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6. Troubleshooting
6-1 Entirely no screen
Remove SMPS output connector
(connect Video B d only)
Power on
SMPS Output
Voltage
Logic Connect Power
LED Light-on
(Power, Sink)
X-B d Connect Power
X-B d Output
Y-B d Connect Power
Y-B d Output
Replace Panel
Samsung Electronics
Normal
Abnormal
Normal
Abnormal
Normal
Abnormal
Normal
Abnormal
Normal
Abnormal
Normal
Normal
5V Output
Abnormal
Normal
AC Input
Normal
Replace SMPS
Replace Logic B d
Replace X-B d
Replace Y-B d
Troubleshooting
Replace Video B d
Change Fuse
6-1
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