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Vizio VP503 FHDTV10A Service Manual page 29

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(TV, AV, S-VIDEO) IS NOT DISPLAY CORRECTLY
Start
Input signal good?
U13 input correct?
Progress "Trouble of panel
no display "process
END
CONFIDENTIAL
DO NOT COPY
N0
1. Check video
2. Check DVD player
Yes
1. Check P4 signal
N0
2. Check signal between P4 and U13 (IF AV, S-Video mode)
3. Check Tuner power at L11 is 30V DC level and L12 is 5V
Yes
DC level (IF TV mode)
Page 9-2
File No. SG-0279

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