Download Apple Power Mac G4 Service manual
Transcript
Troubleshooting Screen jitter Symptom Charts/ Video - 5 2 1 2 3 4 5 6 7 Verify there are no environmental factors causing jitter. Check all cable connections. Make sure that the video card driver and firmware are updated to the most recent versions. Test with a known-good monitor. Replace the monitor, if necessary. Refer to the appropriate monitor manual to troubleshoot a defective monitor. Reseat the video card. Replace the video card. Replace the logic board.