Sony KD-43X85K Service Manual page 66

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TROUBLESHOOTING
4.4 No Picture at Tuner - Tuner Power Lines: 3.3V, 12.0V, 1.0V
BM5A22 Tuner portion(Bottom View)
12V
C3028
+12V_LNB Voltage Checking
BM5A Top View
R643
Q604
BM5A Tuner portion(Top View)
1.0V Voltage Checking
FB3103
BM5A Tuner portion(Bottom View)
3.3V
JL3019 = 3.3V
3.3V Voltage Checking
FB3102
66
SYS SET

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