Power Board - Hitachi 19LD4550U Service Manual

19"LCD TV

9.2 Power Board

BD901
GBU408
2 3
!
VAR901
NC
L902
L
C903
0.47uF/275V
! !
R900 R902 R901
680K OHM 1/4W 680KOHM +-5% 1/4W C923
470pF/25V
680K OHM 1/4W
F901
NR901
FUSE
NTCR
C901 C902
FG
0.001uF/250V 0.001uF/250V
! !
CN901
4.0A/250V
2 1
SOCKET
R904
C905
+ 8.2K OHM 1/4W
120uF450V
R905
8.2K OHM 1/4W
+
C919
100N 50V
ZD901
NC
IC901
1 8 D909
RT HV
2 7
COMP NC
3 6
CS VCC
4 5 LL4148
GNDOUT
LD7575A
R907 R912
10 OHM 1/8W 22 OHM 1/8W
R941
100K OHM 1% 1/8W
R922
200 OHM 1/8W
C924 D910
220pF
NC
R931
C925 NC
NC
HS2
HS1
HEAT SINK (D904)
HEAT SINK(Q901)
1
1
2
2
HS3
HEAT SINK(D906)
1
2
R918
100 OHM 1/4W C921
R919
100 OHM 1/4W
R920 0.001uF
100 OHM 1/4W
D906
SP20150R
!
2
T901
4 80TL19T 33 S
R908
C906 100K OHM 2W 8
2200pF
5
9
D901 10
FR107
6 7
2
D902 11
FR103 12
3
C908 R909 POWER X'FMR
22uF/50V
3.3 OHM 1/4W
D904
FB901
SP10100
JUMP
2
!
C914
1000uF M 16V
Q901 +
STP10NK70ZFP
C929
0.001uF
R938
10K 1/8W R935
100 OHM 1/4W
R903
100 OHM 1/4W
R934
100 OHM 1/4W
IC903
PC123X2Y FZOF
R914
0.39 OHM +-5% 2WS
R937
NC
C931
0.001uF/250V
ZD902
NC
C907
NC
FG
C900
NC
FG
T P V ( Top
絬 隔 瓜 絪 腹
Key Component
Date
96
L904
3.5uH ZD920
+ + R940 RLZ13B
C920 + C922 150 OHM 2W
470uF/25V
C917 C918 0.1uF
1000uF25V
1000uF25V R943
470 OHM +-5% 1/4W
*2 Q903
PMBS3904
C915
+
C916
470uF/16V 0.1uF
DIM
ON/OFF
+5V
L903
3.5uH
+12V
+ C930
1000uF M 16V
R924
NC R929
33K OHM 1% 1/8W
R927
3.6K OHM 1% 1/8W
R925
150R 1/8W
C912
0.022uF/25V R928
0OHM 1/8W
IC902
KIA431
R930
2.43KOHM +-1% 1/8W
Victory Electronics Co . , Ltd. ) OEM MODEL
TPV MODEL
715T2783 1B 2
02.POWER PCB NAME
Thursday , February 28, 2008 Sheet 2 of 3
Hitachi 19LD4550U
F902
+12V
JUMP
C932
0.001uF
R936
1K 1/4W
F903
+5V
JUMP
CN902
1
2
3
4
5
6
7
8
9
10
11
C927
CONN
0.1uF
A3
Size
Rev 1B
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