ChangeMainboard
Stillhavingproblems
S
ervice M
a
nu
a
l
Model No.:
- 28 -
No
Yes
AV
No sound but h
a
ve picture
Chec
k
i
f
there is sound input si
g
n
a
l
Chec
k
the input source
Yes
No
Chec
k
i
f
there is si
g
n
a
l
a
t C
6
01
a
nd C
6
02
Chec
k
i
f
there is si
g
n
a
l
a
t C
2
20
a
nd C
2
21
No
Yes
Chec
k
i
f
there is si
g
n
a
l
a
t FB11,FB12,FB13,FB14
Ch
a
n
g
e U
2
02
Chec
k
the spe
ak
ers
Yes
Ch
a
n
g
e UD3
Chec
k
LD3 volt
ag
e
12V
LD3
Else
