Power Does Not Turn On - Aiwa VX-T1480 Manual

(TV SECTION)

POWER DOES NOT TURN ON (1)

When turning on the
Power Switch, does the
LED light ?
Is the voltage at pin 1
of IC502 DC7.7V ?
Is the voltage at pin 3 of
IC502 DC5.6V ?
Does RY501 work ?
Check IC506, Q507 and the
peripheral circuit.
No
Yes
No
Yes
No
Yes
No
Yes
Does the BASE voltage of
Q501 turn ON or OFF ?
Yes
Check Q504, RY501 and the
peripheral circuit.
Check P.CON 5V line.
Check IC502, D511 and D512.
Check IC502.
No
Check pins 62 and 63 of IC101 and
peripheral circuit.