Tempest wrote:
I think my Apple IIgs RGB Monitor may be on its way out. After being on for awhile the screen will start to jump a little. I also think the synch rate is then getting messed up because it starts becoming very hard on the eyes and gives me a headache. If I turn the monitor off for a long time this stops, but it comes back after awhile. At first I thought my eyes just must be going bad, but this never used to happen and I've never had trouble with any of my other system monitors. Has anyone ever had this problem before?
Although there is more than one way to interpret "jump a little", it sounds like the vertical sweep generator (or is it "jumping" from side to side?) is drifting with temperature. Try adjusting the vertical hold control (in back) to restore stability after it warms up. Then see if it isn't stable when first turned on. If you find the "sweet spot" where it's stable both cold and warm, then you're golden. (If there is no such spot, then a component in the sweep circuit needs replacing.) -michael NadaNet networking for Apple II computers! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it's seriously underused."