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AV-20FD24
(TV SECTION)
POWER DOES NOT TURN ON (1)
When turning on the
power switch, does the
LED light ?
Yes
Is the signal at
pin 23 of IC601
normal?
Yes
Check +B line?
Yes
Is the heater of CRT
lighted?
Yes
Check IC601 and peripheral circuit.
30
No
Is the voltage at pin 28 of
IC101 of 5.0V?
Yes
Check IC101 and
peripheral circuit.
No
No
No
No. 52133
No
Check AT5V line and
peripheral circuit.
Check the IC601 and
peripheral circuit.
Check Q401, Q405, Q406
and peripheral circuit.
Check CRT TUBE and heater circuit.
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