Sanyo LCD-32XR8DA - Page 25

23
2.3 Picture, but no sound
Check if NV02 pin4,
5, 32, 33 are 24V?
Check 24V powe
r
supply of powe
r
b
oard and the pat
h
b
etween XV03 an
d
N
V02 on main board
Is there sound i
n
earphone?
Is there sound whe
n
touch CV04, CV05
with probe?
Check earphone
amplify circuit
Replace
N
V02
Check the
audio outpu
t
circuit of the
main IC
no
yes
no
yes
yes
yes
no
Check if NV02
p
in10, 27 are hig
h
voltage?
If NS01 pin126, 148
are low voltage?
no
Check the pat
h
b
etween NS01 pi
n
126,148 an
d
N
V02 pin10, 27
Replace NS01