Question about AOC LM720 17" Flat Panel LCD Monitor

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I have a problem vith a monitor aoc lm720a

Ven ai start my monitor i dont have any control on the meniu the only fing the monitor due its changing the colors like she is in a service mode first ist red after gren and last blue .someone now the problem?

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  • Anonymous Mar 13, 2008

    i have the same problem plug it in the vga plug & its black take it out & goes through a test pattern thing whats coursing this is it the lead . mine is the 520



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  • 15 Answers

Try to connect another monitor to verify the problem is related with your video card or the monitor itself

Posted on Aug 01, 2007


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Screen+ application that came with my AOC monitor isnt working when I try to change the configuration to multiple on display 1 or display 2. What happens is "AOC grid screen executable file has...

This sounds like a computer problem and not really a television problem. Check your driver files.

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press F8 when the system starts and select the safe mode option and login admin mode change video settings resolution(control panel/display properties) into higer like (1020 pix) and if it visible give yes and restart

May 19, 2010 | AOC LM720 17" Flat Panel LCD Monitor

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Dec 27, 2009 | AOC Computers & Internet

1 Answer

Hi, I have an AOC LCD Monitor LM720A and I can't get it to turn on, ie a power issue possibly, I have changed the fuse and there is still no life, any help would be greatfully appreciated. Thanks Tony

anthony_salt, If the fuse you replaced is still good, then I would first check the "switch-mode-power-supply" for bad electrolytic filter capacitors. By the way, was the original fuse bad? I also highly recommend you pay a visit to YOUTUBE, search out and view the longer vid clips of lcd monitor disassembly and lcd monitor repair. FYI try a website run by another fixya guy nickname is "buddymc" and the site is They refurbish (rebuild) lcd displays of all kinds and all manufacturers. You can also check out these other sites FYI. , I hope that this info steers you in correct direction. Good luck guy. 12fixlouie bye

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No display

Try Unplugging the monitor and plugging back in again,,,you dont have to shut the PC down to do this,,,if it starts backup,,,then good... if it doesnt,,then you need another Monitor.
An LCD monitor is better for your eyes anyway.

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AOC 17" Flat Monitor (silver)

Hello all.I had 2 AOC monitors with this kind of problem also and figured out the problem with this kind of monitor. All you have to do is to unscrew the monitor and get the control control switch buttons on its circuit board. There are four switch button that control the monitor with four pins each that attaches to the circuit board of AOC, another option is to replace the switch button with a brand new  control switch button which can be bought to your local electronic shop. Now i had no problem with my AOC monitor because i literally removed those switch control buttons from its circuit board.

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Lm720a 17" monitor switches it's self

try to resolder all lost contact on flyback transformer..............................

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