Check i
f
the po
w
er cord
connect
w
ell?
Po
w
er on
a
nd check i
f
5
V
st
a
ndby on the
Po
w
er bo
a
rd exists ?
Check i
f
there is hi
g
h
level (
2
.5
V
-5.0
V
)
a
t
Pin
2
in J7
Check J3 volt
ag
e o
f
1
2
a
nd J8 o
f
5
No
No
Y
es
Y
es
Repl
a
ce D811
Repl
a
ce U11
Ho
w
to kno
w
w
hether the Po
w
er bo
a
rd is broken?
S
till h
a
vin
g
proble
m
s
Check i
f
M
a
in bo
a
rd / L
V
D
S
w
ire / P
a
nel
a
re
in
g
ood condition ?
No
Reconnect the po
w
er cord
w
ith
the outlet or Po
w
er bo
a
rd.
Y
es
No
Check i
f
the bre
a
k in the po
w
er
circuit
Repl
a
ce
Q
806 or
Q
809
No
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