Technical information

Troubleshooting Symptom/Cure Tables: System Problems After Startup - 34
Tinting Video
Tinting Video refers to a predominant color tint or color covering the screen.
Possible Cause Possible Fix
Environmental causes. Verify that the iMac unit is not near other equipment
(such as speakers, radios, phones, fluorescent lighting,
magnets, or other electronic equipment) that could affect
the video display. If necessary, move the iMac computer
to another area and restart the unit.
Loose video cables. Reseat the video cables connecting from the power/analog
board to the video board. Make sure that both ends of the
cable are firmly seated into their connectors.
Loose video board. Reseat the video board on the CRT neck. Make sure the
CRT neck screw is secure.
Color is out of adjustment. Adjust the white balance using the Display Adjustment
and Display Service Utilities on the MacTest Pro CD.
(See “Video” in the iMac Adjustments chapter for
instructions.)
Bad power/analog/video
board.
Replace the power/analog/video board.
Bad RGB video cable. Replace the internal RGB video cable that runs between
the power/analog board and the P301 and P302 on the
video board.
Bad Logic Board. Replace the logic board.