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I have a LM729 AOC monitor had to turn on and off to get it on then it went black ?

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  • 152 Answers

Autotech_2, Your monitor if it is an LCD "cold-cathode-fluorescent-tube" backlight type of display your "switch-mode-power-supply" has partially or totally gone into SHUT DOWN mode to save itself from "catastrophic failure"!!! Please go and visit YOUTUBE and search for "LCD disassembly", and "LCD REPAIR" video clips. It will be very helpful to you in making a decision about what steps you should take in getting it repaired and or replaced. Some lcd displays can be fixed by their handy and crafty resourceful owners for $10-$15 dollars. Your problem of a DARK and or BLACK display is quite common complaint. Although you didn't give any history (did monitor have nice,bright, screen prior to the failure? or the AGE of your unit?, approx total "ON" hours of unit?) I still suspect that it is a SMPS/INVERTER probllem. Find out all you can about Swollen electrolytic Capacitors and other common SMPS/INVERTER failure modes of LCD monitors. I hope this info was of some help to you. l'm louie12fix on fixya or lmistyrel @ aol.com please rate this response on fixya. Bye for now.

Posted on Oct 07, 2009

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Posted on Jan 02, 2017

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SOURCE: AOC LM729 17" LCD Monitor - Manuel

I assume you only found the 4 mount screws in the back... You also need to take off the front silver edging - it pops off with some negotiating, but if you find the right spots and don't pry hard it will come off clean without too much difficulty. Then take out the screws that hold the screen inside and it should drop out.

Posted on Feb 04, 2008

Benimur
  • 6966 Answers

SOURCE: Problem with the risolution

Hi,

To my understanding, an AOC LM729 is capable of 1280 x 1024 and therefore should be able to display your preferred 1024x768 .

Perhaps you need to set the PC's Display Screen Refresh Rate to 75 Hz or lower (DisplayProperties/Settings/Advanced/Monitor).

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Mar 14, 2008

  • 33 Answers

SOURCE: aoc lm725 display off after few seconds

I've had a very similar issue on many Dell Monitors. Mine have been under warranty and they usually send me a new monitor, but I believe the issue lies with the power supply within the monitor.

Posted on Jul 10, 2008

SOURCE: AOC LM729 17" LCD Monitor

Well I just resoldered both coils, and it Worked!!! I was about to throw away the monitor, but luckily found this page!
Thank You!

Posted on Jul 17, 2008

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My AOC screen goes black after about a few seconds after booting.


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The picture board on your monitor is bad, since it goes off after few seconds and the power led or button is on, it means the picture board of your monitor has developed fault.

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Aoc lm725 display off after few seconds


I've had a very similar issue on many Dell Monitors. Mine have been under warranty and they usually send me a new monitor, but I believe the issue lies with the power supply within the monitor.

Jul 10, 2008 | AOC LM729 17" LCD Monitor

4 Answers

Problem with the risolution


Hi,

To my understanding, an AOC LM729 is capable of 1280 x 1024 and therefore should be able to display your preferred 1024x768 .

Perhaps you need to set the PC's Display Screen Refresh Rate to 75 Hz or lower (DisplayProperties/Settings/Advanced/Monitor).

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Mar 14, 2008 | AOC LM729 17" LCD Monitor

2 Answers

AOC LM729 17" LCD Monitor - Manuel


I assume you only found the 4 mount screws in the back... You also need to take off the front silver edging - it pops off with some negotiating, but if you find the right spots and don't pry hard it will come off clean without too much difficulty. Then take out the screws that hold the screen inside and it should drop out.

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There should be an problem with your power card or please change your monitor immedietely...

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