Sony KD-55A8F - SECTION 3 TROUBLESHOOTING; Triage Chart

Before you make the service call…
1. Confirm the symptom from the customer.
2. Select that symptom from the chart.
3. Bring all the boards and cables listed for that symptom.
4. Follow the troubleshooting charts in the technical guides to isolate the board.
5.
Chart Colour Code
RED DOT: Most likely defective part
BLUE TRIANGLE: Secondary possible defective part
BLACK TEXT: Board that may correct the symptom
Triage Chart
SECTION 3
TROUBLESHOOTING
14
Reference
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
Symptoms - no shutdown
Error log record only
No
Power
Video
- missing or distorted
Remote Network Audio Smart Core Bluetooth (BT)
2 3 4 5 6 7 8
TU_
DEM
OD
TCO
N_E
RR
FRCT
C_I2
C
AUD
_ER
R_I2
C
4KPQ_ERR_
I2C
No White Power
LED & does not
reponse to
remote (Dead
Set)
Stationary
colored
lines or
dots
No video
One of
Inputs
NO RF
input
No video
all Inputs
No Remote
Wireless
can't connect
No Audio
Smart Core no LED
(Set is still alive)
Bluetooth / Voice
Remote can't
connect
B* Board



















G* Board








H* Board



Actuater
(Panel module)


Speaker
(Sub woofer)


Wifi & BT
Module


V By One FFC



Tcon
(Panel module)





OLED Panel
(Panel module)





Problem
Power Power Tcon
Panel
(Communication)
Panel
Power
TEMP 4KBE
Audio
SYSSET
2018/03/1622:32:44(GMT+09:00)