Vizio SV420M Service Manual page 26

(TV_SIDE, AUDIO) IS NOT DISPLAY CORRECTLY
Start
Input signal good?
Input correct?
Check signal correct?
Check amplifier OK?
END
CONFIDENTIAL DO NOT COPY
–
Yes
N0
Yes
Yes
N0
Yes
N0
N0
1. Check Audio source
2. Check the player of source
1. Check signal of Main Board
2. Check amplifier (J11)
1. Check MT5392 audio out ,R604 &
R605
1. Check 12V of U40.
Page 9-7
File No. SG-0298