LCD Damage

[EssexMame]

I've managed to find a 4:3 21.3" NEC monitor with rotation on the stand, and a VESA attachment (if needed).

I thought it was just what I needed, and would be, but its got lines on the display. Its like burn-in but I didn't think LCD had this issue?

They are visible when the background is blue, not when black/white/green. The display when multicoloured can seem washed out in places - greener than the blue it should be and so on BUT the blue is there just different shades when with an all blue screen.

The lead (old style VGA - 15 pin?) were okay on my previous (smaller) screen so it does seem to be the monitor at fault. I will try the new-style lead later...

I've tried adjusting the colours, resetting to factory default and so on but though I can minimise the look its only really because its darker.

Can it be fixed or is it just ready for the bin?

[mamenewb100]

Doesn't sound good. If you have the screen all one color and it has different shades of the color and washed out. I'm not an LCD expert but I've never had a problem adjusting one. Sounds like it is fried.

[rCadeGaming]

LCD's certainly do have burn-in.  Display a pure white test signal and see what it looks like.  You can do this with Paint.

[MonMotha]

LCDs do "burn" but not nearly as badly as CRTs or especially plasma displays.

There's a couple causes I know of: crystal structure damage due to bad drive waveforms ("bad" waveforms are often intentionally chosen because they can improve response time or require less processing delay, at the expense of causing some long-term damage to the panel) and discoloration of the polarizer due to long-term exposure to the backlight (which has some UV component).  Neither can really be fixed.  I've only ever seen this happen in applications where the same thing was display for several years on end, and usually then only on cheap monitors.

You may also be seeing a different form of ghosting due to reflections on your VGA line.  This can happen at high resolutions like 1600x1200 on poor quality cables.  If you can do DVI (or HDMI), try that.

[EssexMame]

Hi all,

I've tried it on the DVI and I still see the same effect so I'm inclined to agree that its fried. It was used in an office environment so perhaps it was on 24/7 with the same application running.

Shame, as it seems a great monitor (NEC 2170NX). I'm swapping it for an HP LP2065  from the same organization which hopefully won't have the same problem. It seems to have all I need - VESA, decent screen size and rotation on stand etc - i.e. I can fit it into the cabinet however I prefer. Not sure it's as good as a (working) NEC 2170NX but perhaps I'm wrong and the NEC doesn't work anyway!