Question about AOC LM929 (Black) 19" LCD Monitor

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Power Monitor is only a year old and the power just suddenly went out. I tried it on another computer with no luck. It is just dead. Any suggestions?

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Re: Power

Check the power pack to see if it has the required output voltage, usually 12-15 volts. solidstate power packs are prone to failure. The LCD screens require between 2 and 4 amps to power them. A strain on some power packs. Gary(Honkity Hank)

Posted on Sep 18, 2007

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Hello, I have a samsung 943nw PC monitor and all of a sudden the screen went off and the power light went off also. I have tried connecting it to a different power source but still not working. I thought...

If the monitor is completely dead, then is sounds like the power supply board has failed. Sometimes it an easy fix, by replacing a fuse. Most LCD monitors do hav a fuse, the only way to know for sure is to open the case and troubleshoot the power supply.

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Each monitor has a different response to "no activity" from the system. So for the monitor, if you get a chance, try your monitor on another machine that you know does function. At work, neighbour, or other.

For the computer, does the it (beep) or POST (Power On Selft Test) when you turn it on, do you see and hear what you would if the monitor was connected?

If it sounds normal, then everything should be fine and luck might have it, your backup monitor is not working either, try another one from the same friend or neighbour above.

If it doesn't POST, you could have a video or other card or ribbon connection loose in the computer. Either you or a friend, or the service center, whichever feels comfortable reseating all the external and internal equipment, bearing in mind static electricity and proper handling measures for the computer.

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Sounds like a fairly drastic fault, possibly in the power supply section. Probably not worth fixing with the cost of new LCD screens, but maybe worth asking at a local repair place.

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Check all caps in power supply. Look for the tops of the caps to bulge. Replace any that looks or smell bad, like a sulfur smell. Make sure you put them in the right way. I usually increase a cap that blows. If its a 16v I go to a 25v or a 25v to 35v. keeping the same ufd. Because of the surge, off and on, It helps.

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You will need a new monitor screen. I have had two screens go on me recently and what you describes normally happens

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It's seems you guys had a bad lucks! Your backlight inverter are busted. Need to replaced a new inverter...Guys! Have a nice day!

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Five years is a long time for an LCD panel. You definetly got your money's worth.

But, if your trouble shooing has led you to this conclusion I can also only conclude that the power driver inside your panel just gave up the ghost.

However, try giving Dell a call, for what's thats worth and see what they have to say.

You might also want to ask this expert "Robotek" what he may think as he is a board troubleshooter and could give you an answer if one is there.

Type this or copy and paste into your browser's address bar:

And then click on the Ask Me button under his picture.

Best regards,

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