Read LG 50PA4500-UM / 50PA450C-UM (CHASSIS:PU23A) Service Manual online
1
7
V
7
V
4-1. P_17V
C620
10uF
25V
3216
C621
0.1uF
50V
2012
17V to 3.3V
TPS54327
(3A, $0.14)
TPS54327
(3A, $0.14)
L605
2.2uH
3.5A
4.9x4.9
OP-Amp
for SC
for SC
Audio
AMP
AMP
C667
0.1uF
50V
1608
C668
68uF
35V
8PI/6.3H
Buffer for
CI_ADDR
[0:7]
CI_ADDR
[0:7]
+3.3V
C629/50
10uF
16V
→6.3V
3216
→1608
0.00586↓
change
C630
0.1uF
16V
1005
+3.3V_CI
C643
0.1uF
50V
1608
C638
C646
0.1uF
50V
1608
Audio
AMP
AMP
C627
10uF
6.3V
1608
L604
120 Ohm
2A
1608
+3.3V_TU
C614
0.1uF
16V
1005
C615
10uF
16V
→6.3V
3216
→1608
change
Tuner
3.3V to 1.8V
AP1117E18G
(850mW)
AP1117E18G
(850mW)
C631
10uF
6.3V
1608
C618
0.1uF
16V
1005
L101
120 Ohm
2A
1608
C137
0.1uF
16V
1005
Spec) 850mV↓
16mVrms
283mVpp
283mVpp
Spec) 165mV ↓
8.66mVrms
37.5mVpp
37.5mVpp
Spec) 165mV↓
23.4mVrms
166.6mVpp
166.6mVpp
Spec) 165mV↓
8.5mVrms
186.6mVpp
186.6mVpp
Spec) 90mV↓
4.6mVrms
41.6mVpp
41.6mVpp
17V to 12V
TPS54231D
(2A)
TPS54231D
(2A)
C693
10uF
25V
3225
C694
0.01uF
50V
1005
LNB
C711
10uF
16V
3216
C712
0.1uF
50V
1608
Spec) 165mV ↓
4.7mVrms
46.6mVpp
46.6mVpp
Spec) 165mV ↓
13.5mVrms
158mVpp
158mVpp
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