+5V Power Failure Analysis – Hdmi2 General Checking - Sony KD-43XE7 Series Service Manual

3.7.3 +5V Power Failure Analysis – HDMI2 General Checking
[OK] Impedance ≈ 22 Ω
[NG] Impedance ≠ Open (High Z)
[OK] Picture recovered
+5V Power
Failure Analysis
[NG] Impedance ≠ 22 Ω
Check impedance of
Resistor during AC OFF
HDMI2: R4044
[NG] No picture
Check impedance of
[OK] Impedance ≈ Open (High
Varistor during AC OFF
Z)
HDMI2: VR4011
Replace Broken Varistor
and Re-verify
END
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
Replace Broken Resistor
and Re-verify
Go to
"HPD Power Failure
Page
[NG] No picture
[OK] Picture recovered
Analysis"
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