Question about BenQ FP731 17" LCD Monitor

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BenQ FP731 17" LCD Monitor Problem

My BenQ monitor has a black screen. The power light goes on, but nothing else!

Posted by dbechaz on

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  • billy24 Nov 15, 2007

    The screen of my monitor BENQ FP731/FP737s LCD is always blanck even if the light is on

  • indarios Nov 16, 2007

    Im having the same issues, no picture but the light next to the power button will show its status still. If its connected to a computer it shows the green light but when its not connected to a computer its orange. Also for the past month i noticed its making a very high pitch squeal when its on power saving mode (when the orange light is on)

  • Anonymous Nov 30, 2007

    Exactly the same thing for me.

  • Anonymous Dec 04, 2007

    i was in the computer searching then my screen turn to black everything disappear, then i touch the mouse it never went back so i turn off my computer then i put it on back but still my monitor screen is black

  • pkcanada Dec 26, 2007

    I have the same problem, monitor light is on but no display, the amazing thing is my monitor just passed the 3 year warranty and display is gone.

  • Anonymous Jan 14, 2008

    same situation... 2 months past 3-yr warranty... 2nd BenQ... same model... slow to display... no doubt on its way out too... if you are handy try: http://www.lcdrepair.us/index.html they have videos which clearly show how to replace the inverter-power card... no soldering required.

  • Anonymous Apr 14, 2008

    lol, it seems BenQ really tried to create this situation. My warranty just expired two months ago.

  • Ugurhan Akturk
    Ugurhan Akturk Apr 30, 2008

    If I let the monitor on no problem. When I turn the computer off turn to booth on screen comes on momentarily and turns off I had to turn monitor on and off probably more than ten times to get the monitor to stay on. Once it is on it is ok.

  • Anonymous Sep 06, 2008

    light is on but the screen is black. [email protected]



    Benq FP731 Serie Q7T3 built in 2005,3 years ago.



  • gordon johnson Oct 07, 2008

    I had the same problem//checked all 4 c5707 good,then checked a few other parts before i found the pf751 open ,replaced it,not with 3amp fuse, but a 2.5amp fuse found on old crt comp.board.working ok now

  • aricappa Nov 14, 2008

    IF I SWITCH ON THE MONITOR WHILE THE PC IS ON OR OFF THE GREEN LIGHT QUICKLY FLASHES....... ALWAYS!

    THANK YOU

    aricappa

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6 Answers

Anonymous

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Had the compete dark screen problem. Green/amber power light was coming on and off as expected but no image would appear on the screen.

Found PF751 to be open.

Thnaks for the help people.

Posted on Oct 08, 2008

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Anonymous

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Hi, after changing the transistors, you got too check the four transformers legs for cold joints. If not the new trans: blow out again.
let me know.

Posted on Sep 19, 2008

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Anonymous

I tested this camera for a client. I didn’t have the light running for more than 15 minutes. The battery lasted approximately 6 hours before recharging. The LCD, however, had a few dead pixels - never saw this before. Tried returning for exchange and had to put up quite a fight. Anyone else seen this? http://www.batteryfast.com

Posted on May 28, 2008

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Spot on! I has a FP737s-D. Q758 had blown. On top it looked like a black texta mark, but on closer inspection that transistor had a mico hole where the plastic had blown out. Underneath, was a dry joint. Benq are nice, in that the shade of green was darker, indicating heat. As Both transistors are a pair, replaced both. Lightening strike did the damage.

Posted on May 11, 2008

Alexander juico

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Its a problem with the inverter. check the 4 transistors, C5707 near the connectors for the backlight. If none are defective, look for the PF751 FUSE. It sure to be busted.You can replace that with another 3A fuse. Remember, you should only replace the fuse if you are certain there are no busted transistors in the inverter board. Otherwise, you now have a refurbished Benq Monitor

Posted on Jan 07, 2008

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Connect it to another device, if you get the same result the backlight is bad! These can be replaced, but can be costly!

Posted on Nov 26, 2007

  • Anonymous Nov 29, 2007

    Well I am sorry this did not help you! Inappropriate! Wow I need to look up the definition!

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