Sony KD-55A8F Service Manual page 39

3.4 No Sound Power On Check
Power On Check
From 2.2/3.1
*Power AU is same as PVDD
(4) POWER_AU* check
Yes
POWER_AU is supplied to
BM2A for a moment
No
before LED 3x blinking?
No
Yes
Replace G-PWB
Finish
OK ?
No
Return to 2.2
39
SYS SET