Troubleshooting

Symptom Charts/ Video - 51

 

 

 

 

 

 

 

 

Distorted Video

1 Make sure that the video card driver and firmware are

 

 

 

updated to the most recent versions.

2Refer to the adjustments section of the service manual or owner’s manual for the monitor. Adjust monitor as necessary.

3Third-party monitors: Try a known-good monitor.

4Reseat the video cable.

5Reseat the video card.

6Check the video adapter, if present. Refer to “VGA-to- Macintosh Adapter” earlier in this chapter.

7Replace the video card.

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Apple G4 manual