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Is it my monitor or my video card?

O

optoman

Diamond Member
Lately my monitor has started to flicker on the edges. You can see it more with a blank explorer screen open. If I increase the refresh rate from 85 Hz to 100 Hz, it seems to go away. If I go down to 75 Hz, it gets worse. Is it my video card that is going bad or the monitor?

TNT2 Ultra video card
mitsubishi diamond pro 900u monitor

Is there anything else I can check to determine what the problem is? I have already tried to reconnect the video cable.
 
I've had a bunch of TNT2 cards go bad on me recently - and so have other Anandtech posters. However none of the symptoms sound like yours. Do you have any friend/family/neighbor that will let you borrow their monitor for 1 hour? If so just swap monitors as that is the easiest way to check. If not, go buy a cheap monitor and then return it (although this is a bit less ethical).
 
dullard - Thanks for the response but I think I figuired it out.

I do have a second computer that I just hooked up and the screen has the same problem with the flickering at the edges. I actually knocked on the tube and noticed fringe patterns that travelled like ripples in water. They didn't travel all the way across the screen, but just where I see the flickering. Is there something in the tube can come detached?
 
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