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No sound, but picture is normal:
3．
No sound
Check if levels
of
N607-PIN3&13
are 12V?
No
Check 12V of
power
board
and
power
supply
circuits
from X601 to
X607 on main
board.
Yes
Check if levels of
N607-PIN6&7are
all high?
No
Check if levels
of V615-b# and
V607-b#
are
both low.
Yes
Replace V615、
V607
Yes
Check if there
is sound from
speakers?
Touch
and CV05 with
probe, check if
No
there is sound
from
earphones.
Check
earphone
amplifier
circuits
Replace N101
Yes
Replace
X607
No
Yes
CV04
Check
main
chip
audio
output
circuits.
No
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