Question about BenQ FP737S-D 17" LCD Monitor

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Benq monitor only displays the benq for a split second. you said something about a capacitor. the only trouble im getting is getting inside to check it out. and could it be the lamp?

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  • auplpnb05 Nov 13, 2008

    Hi,

    I have the same problem. The transistors have been checked - ok. The transformers have been re-soldered. Still have the same problem.

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Most of the time problem is Invertor transistors being defective and Inverter transformer dry solder.
But you must be technically able with soldering skills and be able to test transistors using a multimeter.
Samir

Posted on Sep 01, 2008

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Display for a few second


That is because your monitor has faulty capacitors. Capacitors in your monitor have a job to hold down power as it comes from the source long enough for a proper display. The only way to get around this problem is to open up the monitor (You can get a computer technician to do this for you if you can not do it by yourself). Or you can get a sharp - flat object and start opening (splitting) the two covers apart from the bottom of the monitor. You will notice finger-like structures that are holding the covers together. Make sure you do not break any of those. When you open it up, then check the circuit board where the power supply cable is connected. Check for any bulged or leaking capacitors. When a capacitor is bulged or leaking, it only holds power for at least 2 to 8 seconds then looses it. Buy the same type of capacitors and replace the faulty ones. Make sure you note the polarity of the capacitors before replacing (+ and -). This will definitely take you out of your trouble

Feb 20, 2012 | BenQ FP567s 15" LCD Monitor

1 Answer

No display


BenQ made a lot of monitors for Dell. You may want to look at Dell pictures.
Most common failure in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what goes wrong: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://www.badcaps.net
http://en.wikipedia.org/wiki/Capacitor_plague

Apr 11, 2010 | BenQ FP757-v2 - 17" LCD Monitor

3 Answers

Monitor displays desktop for a short while


this kind of trouble is very common to all LCD monitors. your inverter is shutting down. please check all capacitors at the power supply some are badged or blown on top due to hot pressure inside.

Aug 17, 2009 | BenQ FP71G 17" LCD Monitor

1 Answer

Benq FP92G Display couple of seconds then blank. LED still green.


budged electrolytic capacitor nearby high voltage transformer. 220microcarad/25Volts. apply fresh solder and re-connect lamps.

Jun 01, 2009 | BenQ FP92G+S (Black,Sylver) (Silver,...

1 Answer

Benq computer monitor shuts down after standby in energy saving..


There are 6 (reduced quality) capacitors in the BenQ Q9W5 which cause the screen over time to 'fail to sync' when turning on or resuming from standby.

They are;
4x 470uF 35v, and
2x 1000uF 16v.

I recommend the following replacements if you are in Australia (the ones I purchased from Jaycar only lasted 12 months);
(470uF) http://www.altronics.com.au/index.asp?area=item&id=R4865
(1000uF) http://www.altronics.com.au/index.asp?area=item&id=R5182

Mar 24, 2009 | BenQ Computer Monitors

1 Answer

Dark disp-lay


sorry mate,that is dreaded power interter board inside lcd,read about similar benq model dramas here http://www.electronicrepairguide.com/benq-t705-lcd-monitor-repair.html

Jun 03, 2008 | BenQ T705 17" LCD Monitor

1 Answer

Screen displays fine for a second, then goes blank


Dor, BenQ has a 3yr warranty on their monitors. I would contact their tech support and receive an RMA to return it for repair. It will cost you shipping out there but they will ship it back. I has a BenQ FP731 myself and it blew a capacitor inside that allowed the screen to stay on. Fixed it and had it back in 5-7 days. Good luck.

Aug 15, 2007 | BenQ FP737S-D 17" LCD Monitor

3 Answers

Light is green, but monitor just goes on for a split second then it goes off.


density, I agree from what you have described it might be the inverter board, however, I wouldn't start tearing and replacing based on your description just yet. With the computer on and the monitor power LED green shine a flashlight in the lower left hand corner of your screen. Look for the Windows ?Start? button, if your backlight and/or the inverter board is not working you?ll see a faint ?start? button if you look closely. If that is the case I wouldn't recommend randomly re-soldering or replacing parts on the inverter board. Unless you physically see damage or have the ability to trouble shoot the failure to a discrete component I would suggest replacing the entire board if it is economically worth it. Depending on the monitor this is usually an economically repairable problem. Let us know if you have any other questions and please don?t forget to rate this posting.

Apr 25, 2007 | BenQ FP737S-D 17" LCD Monitor

1 Answer

BenQ FP767 17" Power but no display?


Different faults here.
First fault is no power, it is bad capacitors on the power board.

Second & third faults are the inverters. (power but no image visible, but feint if you shine a light into the screen)
Check the 4 transistors on the main power board for shorts.

If you are unsure what that means, then take it to your local TV technician, he should be able to solve it fairly cheaply.

Hope that helps.

Oct 11, 2006 | BenQ FP767 17" LCD Monitor

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