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5-3 No Power
Plug in the
Power Cord
Check Power LED
Check IC901 B+
(3.3VDD)
Check Q804
HC801S
FA801S
FA802S
Check
CN901, CN902
Samsung Electronics
ST-BY : LED
Nomal
Abnomal
Nomal
Check/Replace IC901
Abnomal
2
Check I
C
Nomal
Check IC905
Abnomal
E2PROM
Abnomal
Abnomal
Check
Check IC803,
TRANS(12V)
IC802,R827,R829
2
Check F-BOX I
C
Check the oscillation of
X-Tal of IC901 pins 34, 35
Check Reset of IC901 pin 33
Nomal
Abnomal
Check 135V Line
Nomal
Check F-BOX (5V)
Nomal
Check F-BOX
HD/VD
Abnomal
Check
HIC401,Q402
Nomal
Replace F-BOX
Abnomal
Check
X901, IC904
Abnomal
Check T444S
FBT B+
Nomal
Check IC801S,
Check the Horizontal
DZ801,DZ802,
TR of HC401 "J6920"
PC801S,IC804
Check H-BLK,
V-BLK Line
Troubleshooting
5-3
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