Vizio SV472XVT Service Manual page 29

TROUBLE OF EDID READING
Start
Is Analog DDC OK?
End
CONFIDENTIAL – DO NOT COPY
N0
Yes
Support DDC1/2B
1. Analog cable ok?
2 .Check signal (U33 to P5)
3. Check U33 Voltage
4. Is protocol compliant?
Page 9-6
File No. SG-0325