Sony GN3UN - +5 V Power Failure Analysis

3f.7.3+5V Power Failure Analysis – General Checking
3f.7.3 +5V Power Failure Analysis
+5V Power
Failure Analysis
Check impedance of
Varistor during AC OFF
HDMI1: VR4007
HDMI2: VR4006
[OK] Impedance
≈ 59kΩ ±5%
[NG] Impedance ≠ 59kΩ
END
Go to
“HPD Power Failure Analysis“
Page
Replace Broken Varistor
and Re-verify
[OK] Picture recovered
Checking condition:
- 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
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