Sony GN1G Service Manual page 41

3-2-4. NO Power (DC/DC converter check)
e) 1.05V LDO check
KDL-50W800C, 805C, 807C, 809C/KDL-55W800C, 805C
START
Check fuse
No
F9014
Is fuse OK?
Yes
Check input
No
F9014 voltage
Is voltage >3.3V?
Yes
Check EN signal
No
IC9022 #pin4
Is voltage >2.5V?
Yes
Change IC9022
Change F9014
Check 3.3V DDCON
Refer No Power U-Com Failure
TROUBLE SHOOTING
41