Samsung 910MP - No Sound (VIDEO,S-VIDEO,SCART) Issues

5 Troubleshooting
5-6
Does a signal appear at
C740(VIDEO)/,C742,C744
(S-VIDEO)C741(SCART)?
Check CN506, CN508, CN713.
Yes
No
Does a signal appear at
R563, R566?
Check related circuit IC700.
Yes
No
Does a signal appear at
Pin5,2,19,16 of IC55
(SL/SROUT)?
Check related circuit IC55.
Yes
No
Check the Speaker L/R.
5-6 No Sound(VIDEO,S-VIDEO,SCART)