Page 1
Troubleshooting
Samsung Electronics 5-1
5. Troubleshooting
5-1 No Raster
Abnormal
Check VIN(DC)
TS801S PIN 13
Abnormal
Check
FA803S
GND SHORT
Abnormal
Check ST5V
Q804 "E"
Normal
Check ST5V
HC801"D809"
Abnormal
Normal
Normal
Check
FA801S
Check
B+(135V)
Check
ST-BY
MICOM
Abnormal
Check
NormalNormal
Normal
Check ON/OFF
IC903 ; 3.3V
F-BOX 5V, 9V
Check
Normal
Check
MICOM
Abnormal
Check9V:R829, IC803
5V:R827, FA802S
Check
HC401 J6920
Normal
Check
DZ801,DZ802,
DZ803,IC804
Check
Vin(dc)T801S
Abnormal
Check
FP801S
Check
CRT ASSY
R529
Normal
F-BOX I C
Check
Check
F-BOX HD,VD
Abnormal
Check HIC401
Q402
REPLACE
F-BOX
Check
H-BLK
V-BLK
Page 2
5-2 No Sound
Troubleshooting
5-2 Samsung Electronics
NO SOUND
Check
SPEAKER and WIRE
Check
TUNER B+ and SIF
Normal
Abnormal
Check the
signal of CN601
Abnormal
Check the
input signal
of IC601
Normal
Check
IC601 B+
Normal
Check the signals
of pins 47,44,are input
Normal
Check the signals
of pins 25,24 are input
Normal
Abnormal
Check the
input signal
of IC602 pins 7,11
Abnormal
CheckB+(BV) LINE
R815, IC805, FA802S
Normal
Check
IC602 B+
Normal
Replace IC602
Abnormal
Check FA803S
Repace IC601
Page 3
Troubleshooting
Samsung Electronics 5-3
5-3 No Power
Plug in the
Power Cord
Check Power LED
Abnomal
Check IC901 B+
(3.3VDD)
Abnomal
Check Q804
Abnomal
HC801S
FA801S
FA802S
Abnomal
Check
CN901, CN902
ST-BY : LED
Nomal
Nomal
Check/Replace IC901
Nomal
Check IC905
Check
TRANS(12V)
2
Check I
C
E2PROM
Abnomal
Check IC803,
IC802,R827,R829
Check the oscillation of
X-Tal of IC901 pins 34, 35
Check Reset of IC901 pin 33
Nomal
Check 135V Line
Nomal
Check F-BOX (5V)
Nomal
Check F-BOX
HD/VD
Abnomal
Abnomal
Check T444S
FBT B+
Nomal
Check IC801S,
DZ801,DZ802,
PC801S,IC804
Check
X901, IC904
Abnomal
Check the Horizontal
TR of HC401 "J6920"
Abnomal
Check F-BOX I
2
C
Check
HIC401,Q402
Nomal
Replace F-BOX
Check H-BLK,
V-BLK Line
Page 4
5-4 Samsung Electronics
5-4 Horizontal Lines Appear
Troubleshooting
Horizontal
lines appear
Nomal
Check / Replace
IC301
Nomal
Check F-BOX B+
VD+, VD-
Abnomal
Check IC802,IC803,
HC801,FA801S,FA803S
Check IC301 B+
(16V, -13.5V)
Abnomal
Check B+ line and
fusible resistance
Abnomal
Replace R424, R425
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