Apple macintosh se Servicehandbuch

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 Troubleshooting
Symptom Charts/Video
 
 (Continued)
 
 - 3
 
Video
 
 (Continued)
 
Screen is completely 
dark and fan is not 
running
1 Replace power supply.
2 Replace analog board.
Single vertical line is 
displayed
1 Replace analog board.
2 Replace video board.
3 Replace logic board. Retain customer’s SIMMs.
4 Replace CRT.
Single horizontal line 
is displayed
1 Replace analog board.
2 Replace video board.
3 Replace logic board. Retain customer’s SIMMs.
4 Replace CRT.