CRT monitor's l\right edge discolored greenish - will this clear up or is my screen fucked? (8)

1 Name: 4n0n4ym0u5 h4xx0r : 2010-11-21 19:09 ID:mwLzVzxe

Hay guise,

so I recently hauled my old 19" CRT out of storage and connected it to my PC. It seems to run fine, but most of the upper right corner down to the lower right edge of the picture suffers from green discoloration. When I googled this phenomenon, I read several claims that this was caused by exposure to magnetic fields and should clear up within a few days of usage assuming it wasn't too strong a field that caused it.

It's now the second day of usage, and I have yet to spot any improvement.

So what does /tech/ think? Can the monitor be salvaged, would e.g. a visit to a TV repair shop with a degaussing coil help speed up the healing, or should I start looking for a new screen?

2 Name: 4n0n4ym0u5 h4xx0r : 2010-11-25 06:24 ID:oaA4iw5L

Why would you use a CRT monitor in the first place?

3 Name: 4n0n4ym0u5 h4xx0r : 2010-11-25 11:41 ID:rODHFbMt

>>2
I've had it since 1999, and couldn't be bothered to get rid of it since it still works, and at higher resolutions than most affordable LCD screens out there.

4 Name: 4n0n4ym0u5 h4xx0r : 2010-11-28 14:02 ID:/8SSsblY

Do you have a loudspeaker next to your monitor? Some speakers, normally those not made to be placed next to monitors, will mess up a CRT screen with magnetic fields. This won't go away though, as your friends apparently claim. Check if your screen has a "get rid of magnetic interference button", you usually find this in the main menu of your monitor, often with an icon of a crossed over magnet.

If that won't work, move the speaker (or whatever it is that's interfering) away from the monitor, you should see the colors change on the screen immediately.

5 Name: 4n0n4ym0u5 h4xx0r : 2010-12-06 22:58 ID:NTHRCsvM

>>4
There aren't any speakers in the immediate vicinity (closest is at least 10" away), and the problem hasn't really gotten better over the past two weeks. The degauss button doesn't do anything except the usual rainbowy patterns for a second or two. I've also noticed flickering, sometimes the right and left edges of the screen distort in sine wave-like patterns, and the screen blurs a lot when I click on an unresponsive browser tab/window. I blame Compiz/GNOME for that last one, though.

I guess it will be time to chuck out this monitor some time soon after all, and get a flatscreen capable of UXGA or higher resolution. Yet another thing to add to my wishlist ...

6 Name: >>1 : 2010-12-12 01:03 ID:NTHRCsvM

On the plus side, it does look rather pretty. (Link to cell phone photo of CRT displaying a fullscreen image of #0000FF, despeckled, cropped and resized in GIMP.)

7 Name: 4n0n4ym0u5 h4xx0r : 2011-02-03 02:00 ID:NROxLKUB

If your monitor does not have such a degauss button, you can do it with a magnet, start far away, and quickly move it from side to side, moving closer to the affected area until the image is deflected, then without stopping, back away the magnet. if that doesn't help, move closer. repeat until it's cleared.

by using this method, you're essentially doing the same task as the degauss coil. you might need a fairly strong magnet, however, and you might muck up the rest of the screen, but as long as you are careful, you should be able to clear it up

8 Name: 4n0n4ym0u5 h4xx0r : 2011-02-03 02:04 ID:NROxLKUB

i also have a monitor that does those edge distortions, it's most likely line interference. Bump up the refresh rate and it SHOULD clear.

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