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3.2. Raster, but no picture
Check if the unit button
and
remote
control
operation?
no
Replace
no
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 TUNER1
yes
OSD
Check if the all channels
yes
have no signal?
Which is no signal
of channels
Check if 1VPP signal
yes
and noise wave of
XB201 11# on the TV
board?
Check if output IF
no
signal of TUNER1
(pin 11) is normal?
Check IF(NZ100)
and its periphery
19
no
HDMI/VGA/YPRPB
TV
Replace
main board
no
yes
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