Question about Dell E172FP 17" LCD Flat Panel Monitor

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Back light goes out after start up - Dell E172FP 17" LCD Flat Panel Monitor

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  • se2000 May 11, 2010

    Which e172fp do you have. There is another letter.

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You have BenQ syndrome.
Sounds strange I know, but the power supply in your monitor is a BenQ manufactured part.
The problem is in the inverter section of the power/inverter board.
There are 4 small transistors (marked C5707) 1 or possibly 2 of these will have shorted out. Using a multimeter find the shorted one, and replace both of that pair, even if only one is shorted out.
There could also be other underlying issues as well that caused the transistor to fail in the first place.

Posted on Apr 08, 2008

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Posted on Jan 02, 2017

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