No Power: Ldos Check Check - Sony XBR-43X830C Service Manual

3-2-6. NO POWER: LDOs check check

START
Yes
Check Vcc voltage
No
C9xxx
Is voltage >3V?
Yes
Check Enable pin
No
voltage
Is voltage >3V?
Yes
Change LDO IC
XBR-43X830C, 49X830C, 835C, 837C
Check +3.3V_MAIN DDCON (IC9003)
1.2 No Power U-Com Failure
TROUBLE SHOOTING
91