Aiwa HV-FX4100k Service Manual page 24

POWER DOES NOT TURN ON
Does DISPLAY light ?
Yes
Is the voltage at pin 20 of
IC1002 about 5V ?
Yes
Is the voltage at base of
Q502 about 5V ?
Yes
Replace Q502.
TROUBLESHOOTING GUIDE TROUBLESHOOTING GUIDE
No
Is F501 broken ?
Is the voltage at collector
of Q507 about 5.6V ?
Check the peripheral circuit to
pin 14 of T501.
No
No
E-1
Yes
No
Yes
No
Replace F501.
Check IC1002.
Check IC1002.
Replace Q510.