Question about BenQ FP731 17" LCD Monitor

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Black out problem

My Benq Fp731 appear blackout on the screen but, there's a led light on. No signal from cpu.


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Try a different known working monitor and hook it up to the computer. Turn on the computer and the monitor and see if you can get video. If you get video then you know the original monitor is bad.

If with the known good working monitor you still don't get video then you know its something either with the video card or the motherboard if you have integrated video.

Posted on Jun 26, 2009


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1 Answer

The led light is green when plugged but nothing shows up on the screen

check your VGA cable or onboard VGA card or try to replace if its not working on any 3d card

Jul 11, 2010 | BenQ FP731 17" LCD Monitor

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Power led flashing on dell E172FPB monitor

The fact this is a LCd or at least listed as a LCD there are a few porbable causes to a faulure,

1. Bent pins
2. Bad signal cable
3. Bad back light (take a flash light point it at the screen if you see the screen change the backlight)

4. Bad signal board (rare)

please do be considerate and check these things in the list please to leace postive feedback and ratings for any expert that tried to help you.

Btw, I’m available to help over the phone in case u need at

May 26, 2010 | BenQ FP731 17" LCD Monitor

1 Answer

Where can I find instructions on replacing the backlight on benq fp731?

jsiwiec, Are you absolutly certain that the "cold-cathode-fluorescent-lamps" need replacing, or if the "switch-mode-power-supply"/"CCFL inverter supply" is not working and is in shutdown mode? CCFL's are not some kind of miniature version of those energy efficient screw-in new style, curlie-Q cfl light bulbs you buy at the local home-center!!! In any case here are some places to checkout first. , , ,, You do know that most times the problem is not the lamps. Did your LCD display have bright, crisp, colorful images displayed on the lcd panel 2- 3 days before black screen happened? How many TOTAL "ON" hours of use on this BenQ FP731 ? When was unit produced? Good luck with repair. Hope info was helpful.

Mar 12, 2010 | BenQ FP731 - 17" LCD Monitor

1 Answer

Goes on for a second then blackout

the powersuply for your TL tube is shutting down.
you need to replace 3 elco electrical condensator in the powersupply 1*22/40V 2*470/25V after this the monitor will work fine

Feb 13, 2010 | BenQ FP731 17" LCD Monitor

1 Answer

My aoc lcd monitor appear full white screen

Most probably failure in the LCD controller IC in the lcd controller board. that no signal was sent out to the lcd driver ic thus you could only see white display on the screen. A replacement of LCD panel might be the solution. regards

May 13, 2009 | BenQ FP731 17" LCD Monitor

1 Answer

Blackout on plug in!

Try your monitor on another computer or another monitor on your PC. This will tell you if the monitor has a problem or your video card (or connection).

Oct 30, 2008 | BenQ FP731 17" LCD Monitor

1 Answer

Can't find video signal

If screen says "Signal cable not connected " all the time till power led switches to Amber chances are monitor is ok and problem is with graphic card or cpu.Connect to Known working CPU and confirm that monitor is the problem.
If same problem persists on another working cpu after changing signal cable,the interface board in the monitor could be defective.

PLease rate solution and provide feedback.

Jun 09, 2008 | BenQ FP731 17" LCD Monitor

1 Answer

Can repairs be made to BenQ FP731 17 inch Flat Screen.

The power and Inverter board has a problem.Check Inverter transistors and the related fuse.

Jan 30, 2008 | BenQ FP731 17" LCD Monitor

6 Answers

BenQ FP731 17" LCD Monitor Problem

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

Nov 14, 2007 | BenQ FP731 17" LCD Monitor

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