Samsung SyncMaster 460DX - Folie 92

Troubleshooting – No Power
Troubleshooting – No Power
Does 5.2 V appear at Pin #15 of CN602?
Does DC 12V appear at C653?
Check the SMPS Board.
NO
YES
Check the peripheral circuit of CN602.
NO
Does 3.3V appear at C622?
YES
Replace IC602.
NO
Does DC 1.8V appear at C603?
YES
Replace IC601.
NO
Does 3.3 V appear at Pin 16 ofCN602?
YES
The Scaler(IC408) is abnormal.
Replace the main board.
NO
2
1
4
3
2
1
3
4
CN602
C653
C622
C603
BD643
Does DC 12V appear at BD643? Check the LCD Panel.
NO
YES