Sony KDL-43W6 G Series Service Manual page 73

2019/01/30 02:46:26 (GMT+09:00)
6.7.3 +5V Power Failure Analysis
Checking condition:
6.7.3+5V Power Failure Analysis – General Checking
- TV ON & HDMI Source ON except if the flow mentioned is AC
OFF.
- TV HDMI input connected to HDMI source (Player etc.)
- TV Input Selection: HDMI
+5V Power
Failure Analysis
[OK] VR4007/4006 ≈ 59kΩ ±5%
Check impedance of Resistor,
R4020/4021 = 0Ω Go to
Varistor during AC OFF
"HPD Power Failure Analysis"
HDMI1: R4020, VR4007
Page
HDMI2: R4021, VR4006
[NG] VR4007/4006 ≠ 59kΩ ±5%
R4020/4021 ≠ 0Ω
Replace broken varistor
and Re-verify
[OK] Picture recovered
END
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SYS SET