Question about Computer Monitors

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Computer screen goes blank

I have a NEC LCD1770GX serial# 56112032TA. When I turn on the monitor I get a clear picture and a pop up that says "Video input 2D sub". Then the screen goes dark, you can barely see the contents on the screen. I tried the monitor on another computer with the same results. I really like the monitor because it has auxilliary USB ports. Can it be repaired?

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  • Chuckfun Mar 02, 2008

    I took the monitor apart and found no lights. I guess I should have specified a flat screen. It appears the interior lighting is done with sheets. There is a lot of "stuff" in there that appears to be above my "pay grade". Thanks for trying, I guess I will have to bite the bullet and buy a new one.

  • Anonymous Mar 08, 2008

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3 Answers

I never did find a solution for my problem so I purchased a new HP monitor for under $200.00 at Walmar. I was going to send it away, but I had taken it apart and the repair shop indicates it will not work on one that had been disassembled.

Posted on Mar 29, 2008

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My monitor stay on for 10 minute and gose blank when is go blank I take power cord off and turn it back and stay for 3 minute
and gone agin can some one help me please my monitor is V7
thank you my email bjorche @hotmail.com

Posted on Mar 29, 2008

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Hi this is the way how to examine what's wrong with your LCD monitors. Power on both CPU and monitor. After the scree goes dark, you check that you can see the image on the screen by shining a flashlight into the screen, not directly but find the best angle to the screen and take a look very closely. If you can see the icons or any image, there will be a minor problem. Like me, I can see window image using flashlight and check lamps inside. Some of them were broken and it is easily replaced. If you cannot see anything on the screen, there'll be some problems with inverter board. If you have soldering tool and want to fix it by yourself, check the caps first. It may cause this problem. Some caps might show leaking or burn spot on the board because of too high temp. If you don't have soldering tool, you better go get a technician to do so.

Posted on Feb 28, 2008

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1 Answer

No video


Most likely a bad cap or inverter. This requires a solder iron and the ability to determine if the caps are bad. It also requires pulling apart a monitor with an LCD screen that is hazardous if broke. Taking it in for repairs would be costly and not worth it. I suggest trying a new power cable first and if that doesn't work you should just can it.

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Hi ,
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