Question about BenQ FP72G+ 17" LCD Monitor

2 Answers

BenQ FP72G+ 17" LCD Monitor NO DISPLAY

Thanks so much for your help ! =)

I've found 1 X 2SC5707 ( short circuit )

I've also found 1 X FU9024N (HexFET Power MOSFET) ( short circuit )

are there any other components that needs to be replaced associated with these 2 parts ?

please reply Thanks !

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  • rickyykk Apr 22, 2008

    I've replaced 1 X 2SC5707 (Q808)
    I've also replaced 1 X FU9024N (HexFET Power MOSFET)(Q805)



    re-soldered all the legs of the 4 transformers



    but still not working, NO DISPLAY,



    it's even worst this time, when i shine a torch on the screen, no dim display at all ???

  • Resza May 11, 2010

    Hi i'm from Mizoram, India, and i have a big problem about fu9024n. Can you please tell me where i could find this part in india.

  • Resza May 11, 2010

    Hi i'm from Mizoram, India, and i have a big problem about fu9024n. Can you please tell me where i could find this part in india.

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There is a small thing that make it work again, search on the board to BFXXX fuse usually its a 3 Ahm fuse replace it and it will work.

Posted on Apr 08, 2009

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The way the circuit works is in a mirror format. There are 2 identical circuits that go to each end of the board.

Be sure to check that fuse for continuity, not just for a second like you normally would, but hold it for a good 10 seconds.
Also don't forget while you are in there it's best to repolace it anyway with an actual fuse. A 3A slow blow ceramic is good for this.
Check the 4 transformers as well, if you notice the top circuit is the faulty one, then check the transformers at the top. The transistors are quite powerful, and normally need something to trigger them into failing. Do the same for the bottom circuit.

This monitor came in 2 formats. One with 4 transformers and 4 CCFL tubes, one with 2 transformers that lead to 2 CCFL connectors powering 2 tubes each (3 wires per CCFL)

When you order the 2SC5707's get extras just to be on the safe side. If it goes again, then turn the monitor off immediatly and check them. It should only be 1 failed again, so just see which of the 2 transformers it was primarily attached to and replace it, or both.

Posted on Apr 22, 2008

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I came across a common fault problem in BenQ 17′ LCD Monitor. The problem is have power but no display. Once you has opened the LCD cover, check the pico fuse for open circuit (very common), the push pull transistors C5707 for short circuit and the Buck royer circuit p-channel fet FQU11P06 also for short circuit too. For your information, if you can't get the FQU11p06 you can always use FU9024N as a replacement. Resolder all the high voltage transformer pins and replace the components above and I'm sure you will bring back the life of this BenQ 17′ LCD Monitor.
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Found them


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