Sony FW-43BZ35F Service Manual page 69

2023/11/28 11:28:19 (GMT+09:00)
4.5 NO PICTURE HDMI
Failure Analysis
Check impedance of Resistor,
CMF (Filter)during AC OFF
HDMI1:RB3619,RB3620,RB3611,RB3612
HDMI2:RB3613,RB3614,RB3605,RB3606
HDMI3:RB3615,RB3616,RB3607,RB3608
HDMI4:RB3617,RB3618,RB3609,RB3610
[NG] Impedance RB3613-20 ≠ 0±5Ω
[NG] Impedance RB3605-12 ≠
4.7±5Ω
Replace Broken
Resistor and Re-verify
[OK] Picture recovered
TMDS
[OK] Impedance RB3613-20
[OK] Impedance RB3605-12
[NG] No Picture
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.)
≈
0±5Ω
- TV Input Selection: HDMI
≈
4.7±5Ω
Check I2C GPIO Line impedance
to Ground during AC OFF
HDMI Connector – Pin1,3,4,6,7,9,10,12
[NG] Impedance ≠ Open (High-Z)
Internal Main IC (SoC)
Broken (IC5000)
Replace B-Board
and Re-Verify
=
[OK] Impedance Open
(High-Z)
69
SYS SET