Sony KD-55A9F - No Power U-Com Failure

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1.2 No Power u-com Failure
BM3 Board OLED Model
P-on u-com
IC800
DDCs : 0.9V_BE (IC6602 on DPJ), 0.8V_BE (IC6604 on DPJ)
DDC : 1.0V_M3_CORE (IC608), 1.0V_M3_CPU (IC609),
1.0V_M_GPU (IC610)
DDCs : 5V_MAIN (IC402), 3.3V_MAIN (IC403/IC804 on DPJ),
1.8V_TU (IC405), 1.05V_M3_A (IC604),
1.5V_BE (IC6601 on DPJ), +1.1V_BE (IC4002 on DPJ)
LDOs : 1.2V_HDMI (IC400), 1.8V_BE (IC 6600 on DPJ)
DDR VTT/Vref Generator : IC1800
SOC Muffin 3 (IC1000)
P_ON_#1
PGOOD_1
P_ON_#2
OPWRSB
GND
R813
#pin2
#pin14
#pin3
#pin9
#pin1
2
#pin13
#pin10
#pin6
Vdd u-com
supply
voltage
+3.3V_STBY
POWER_ON
ORESETB
X_SYSTEM_RST
#pin20
Tuner (CN3000 #62pin)
#pin7
BL_ON
DC_OFF_DET
#pin18
P_ON_HL
FET SW : 12V_LNB (Q408/Q409)
USB VBUS SW (IC4602)
#pin11
DC_MON
ADC port
SOC Muffin 3 (IC1000)
#pin8
OPCTRL4 (BL_MUTE)
G-Board
+12V_MAIN
GND
R818
#pin16
12V_MON
ADC port
R805
BM3 or DPJ
DPJ-Board (IC802)
R806/Q80
1
AC_OFF_DET_OUT
from SOC BE (IC7000)
on DPJ
SYSSET
2018/09/1904:47:37(GMT+09:00)