Question about AOC LM729 17" LCD Monitor

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Nothing display on my AOC monitor even my computer working because i can hear the beeping sound of windows. The monitor light is always green even though i turn off its still on green light . help please i dont know whats the problem tnx a lot

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Nothing display on my AOC monitor even my computer working because i can hear the beeping sound of windows? This trouble maybe power supply or inverter boards is defective.
first you can test the voltage of the multr,and then check which part is defective.From Wisiny.com can find those parts
if you have any question,please let us know email:service@wisiny.com.thanks,we sincerely hope we can help you!
you can also check this boards whether suit you:
715L1103 AOC IDPC7425A3 Power Supply for TFT1780PSA LM729

Posted on Dec 23, 2014

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  • Expert
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Check RAM or replace it

Posted on Apr 28, 2010

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Posted on Jan 02, 2017

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1 Answer

Blank screen


Did it boot all the way? Do you hear the fan running, disk drive spinning? If it sounds like it booted but the display is black, try this:
When you press the power button do you hear fansrunning, hard drive spinning, lights on the computer, hear any beeps or lightsconstantly blinking, hear the DvD/CD drive click and the light on the drawer ofthe DvD/CD turn on for a second or two? If so the laptop is trying toboot or may have booted, but the screen is not showing for some reason.

Beep tones and blinking lights tells the technicians what is going on with thelaptop and why it is not booting. Most times it's a motherboard issuewhen you hear beeps or blinking lights continuous.

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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.

Try removing your driver files. Then disconnect your AOC monitor. Reboot the computer and login. Shut down the computer and reconnect the AOC monitor. Start the computer. Now install the monitor drivers.

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I have aoc lcd monitor, but no display and always orange the swicth botton. what is the problem of my lcd? can you help me? thanks..


It sounds like there is no signal to the monitor. The computer you have, does it work if you hook up another monitor? Have you taken this monitor to maybe a friends house or neighbor? See if it works. If it does; there may be a problem with your computer's video. If the monitor does not work; the issue is the monitor. It will then need to be replaced.

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My AOC Monitor turns black and the power indicator turns orange and these keeps going on even when I restart.


That means the monitor's not getting a signal from the computer. Do you know for sure that the computer is starting up properly? Have you tried another monitor to test the computer? Is the monitor cable securely connected at both ends?

Even if the monitor is bad, you should still hear something (usually a single beep after the power-on tests finish) from the computer when it starts up. I suspect you have computer problems.

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1 Answer

AOC color monitor model 5En...during power on all led lights blinks then stops blinking without display action. all led lights on no more action observed.


actually if u repair an aoc monitor alone without getting connected to cpu once u switch on the monitor all led's will lit on ( green light ) it will remain on situation until u connect the vga connector to cpu that's the time led's will lit off and only the power led will remain in green condition.some aoc 5en once u power on power led is in green condition and if not connected to cpu it will be in orange condition.hope u get some idea but i am not sure if it will work with ur monitor. but as long as LEDs lit on i think no problem with ur monitor.

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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.

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2 Answers

Dimension 4500S


hi!,
I hav a solution 4 u . Ur LCD monitor's wires of ur Laptop Has gone loose , U can just give ur lappy 4 a servicing.
byeee........

Mar 08, 2008 | Computers & Internet

1 Answer

Dell E173FP 17" Monitor


I just had the same problem as well - mine happened during a windows update, related? Also, for me the monitor doesn't come one even after disconnecting from computer, nothing, just blinking green light.

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