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Dell 20" monitor doesn't power up

I have a 20" Dell wide screen LCD model 2007WFP. It won't power up and it died after I plugged in a 6v class 2 transformer to the speaker power jack on the back of the monitor. I didn't realize at the time that the monitor was outputing 12vdc to the class 2 transformer that was NOT yet plugged into the wall. I saw the green power light on the monitor flickering and after a few seconds it went completely off and the screen went black. I then realized that I shouldn't have sourced voltage to the monitor that it was outputing the source for the speakers. I unplugged the transformer dc portion from the monitor and noticed it was warm.

What can I do and how can i find the problem with the circuit board. I don't have any warranty. Will a place like Best Buy be able to fix this?

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I suspect Best Buy will most likely replace the monitor's entire power circuit. It's possible that you shorted out a fuse, the input transformer, or some other component in the monitor's power supply. The only way to tell for sure is to disassemble the monitor and check the circuitry visually and with a meter. This job is best left to a qualified technician.

Posted on Jun 15, 2008

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