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shaking crts..

S

scottatwittenberg

2[H]4U
Joined
Apr 10, 2002
Messages
3,306
i moved my mom's computer upstairs.. but hooked it up to a monitor that was already there.. it is a 17 inch crt.. dell.. not that it matters.. non triniton at least.. but anyways.. it shakes.. it did it slightly when i first hooked it up, but my mom didn't notice.. but tonight it was going crazy.. i could see it from across the room, and she noticed it too finally.. i turned off the ceiling fan.. and stopped it.. i don't think it is even possible that any wires are running in the wall behind it from where it is located in the house, except possibly the ceiling fan/lamp.. but that is probably wired from the lightswitch somehow.. but it shakes.. i can make it mostly go away if i put the vid card down to 60 hz.. it does it the worst about 85 hz.. (which is the highest i can get it to go anyways)

it was doing it slightly on the gateway crt downstairs.. but it went away... it used to do it when the microwave was running, but quit doing that... so i don't know what is going on..

is it possibly some wierd harmonic distortion with the electrical lines in our hosue? or does my mom's vid card overheat? or is her 6000 rpm shitty cpu fan doing it, even though it is a good 2 feet from her monitor?
 
Not that PC Magazine is the ultimate source but a few months back they had an ongoing article about how many people send monitors back as bad, and do it several times. In this authors case it turned out to be a simple desk lamp causing the problem. A good UPS might indeed help and or a quality power strip with built in AC noise filtering.
 
I'm currently living in an apartment with older wiring and, as such, only having two pronged outlets, from which I use an adapter to hook up my power strip. Will a line cleaner still work on these setups or does it somehow require the ground?
 
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