Question about AOC LM 720 17" Flat Panel LCD Monitor

2 Answers

Lm720a 17" monitor switches it's self

Aoc lm720a 17" monitor switches it's self off after 1second. Won’t come back on till you switch it back off then back on with the power button



Posted by on

  • 1 more comment 
  • Anonymous Apr 08, 2008

    I have exactly the same problem, but as a AOC lm720a is lcd the flyback transformer fix is probably not going to work.

    I have had occasions when it works if left plugged into the mains for a while and then turned on but it generally it gives a brief view of the desktop then goes to standby.

  • Anonymous Apr 28, 2008

    My problem is the same!
    Switch it on and after aprox. 1 second it switches itself of.
    I've checkt al the connectors and soldering but no result

  • Anonymous Feb 15, 2009

    I have the same problem my lm720a 17" monitor switches it's self off after 1second. Won’t come back on till you switch it back off then back on with the power button



2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 11 Answers

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

Posted on Feb 15, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Does omebody knows a repair manual for this monitor ??

Posted on Apr 28, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Aoc e2043 osd locked.How do I unlock? Lt button trick didn't work.

Please try to Turn the monitor off. Hold down the Menu button while the monitor is turned off, then press the Power button again to turn the monitor back on. This should unlock your OSD menu. best regards

Aug 25, 2012 | AOC LM742 17" LCD Monitor

2 Answers

Cannot turn on my monitor as power switch is not functioning

hawaibampras, Try thinking about the problem this way instead. "On/Off" switch works!! The electronic circuit that the switch is connected to is not "listening" to it any more. You will need to investigate units internal switch mode power supply board. Switch should be good for minimum 10k to 50k actuations!!! That would be approximately 2000 to 3500 days useage or more. 12fixlouie

Oct 26, 2010 | AOC LM729 17" LCD Monitor

1 Answer

I need a power cable for an LM720a monitor

There is a new one at
heres the link.

Aug 30, 2010 | AOC LM 720 17" Flat Panel LCD Monitor

1 Answer


if u are changing ur old monitor to new u may face problem ,

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

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

Nov 09, 2009 | AOC LM729 17" LCD Monitor

2 Answers

Help me instal aoc mod.tft19w80ps monitor

yes you first connect monitor then insert cd came with pc wait window will open select vga driver option it will be installed then switch on pc

Nov 20, 2008 | AOC LM742 17" LCD Monitor

2 Answers

AOC 17" Flat CRT Monitor

Could be problem of key switches!
Try replacing or check for leakage,high resistance across switches using ohmmeter.

Jul 26, 2008 | AOC CT720G 17" CRT Monitor

2 Answers

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.

Mar 03, 2008 | AOC CT720G 17" CRT Monitor

1 Answer

I have a problem vith a monitor aoc lm720a

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

Jul 31, 2007 | AOC LM720 17" Flat Panel LCD Monitor

Not finding what you are looking for?
AOC LM 720 17" Flat Panel LCD Monitor Logo

632 people viewed this question

Ask a Question

Usually answered in minutes!

Top AOC Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18419 Answers

Jerry Umali

Level 3 Expert

979 Answers

Raj Patel

Level 3 Expert

917 Answers

Are you an AOC Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides