Troubleshooting Symptom/Cure Tables: System Problems After Startup - 32
Thin White Line
A a thin, white horizontal line scrolls from top to bottom, or bottom to top on the iMac
display.
Possible Cause Possible Fix
Display may need adjust-
ing.
Adjust the cutoff or white balance using the Display
Adjustment and Display Service Utilities on the MacTest
Pro CD. (See “Video” in the iMac Adjustments chapter
for instructions.)
Power/analog/video board
is faulty
Replace the power/analog/video board.