Skyworth 42E68, Instruction Manual

Page: 81 / 91

Y
Y
Y
Y
Y
O
K
O
K
O
K
O
K
O
K
O
K
N
N
N
N
N
N
N
N
N
N
N
Has audio but no video
Check
if
the
backlight
is
on
D
one
Check
the
connector
of
bac
kli
ght
inve
rter
connected
Check
the
LVDS
line
if
it
is
connected
Safely
connect
the
inverter
line
Check
the
voltage
of
in
ve
rte
rli
ne
is
24V
D
one
Y
Y
Y
N
N
N
Check
the
“ON/OFF”
voltage
on
“C
N
2
”,
sh
ould
be
greater
than
2.7V
Chec
k
“Q
28
”
&
“U
101
”
Pin
B10
&B12
if
it w
orks
we
ll.
C
ha
nge
the
panel.
D
on
e
Upgrade
the
software
C
han
ge
the
“Q
3”
or
“U11”
Change
the
“U
101
”
D
on
e
D
on
e
D
one
Upgrade
the
software
D
one
Safely
connect
the
LVDS
line
Make
sure
the
LVDS
power
is
correct
(5V
for
24”
,12V
for
32
)
D
on
e
Change
the
Flash U100
D
on
e
Correct
the
powe
r
Chan
e
th
e
main
IC
U
101
Don
e
Change
the
m
ain
boa
rd
Don
e
Don
e
Se
rvi
ce F
lo
w C
har
t
-
51
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