POWER DOES NOT TUNER ON
Is F501 broken?
No
Is there voltage at pin
4 of IC501 at 18.9V?
Yes
Is there voltage at pin
2 of IC504 at 3.3V?
Yes
Change AV PCB.
TROUBLESHOOTING GUIDE
Yes
No
No
E-1
Change F501.
Check IC501 and peripheral
circuit.
Check IC504 and peripheral
circuit. Or change IC504.