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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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Vyger

7 years ago

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

Which component is most likely fried?

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/

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.


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

L