Sharp LC-20AD5E-BK

TROUBLESHOOTING GUIDE
POWER DOES NOT TUNER ON
Is F501 broken?
Is there voltage at pin
10 of IC501 at 18.9V?
Is there voltage at pin
2 of IC503 at 5V?
Change F501.
Check IC501 and peripheral
circuit.
Change MAIN PCB.
No
Yes
Check IC503 and peripheral
circuit. Or change IC503.
No
No
Yes
Yes
E-1