Screen goes black - comes back with power off/on

The puter may have a bad driver so the moitor dosent work properly?

To check this try booting up in safe mode. You do this on start up by pressing f8 over and over when you first turn on the puter. Then the puter will ask you what mode you wanna start in and you highlight safe mode. Once there go to monitor driver uninstall it and reinstall the driver (hope you kept the disc that came with the monitor.) If not your gonna have to go to the web site of AOC and dowmload a driver. Im saying this as I once had a puter monitor that the peeps thopught was bad and I hooked it up to a test jig and it worked all day. so when i did this to the puter it was fine. Now its astill a possibility that the back light curcuit is defective but maybe not??? Good Luck

PS Safe mode in case you dont know is windows started with NO drivers installed and all the things like the monitor and mouse and keyboard are a windows standard driver and this mode is made so the user can change a driver just in case it gets corrupt or the wrong one is installed.

hi

Maybe the manual and the monitor components don't match up as they should and its running "on the edge?

First thing I'd be doing is double checking the monitor's refresh rates. try reducing the refresh rate

It might be the connection cable.
It doesn't like the mode used when starting up. This is usally 640x480 but could be different depending on configure settings or monitor cable
detection

Have you set up a mode for bootup?
*Configure MoinitorType 4
*Configure Mode 28
*Configure Sync 0 or 1

good luck

it could be that the capacitors of the LCD monitor are dried out. There are 4 I think, you should change them, this is a very common problem with LCD monitors.

Gabriel Cruz

This site (one I knocked up for others) is the cure:

http://zorg.tripod.com/
Full details of how to fix for those with a decent affection for soldering

I have the same problem, I've tried lowering the resolution and reinstalling the drivers but the screen still goes off, I can usually get it to stay on longer if I keep clicking the screen on and off.

I think the problem I have may be something to do with the graphics card or may still be a driver issue. The computer still has the same problem even with a different monitor... which confuses me even more.

I never alter the resolution or the voltage (power) settings so I doubt this is the root of my problems, I may just buy a new computer.

Hi there , have had 2 of these monitor and found that the caps in the power supply needed replacing , the parts are cheap but it does take a bit of time to replace them .

Hi,
I have experienced this problem several times with my aoc LM-727 and each time it has been returned to aoc for repairs.
However this time it is out of guarantee so I have tried to do my own repairs.
First do try it on another pc just in case it is a video problem,(unlikely).Next shine a light onto the screen when powered up and looking from the side you should be able to see the normal screen activity although very dull.If you can,then the backlight is not funcioning and can either be the tubes or the inverter or power supply to the inverter.
To gain access remove the screen from the stand,(screws at rear).Next carefully remove the silver bezel that fits over the flat screen like a picture frame.Be extremely careful as it is delicate,I use a large blunt kitchen knife,after you get this off the rest is easy just remove the appropriate screws etc.You can now access all the above mentioned components for testing and replacement if necessary.Again be very careful especially if you need to remove the tubes they are delicate.There are two tubes one top one bottom and as it is unlikely for both to go,do test the power supply then inverter first paying particular attention to the large capacitors,as they tend to dry up etc.Spares are not that easy to find suggest you google and hope for the best.
Best of luck.

I have exactly the same problem = the screen turns off after 12 seconds. Prior to this the screen has a lower brightness than normal. If I give the screen a "knock" or a push it sometimes helps and makes the screen stay on and with the full brightness, but then next time after booting up the problem is the same again.
This problem can not be fixed by any setup adjustments. The problem is some kind of a bad connection in the hardware inside the screen, likely some bad connector for the fluorescent tubes.
But how do you open this screen? There are no screws visible on the back or sides of the screen.