frel@randvax.UUCP (Dave Frelinger) (01/15/90)
I have been having a real problem with my Apple RGB Monitor. The image is ustable, jumping a little in the horizontal. The real problem is its intermittent nature, and its nasty habbit of never appearing when the technician is working on the monitor. I have tried to have this fixed by replacing the analog board in the monitor, but that didn't seem to fix the problem. Has anyone else had this problem? Is this consistent with a problem with the monitor's power supply? Dave
jong@k.gp.cs.cmu.edu (Jon Gotow) (01/16/90)
"frel@randvax.UUCP (Dave Frelinger)" writes: >I have been having a real problem with my Apple RGB Monitor. The image is >ustable, jumping a little in the horizontal. The real problem is its >intermittent nature, and its nasty habbit of never appearing when the >technician is working on the monitor. I know this may sound stupid, but try moving the video cable. I had this same problem, and after much worrying about the horizontal deflection circuitry dying, I was messing around behind my Mac when the problem suddenly went away. I had one of those little plug-in transformers for my modem sitting right next to the video cable - it seems to have been generating enough interference to disrupt the video signal slightly. Moving the cable closer caused the problem to reappear, relocating the transformer solved the jitter altogether. Hope your problem's that simple! Jon Jon K. Gotow Research Engineer The Robotics Institute Carnegie Mellon University. jong@k.gp.cs.cmu.edu CMU has nothing to do with anything I say - they seldom acknowledge that I even exist.