[G3 Addict]

i have a power mac G3 beige 233mhz,128mb RAM, 20.5gb HD,16 ATI grapgic card an old monitor (Apple Multiscan 15" display) and a set of speakers with a cool sub woofer!... in fact i have MAC OS X in my machine and runs smoothly!----the thing is, that i buy a brand new monitor of 19" its great and have great colors.. but two weeks ago,the screen start shaking, and its very cruel for my eyes... my wife cant use it because of that, and i was wondering why the screen is shaking, with the other monitor never happened, someone help me here... somebody told me that i have to appart the speakers near the monitor, i did. the shaking screen stills there! help a real mac user
my e-mail is dearmas@mac.com

[WDL]

Sure sounds like electrical interference.

Unplug everything except the monitor, keyboard and mouse - this means unplug the speakers,
any table lamps, fans - ANYTHING THAT USES ELECTRICITY that in the room your Mac is in.
Now, how does your monitor screen look. If it's clear and stable, then you'll know one of the devices
you unplugged is causing your problem. I would suspect the speakers first because they may have
inadequate shielding.

Let us know what you find.

WDL

[tr]

Make sure there are also no AC adapters/transformers or power supplies in the vicinity of the monitor. The 60 Hz AC current going through these will definitely cause a monitor jitter.

tr

[denim]

Also, if the monitor is near a wall, something generating that 60Hz signal nearby on the other side or in the wall can have this effect. One way to fix it w/o going into the next room, since that may be impossible, or into the wall (ditto), is to put up some kind of ferrous shielding, like some iron screen/mesh or other RF shield between the monitor and the probable signal's source.

[Raman]

.. or it's defective and you should bring it back and get a new one...

.. or you have you isub turned way to loud

.. or you live next to train tracks

[kertong]

make sure nothing is interfering, and put down the crackpipe.

j/k.

I don't know if this helps, but for me, my nokia 5120 cell phone makes my monitor shake REAL bad when I get a phone call.

So.. i'm pretty sure your monitor shaking is from electrical interference.


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My computer can beat up your computer.

[fobside]

Originally posted by kertong:
make sure nothing is interfering, and put down the crackpipe.

j/k.

I don't know if this helps, but for me, my nokia 5120 cell phone makes my monitor shake REAL bad when I get a phone call.

So.. i'm pretty sure your monitor shaking is from electrical interference.

youd know all about crack pipes eh, kertong yeah, a lot of times its just interference from other signals. check and see what you might have around that might cause this...microwave, tv, phones...etc.



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I used to use a PC.

[denim]

Originally posted by fobside:
microwave, tv, phones...etc.

...AC wiring...

[bluedog]

I've had an older monitor do this and there was a quick fix for me.

I noticed the screen refresh rate was rated at 74.5Hz, and if I set it to the more appropriate 75Hz everything was just fine. It could be a timing problem with your screen resolution and refresh rate.

Check you monitors control panel, just above resolution is a pull-down menu that allows you to select "All" versus "Recommended" resolutions if you are using a multisync monitor (one capable of syncing at different frequencies and resolutions).

Try switching to a different resolution and see if it helps. If so, you might try and get a screen-resolution utility to open up all the possible settings (more than is available through apple's control panel) and find the best settings for your monitor.

Good luck, otherwise it could be a component going bad (more likely your monitor from what you described, rather than your video card).

[G3 Addict]

thanxs everybody for the help.. My screen stop shaking... i went to monitor control panel and search for resolutions tools, and asign 100 mhz to my monitor.. everything look great!