Led Blinking 4X (Led Voltage Error); Led Blinking 5X (T-Con Error) - Sony KDL-40W900A Service Manual

Troubleshooting

3-2-4. LED Blinking 4x (LED Voltage Error)

4-times blinking
Between 0.98V to 1.23V Between 0 98V to 1 23V
Check JL9112
(BACKLIGHT_MON)
on the B* Board
B* Board
For Ayu2(IC9000) replacement check related section
LED driver
Size
40"
46"
55"
3-2-5. LED Blinking 5x (T-Con Error) (HG and TE Model)
5-times blinking
Check PANEL_VCC
NG
12.5V at pin 47-51 of
CN8001 on
on the B* Board
About 12.5V OK
Symptom
improvement
Replace the Harness
Between G* and Panel
NG
Symptom
improvement
Replace
the LVDS Harness
NG
B* Board Type G* Board
Type
OTHERS JP
BA2-S BA2-W G1A
BA2-S BA2-W G1A
BA2-S BA2-W G1B
Panel (T-con)
change
G* Board
Symptom
improvement
Panel (T-con)
Harness
LVDS Harness
RB1G CHASSIS
W900A/904A/905A
NG
B* Board
Confirm Tcon12V.
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