Question about Sony VAIO VGC-LS21N PC Desktop

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I have the same problem!

I have the same problem my vaio desktop is only 18 moths old and it's screen is two weeks ago just went blank and it stays the same since then.

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Your sony computer has a bad LCD backlight or LCD backlight inverter. Need a service repair by qualified tech.

Posted on Jul 27, 2009

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Posted on Jan 02, 2017

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Try another monitor on it to verify it is the video card that has gone bad. If it does not work with another monitor then that is the likely culprit.

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You will either have a fault with the inverter board which drives the backlights or a faulty backlight in the screen. If the problem is a backlight then a replacement screen is the only cure. One or the other is breaking down after it has been opn for a certain period of time, have an engineer call out & check with a tester if it is a screen problem.

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Cant see anything on my sony vaio pcg-72dl screen its just blank


Your backlighting may be out.

Try shining a flashlight onto the screen with the lights off in the room.

If you can vaguely see your desktop on the screen, then your backlighting is out.

Let me know if this works,
Simon.

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I need Help


An infection could cause the issues your having. I recommend letting a professional help you clean your system. Removing infections is very dangerous and risky. They can cause data loss and you risk making the system worse. I recommend NickLockard.com

http://www.nicklockard.com

Jun 28, 2008 | Sony VAIO Digital Studio PCV-RS420 PC...

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