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3．Picture is normal, but no sound.
No sound
Check if voltage of
NV02-4#/5#/32#/3
3# is 24V.
No
Check 24V circuits
on power board
and power circuits
from
XV03
to
NV02
on
main
board.
Check if voltage
Yes
of NV02-10#/27#
is high level.
No
Check if voltage
of N802-143# /
227# is low level?
Yes
Check
circuits
from
N802-143#/227#
to NV02-10#/27#.
Are
there
Yes
sound
earphones?
No
Touch
CV04
and CV05 with
probe to check
No
if
there
sounds
earphones.
Check amplified
circuits of earphone
Change
N802
Yes
Change
from
NV02
Yes
Check
audio output
circuits
are
main board
from
on
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