2) When switching the
video output mode from
480P to 720p/1080i, TV
display becomes blank
1) Supply for Up-Con
(IC3901)
2) GND for Up-Con
- Pin 7, 125
3) Check for capacitor short
to GND
1) Check digital video data
line from LSI (IC8001) to
Up-Converter (IC3901),
VOUT0-VOUT7.
- Pin 9, 124
LB3902
C3902, C3928, C3925
RX3707, RX3708
3) Color Problem. TV
screen is White/Blue/
Purple
4) HDMI got no audio
output
1) Audio data lines
2) Check setting of the set
in Setup Menu whether the
HDMI Audio output is
turned ON
R8402, RX8402
* Check for solder short
and/or component
missing/damaged as well as
signal condition.
Problems Checking Points Checking Components
131
SA-PT750P / SA-PT750PC
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