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Old 08-17-2018, 12:59 PM
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mr_rye89 mr_rye89 is offline
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Join Date: Jul 2015
Location: The Luna's
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I'm betting the switch mode power supply in it is dead. Anything toasted on that board?

Strangely enough I had some kind of power surge and it rek'd my Monster Power Center and killed the power supply in my JVC DLA-RS20 (LCoS) projector

I didn't have anything toasty/burned on that PSU, solderable fuses checked out ok, the big semiconductors checked out okay, as did the transformers. Hell it even has high voltage around most of the board, but NADA on the secondary/low volt outputs. I'm gonna fart around with the optoisolators tonight and see if that does anything.

TL;DR

If none of the big resistors/caps/semiconductors/fuses are toast, it might be the control/PWM circuits or the optoisolators that couple the primary and secondary sides of the circuit.

But take it with a grain of salt, I'm just barely learning about SMPS's and how to fix 'em
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