No Power; Flow - Sony X900E Series Service Manual

FLOW

1-1. NO POWER

WITH G* BOARD
No Power
Check STBY 3.3V
NG
C518
near CN400
on B* board
OK
B* board
XBR-49/55/65/75X900E
NG
Replace
Between G* board to
B* board Harness
OK
Harness
u-Com Failure
DDCON/LDO
Main Device Failure
G* board
TROUBLE SHOOTING
19