In a previous post, you wrote: >I have a problem with a Princeton Graphic Systems EO70 17" monitor. Actually, >I am not totally sure it is the monitor. Sometimes -- not all the time -- >after operating for several hours, the display begins to jitter. It kind of >"vibrates" on-screen. I'm not talking about flicker. I mean the whole picture.... Make sure you have no other electro-magnetic interference near the monitor like another monitor or a fan; those two are quite common monitor disturbances. If those possibilities have been eliminated, I invite the others to post because you got me beyond that. hope this helps, gary r. tennesen [log in to unmask]