SA-PT350E, SA-PT350EB, SA-PT350EG - Panasonic Audio Service Manual (repair manual). Page 121

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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
121
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