Toshiba TW40F80 - Manual (Page 31)

31
14. TROUBLESHOOTING CHART
14-1. TV does Not Turned ON
TV does not turned on.
Relay sound
Check of voltage at pin 7 of QA01
(DC 5V).
8MHz oscillation waveform
at pin 32 of QA01.
Pulse output at pins 37 and 38 of QA01.
Check relay driving circuit.
Check power circuit.
Check OSC circuit.
Replace QA01.
Voltage check at pin 32 of QA01
(DC 5V)
Check reset circuit.
Replace QA01.
YES
NG
NG
NG
NG
OK
NO
OK
OK
OK