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1. No picture. No sound. Backlight not light.
Power on to check Power supply audion B 1204 E pole +12V(Yes/No)
Press Power to check C pole 12V output(Yes /
No)
Yes
Check
high
voltage
Surge circuit and
signal
manage
circuit
Check 1204 front
controll
periphery parts
Check and change IC 37160 and
IC 24C08 etc periphery parts
AKAI ACL-701 servicing map
Yes
No
Check IC 37160 29 footsie
+5V (Yes/No)
Yes
Check
regularly(Yes/No)
audion
Yes
Check fuse +12 V output (Yes / No)
Yes
Check and change Power
polarity diode and power
on
No
Power
Check and change Power
supply
transformer
POWER supply
No
No
No
Check Power Jack,
fuse and unit current
more than 1.5 A
Yes
parts
such
as
and
every
No
Change fuse
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