General Troubleshooting - Samsung SyncMaster 753DF Service Manual

5-2 General Troubleshooting

5-2-1 No Picture
LED blinks?
No
LED is green color?
Yes
Check G2 voltage, high voltage,
R, G, B cathode voltage.
5-2-2 Shut Down
Blinking LED's?
Yes
Scan failure
No
Video failure?
No
Check and replace IC201.
Done
SyncMaster 753DF/755DF
Yes
Refer to 5-2-2 Shut down.
No
Check Micom.
No
Check power supply.
Check horizontal, vertical deflection
Yes
system and check power supply
secondary voltages.
Yes
Check Video board.
5 Troubleshooting
5-13