Hi guys, am having a small problem with my CRT, It's a Samsung 24". I'm getting patterened flicker across one side of the screen and it doesn't matter what refreshrate I'm using - have tried from 60hz to 200hz.
I used to have another CRT right next to it on the 'flickery' side, for about a year so. I was thinking maybe the magnetic field from that screen messed this one up? However it's been over 6 months since I replaced that screen with a LCD one - would the ill effects crop up after this much time?

Any ideas very welcome!

Ta muchly