LG UBK80 Service Manual page 46

NO POWER PROBLEM
No power problem occurs when you power on the unit.
1-3. No 12 VA (Secondary side)
1-3-1. Solution
Replace D105, CE104, CE105 on SMPS board
1-3-2. How to troubleshoot (Countermeasure)
1) Check D105 and replace it.
2) Check CE104, CE105 and replace it.
1-3-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
Secondary
EMC
C120
10
N4:8T/TIW-M
&U 0.32x2
9
N5:8T/TIW-M
&U 0.32x2
20x14,18.3
7
6
T101
_NC
D105
< SMPS board top view >
_NC
470pF
<Refer>
3 100nF(0.1u) 0CH1104K566
10nF(0.01uF) 0CH1103K566
D105
1nF(0.001uF) 0CH4102K416
2
1
U102
DGND
CE104
CE105
3-29
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