Prima PS-32HU35S, Service Manual

Page: 25 / 35

23
2.2. Raster, but no picture
Check if the unit button
and remote control
operation?
Check if all channels
have no signal?
Replace
main board
Enter factory-menu,
initialization EEPROM,
then turn off the TV,
turn on again, display
picture?
Adjust main board
again
Which is no signal
of channels
Replace
main board
Check if 1VPP signal
and noise wave of
TP1 on the TV
board?
Check if output
IF signal of
TUNER101 (pin
11) is normal?
Check TUNER101
and its periphery
Check N3 and its
periphery
no
yes
yes
VGA/SCART(CVBS)/HDMI
TV
yes
no
no
no
yes
Does display OSD
menu in screen when
press menu button?
yes
no
yes
no
Check if NB24
output signal?
Replace
main board
Replace
NB24
YPRPB/SCART(RGB)
no
yes