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nschloss · 12-05-2001, 01:28 PM

I moved my computer into a different room and now my video image has a noticeable 'shake'. Shake is worse the higher the refresh rate. Have tried it with different video cards, refresh rates and computers - always shakes. Tried different power sources (even extension cord to different part of home) - still shakes. Moved out of the room - everything is fine! Moved back in - shakes! So ... something about the room is a problem. Would this be EMI interference? The room is bare except for a desk, incadescent table lamp, and a ceiling fan. Could the ceiling fan motor magnets be my problem? I'm stumped! Is there any way to block EMI? Any way to do a definitive test for it? Am I chasing the wrong problem? Help!

12-05-2001, 01:28 PM	#1
nschloss Member (2 bit) Join Date: Dec 2001 Posts: 2	Screen shake I moved my computer into a different room and now my video image has a noticeable 'shake'. Shake is worse the higher the refresh rate. Have tried it with different video cards, refresh rates and computers - always shakes. Tried different power sources (even extension cord to different part of home) - still shakes. Moved out of the room - everything is fine! Moved back in - shakes! So ... something about the room is a problem. Would this be EMI interference? The room is bare except for a desk, incadescent table lamp, and a ceiling fan. Could the ceiling fan motor magnets be my problem? I'm stumped! Is there any way to block EMI? Any way to do a definitive test for it? Am I chasing the wrong problem? Help!