Non-DoD Source] Yak52 GEN FAULT light

Yes,  this is a classic case of your batteries being weak.  Replace them.   If you keep running the airplane in this condition you stand a strong chance of ruining the DMR-200 relay, if you have not already.



To check to see if it is still working at all, turn on your master with the engine not running and observe that the ammeter is close to zero.  If it is, you've a lucky man.



The DMR-200 requires reverse current to disconnect the generator at idle (as it is supposed to do).   If your batteries are too weak to provide this current, the relay stays energized and you discharge back into the generator and things start getting hot quickly.



Mark

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