Skyworth 8M26S, Service Manual

Page: 46 / 57

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Y Y
Y
Y
Y
Y
Y
N
N
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N
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N
N
N
Y
Y
Y
Y
Y
Y
N
N
N
N
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N
N
Y
N
No
audio
&
No
backli
g
ht
Led
indicator
“red” on
Check
the 5V
STB on “CON8”
Press
the
“ON/OFF”
on
key
boar
d
&
re
m
o
te
control
,
led
turns
g
reen
Check
the
AC input on
p
ower
su
pp
ly
boar
d
Upgrade
the
so
ftware
Change
the
AC
line
Check
the
fuse
on
power
supply
board
Done
Change
the
fu
se
Change
the
power
supply
b
oar
d
Done
Done
Upgrade
the
software
Check
the
5V
,
12V
&
24V
on
p
ower
su
pp
ly
board
Change
the
power
supply
b
oar
d
Check
the
“ON/OFF”
voltage
on
“CON8”,
sh
ould
be
greater
than
2.7V
Check
“Q3”
&
“U41” Pin81 if
it works
well.
Cha
nge
the
panel.
Done
Upgrade
the
software
Change
the
“Q
3”
or
“U9”
Change
the
“U41”
Done
Done
Done
Done
Upgrade
the
software
Done
Done
Change
the
EEPROM U43
“A
TMEL
24C64”
Done
Done
Check
all
DC
power
su
pp
ly
on
U41
Chang
the
power
su
pp
ly
IC
for
U9
Change
the
Main
IC
“U9”
Change
the
Main
b
oard
Done
Done
Done
Service Flow Chart
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