LCD screen waves

[Kantham]

I'm getting this since this weekend. There's weird noticeable waves on my Acer 17' that sometimes show up when the monitor is running for a while (30 mins). My room temp is generally on 23 Degrees, so I doubt it's heat issues.

Any ideas?

[Slainchild]

Could just be getting old...

Try running it at a different refresh rate?

[Kantham]

Yeah I did that, at 60MHZ it started getting worse.
You can clearly notice them when I open Photoshop without a blank workspace, just gray behind and the tools around. Though here on the forum with this white bright theme, no problems.

To me it's everytime there's white for the LCD screen to render, the waves appears on the darker areas.

[Slainchild]

Another random thought. Are you using a DVI cable as opposed to a VGA? IIRC I had a similar problem and using DVI fixed it.

[Kantham]

Yes, VGA to DVI, since the monitor is VGA.

[Kantham]

Wait, I just put my LCD to Warm, and everything is alright. Though Warm is a large usage IIRC. It was set to cold, and I'd like it to remain like such.

In other words, a perfect balance of Red, Green and Blue cause these waves. Adding more R,G or B solve this issue. WTF man. :con:

...Oh nos. The waves. They're back.

[Jacks:SmirkingRevenge]

omgjeeze, learn to edit one post:catfight:

[Kantham]

Get out of my thread. :mad:
PS: Fixed.

[Plumb_Drumb]

Well, I hope you get it sorted out.

I've been having strange problems (not waves) with my CRT lately and it bugs the hell out of me.
If I set it above 75 htz on any resolution everything gets blurry, and sometimes there are these strange horizontal shadows on the desktop that stretch from the icons all the way across the screen.
(that last problem only peaks around once in a while, but it bothers me).

Stupid thing is supposed to be one of the highest rated CRT monitors still available, and it just went out of warranty.

[Kantham]

It sure sucks when expensive things starts to act like something they shouldn't.

[Plumb_Drumb]

I'm considering the mountain man life.

Courier Squirrels will be my internet, and I'll shave a deer for porn, or something.

[Deathmaker]

and I'll shave a deer for porn, or something.

Wouldn't a beaver be more appropriate?

[Dracomir]

I have this problem too although since I changed my GFX card it got a bit better (actually I rarely get the waves anymore), however the problem is indeed the converter. It seems to cause some kind of interference.

Well I couldn't find any other reason. I thought about the cable first than my VGA, than that the monitor is dying or too high temperatures or some software related error but looking at forums and asking around (and changing my converter to a newer one) seems to reinforce the interference theory.

[Wormbo]

Did you consider checking the cable? Or other electric devices in the house? I've seen microwave ovens affecting CRT displays already, maybe your problem is similar.

[Nemephosis]

I have the same thing, but it's just the monitor. I had a 17 inch monitor that worked fine. I got a 19 inch, and now I have these distortion waves across it every second it's powered on. I can't afford a new one right now, either, so I just have to deal with it.

[Kantham]

I have to admit I cleaned the screen with a very few water. You can see the water "evaporate?" on the plastic of screen extremely fast, though I heard a lot of people are doing this, but ever since I've done that my screen is doing these waves.

I need something to cover up, especially the next screen I'll buy.

[Hadmar]

I really doubt it was the water. We have that at work relatively often. The signal the GFX card puts out doesn't seem to be interpreted without problems by the TFT anymore I believe. Changing the refresh frequency changes the signal and fixes it at least temporarily. Switching the GFX card fixes the problem, too as does switching the TFT. My explanation is that parts do age and the card and monitor - the DA/AD conversion to be precise - just seems to become incompatible. Never saw it with a DVI connection BTW, which really is no surprise since there's no DA/AD conversion taking place. And just to make it really clear: I do not know what causes it, I'm just assuming.

[Jonathan]

I have a DVI LCD (20") and a 17" VGA, and the VGA LCD has "waves" to it sometimes to, though sometimes it's hard to notice.

Plan on buying a nicer LCD later.

[Kantham]

I kinda start to deal with it now, as long as it doesn't get any worser.

[ZenPirate]

Have you tried the simple things like uninstalling your video drivers, booting to safe mode and running drivercleaner pro, then restarting and installing the latest drivers for your card? Refresh rate won't matter on an lcd screen, so that's not it. You should also try wiggling the video cable all down it to make sure it isn't going bad. I had that happen to two different pcs I worked on.

[Jonathan]

LCDs do have a refresh rate, as most of them are stuck at 60hz, however, the thing is, unlike CRTs, once a pixel has been lit on an LCD, it stays lit until the next refresh, hence there is no "flickering" like CRTs have, because they constantly have to redraw the image.

My VGA LCD can go to about 78-80hz, however, it distorts onscreen text a little, but does make games look a little more fluid if they're running at that rate or higher.

I used to love playing at 1600x1200@120hz (Sony Triniton-tube CRT), but it gives me headaches now.

Here's an example of a 120hz LCD, though some of them don't accept 120hz input, but rather, take a 60hz input and upconvert.
http://www.cinemablend.com/technology/JVC-s-Latest-120-Hz-LCD-Television-2567.html

[Defeat]

I love my CRT :>