Read Sony KDL-60W840B / KDL-60W850B / KDL-60W855B / KDL-60W857B / KDL-60W858B / KDL-70W830B / KDL-70W840B / KDL-70W850B / KDL-70W855B / KDL-70W856B / KDL-70W857B Service Manual online
RB2G
CHASSIS
W830B/ W840B/ W850B/ W855B
W856B/ W857B
SECTION 3
TROUBLESHOOTING
Troubleshooting
3-1. NO POWER
3-1-1. NO POWER
3-1-2. NO POWER – AYU2/AYU2L failure
No Power
AYU2/L Fail Suspected
Check STBY 3.3V
L9107 or C9179
G2B Board
Replace
Between G2B Board to
BAXL Board Harness
NG
NG
OK
eMMC /
RawNAND erase
Product SW rewrite
Harness
OK
No
Product SW rewrite
Recover?
Product SW
writing issue
Yes
BAXL Board
Replace BAXL Board
No
Parts
Board PWB (BAXL- A side)
Detail
Parts
Board PWB (BAXL A side)
Detail
(L9107)
1
L9107
L9107
11
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