Sanyo LCD-46XZ10FH Service Manual page 26

3．There is picture but no sound.
No sound
Check if the voltage
of NV02-4/5/32/33#
is 24V ?
Check 24V power
circuits on power board and
power supply circuits from
XV03 to NV02 on main board
are normal ?
Check if the voltage
Yes
of
high level ?
No
Check
supply
voltage
NS01-F16/H16#
is low level?
Yes
Check if circuits from
NS01-F6/H16# to
NV02-10/27#
normal?
Yes
NV02-10/27# is
No
if the
of
No
are
Change
another
NS01
Check if
there is
Yes
sound from
earphones?
No
Touch CV04
and CV05
with probe,
Yes
check if there
is sound from
earphones?
No
Check if circuits
about earphone
amplifier are
normal ?
Change
another
NV02
Check if
audio
output
circuits
of main
chip are
normal?