Sony KD-43X7 G Series Service Manual page 63

2.6.14 HDMI No Picture
2.6.14.2 +5V Power Failure Analysis – HDMI1 and HDMI3
[OK] Impedance ≈ 1K Ω
[NG] Impedance ≠ 100kΩ ±5%
[OK] Picture recovered
+5V Power
Failure Analysis
[NG] Impedance ≠ 1K Ω
Check impedance of
Resistor during AC OFF
HDMI1: R4025
HDMI3: R4024
Check impedance of
Varistor during AC OFF
HDMI1: VR4010
HDMI3: VR4009
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
[NG] No picture
[OK] Impedance ≈ 100kΩ ±5%
[NG] No picture
[OK] Picture recovered
Go to
"HPD Power Failure Analysis"
Page
63
SYS SET