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How to fix CRT monitor that has been powered with reverse voltage? Answered

I have a small Homeland Security system monitor (model number 01875) that I accidentally powered with backwards polarity. Now it doesn't turn on. How can I fix it?

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user
Vyger (author)2011-03-28

Look for a fuse. A lot of CRT's had them soldered into the boards.

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user
Ethanal (author)2011-03-27

Which component is most likely fried?

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orksecurity (author)Ethanal2011-03-27

Impossible to say without seeing the schematic, and even then I'm far enough away from doing circuit design that I'd hesitate to guess. It may be multiple, of course/

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user
orksecurity (author)2011-03-27

Most electronics really doesn't like having the polarity reversed, and often isn't designed to protect itself against that. You _may_ get lucky, but you've probably cooked it.

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lemonie (author)2011-03-27


Hmm, open it up and tell us if anything looks "fried" inside.

L

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