Skyworth 8M26S, Service Manual

Page: 48 / 57

N
N
N
N
N
N
N
N
N
OK
OK
OK
OK
OK
OK
OK
Y
Y
N
N
Y
Y
N
N
OK
OK
Has video but no colo
r
Check
the
Color
/
Saturation
in
picture
m
enu
if it
has
decreased
to
“0”
Increase
the
ite
m
to
default
“50”
Check
the
cable
input
if
it
has
exactl
y
connected
W
ell
connect
the cable
Check
the
cur
rent
input
source
if
it
is
TV
Done
Change
the
m
ain
IC
“U41”
Adjust
AGC
follow
the
workin
gg
uide.
Change
the
m
ainboar
d
Done
Done
Done
Check
the DC power
su
pp
ly
of the
tuner
.
Done
Fix
the DC supply
Check
the Q29 & U25
circuit
Check
the Q29 & U25
circuit
Done
C
h
an
g
e
th
e
Q29 & U25
Done
Done
Change
the
m
ainboar
d
Change
the
tuner
Done
Change
the
m
ainboard
Done
Done
Service Flow Chart
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