Troubleshooting | Symptom Charts/Video - 10 | |
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Video
Screen is black, audio and drive operate, fan is running, and LED is lit
1Adjust brightness on monitor.
2Replace video cable.
3Try using
4Replace video card (if present).
5Clear parameter RAM. Hold down <Command> <Option> <P> <R> during startup but before “Welcome to Macintosh” appears.
6Replace SIMMs.
7Replace monitor. Refer to appropriate monitor manual to troubleshoot defective monitor.
8Reseat ROM, RAM, and cache SIMMs, and reseat terminator card.
9Replace logic board. Retain customer’s SIMMs.
10Replace power supply.
