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could the monitor backlight be out?


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#1 dnaf

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Posted 18 December 2008 - 07:01 PM

I have a Dell Windows XP desktop.

I had to remove some malware this morning (Winweb Security) this morning. A few hours later, while working on email, the screen started blinking, went blank, came back to original email screen, and repeated several times until it finally went blank. I thought originally this might be a residual malware problem.

Now, after a lot of research, I think the backlight in the monitor may just be out or something. We hooked up the monitor to the laptop, power on, still a blank dead screen. And I understand if it IS the light, it's better to just go and buy a new one. the monitor is a 5 year old Dell as well.

Opinions ~

This is the 3rd forum.....maybe I'll get it it on the right one this time!

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#2 DJBPace07

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Posted 18 December 2008 - 10:41 PM

If the backlight is out, you will know. LCD screens look different if they are just displaying a black image as opposed to off. It would probably be a good idea to get a new monitor. How large of a monitor do you want and what will you use it for?

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#3 Platypus

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Posted 19 December 2008 - 02:44 AM

Most monitors normally display some kind of startup splash screen, or if the input is not seeing the video signal, a "No Signal" report before entering standby mode.

If the power indicator light comes on as normal, and doesn't indicate the monitor is in standby mode, but the normal startup screen doesn't appear, then the backlight not operating is the likely cause. Often in this situation if you shine a torch close to the screen in dim surroundings, once Windows loads you can faintly see the screen image lit by scattered torchlight inside the LCD panel.

It's possible that a backlight lamp is at fault, but more often the cause is the backlight inverter, which in most monitors is part of the power board. It may not be a difficult or expensive repair, but considering the low cost of reasonable monitors now, many people do use a fault as the trigger to update to a new unit.

Edited by Platypus, 19 December 2008 - 02:52 AM.

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