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2
2. Ra
2. Raster, but no picture
ster, but no picture
Check if the unit button
and
remote
control
operation?
no
no
Replace
main board
Does
display
yes
menu in screen when
press menu button?
no
Enter
factory-menu,
initialization EEPROM,
then turn off the TV,
turn on again, display
picture?
yes
Adjust main board
again
Replace TUNER
yes
OSD
Check if there is no
yes
signal in all channels?
no
Which is no signal
of channels?
TV
Check if 2VPP signal
ye
yes
and
and noise wave of
d
no
se
N101(PIN7) on the
main board?
no
Check if output
no
IF
signal
TUNER (pin11)
is normal?
yes
Check IF circuit
(N101)
19
HDMI/VGA/YPRPB
Replace
main board
w
wav
e
of
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