Question about LG W2753V PF Flat Panel 27" LCD monitor

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Blank display W2753V. Not power board, need service manual

My LG W2753V blanks out after 1 second. The power LED is still on, so is the LCD backlight. I have replaced the capacitors on the power board, but get the same result. DVI and VGA do the same result. I have not bee able to find the service manual for this unit. I think it may be the input board, but need a part number to try and locate a replacement board. Any assistance greatly appreciated!

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  • Steve Aug 27, 2013

    Hello everyone, many thanks for the ideas.

    The LED on the monitor is not flashing, ti is on solid. A new monitor is working fine. Nothing changed on my system when this monitor stopped. I've even got a new video card (opportunistic upgrade, not done for this specific issue), and that also didn't work. Monitor fails on two different computers.

    The monitor is a couple of years old, and had medium use, not turned on 24/7.

    I'm going to have a look at the inverter board, but I'm not sure about that, as I'm pretty sure the backlight is operating fine (I can see the glow).

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: When I press the power button LG displaying chars for 1 second

Had the same problem, turned out it was due to a faulty capacitor on the inverter board, 680uF 25V (105 celsius rated). Simple to fix once you have the unit dismantled and the correct replacement part. Two screws hold the shroud on, but you need to be careful with an (old) credit card levering it off.

Unit is now working fine.

Posted on Oct 23, 2008

ginko
  • 19396 Answers

SOURCE: LG 700E monitor's power LED blinking continueously, no display

The monitor is probably on protection.

To start unplug monitor from power and from computer and test computer with different monitor to find out if it is monitor or computer fault.

If it is computer fault and no video signal , then test:

  • Video cable.
  • Video adapter on PC (sometimes integrated on motherboard)
  • Motherboard.

If it is monitor fault , then the monitor is on protection.

When on protection you keep having a flashing led on front of the monitor , and monitor turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the Monitor goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or a broken contact, identified an internal fault and kicked in , starting the flashing light.


If you are in situation one, then the monitor will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occurr are a blown capacitor on power board, faulty inverter board, faulty input board, or a fault on LCD Digital Controller board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.

Try moving the video cable, and if the cable is not built in, then also try a replacement cable.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Posted on Apr 22, 2009

sys_admin
  • 829 Answers

SOURCE: lg flatron blank screen

t certainly seems like the monitor is not getting a signal. Did this happen after you changed something, or just on normal boot up?
It could be the video card that has failed.
Also, check the pins on the connector; sometimes they can get pushed in.
If you can, try swapping out the video card or use the monitor on another computer.
Good luck,

Posted on May 10, 2009

  • 732 Answers

SOURCE: My LG 2353 monitor screen goes blank

shaylane_195, Good description of problem! But you left out one or two key things to tell me. Age of monitor? Approximate total "ON" hours of use? Is unit covered by LG (Lucky Goldstar) warranty? You and only you can tell me if the screen is really BLANK, or is it only BLACK? Do flashlight test to determine true state of screen! Can you see very, very faint image of WIN-desktop holding bright flashlight near your black screen? This monitor works!!! You just need to fix the possible (1) "cold, frosty looking, thermally intermittant solder connection on the "internal switch-mode-power-supply/CCFL inverter board. Yes, your monitor along with many other CCFL back-lit LCD units of all brands also could have some BAD, swollen, leaky electrolytic filter capacitors installed on the SMPS/CCFL inverter board which will need to be replaced with new ones of higher quality. Get back to me, lmistyrel on aim. or do additional comment on fixya, after you do some reading in my and other fixya tech's profiles to discover all options you as consumer/user have open to you. Bye for now. 12fixlouie

Posted on Mar 05, 2010

  • 555 Answers

SOURCE: How to open (remove back) Omnitech Vw19B LCD Monitor

You are right about the problem on the flourescent, but the issue is caused by the mosfet transistors. You need to use a flat screwdriver to pry the back of the display until you get this open. Start from the bottom side because some damage will be left on the plastic.

Posted on Apr 15, 2010

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10_18_2012_6_49_22_pm.jpg

http://www.ccl-la.com/blog/index.php/lg-w2753v-repair-no-picture-no-power/

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