Samsung 1510MP Service Manual page 18

5 Troubleshooting
5-4 No Sound
Does the input signal appear at
Pin 4, 9 of IC304?
Yes
Does the low signal at
R386, R389?
Yes
Does the output signal appear at
Pin 14, 17 of IC304?
Yes
Check related circuit of speaker.
5-4
No
Check related circuit of IC304, IC307.
No
Check related circuit of R386, R389.
No
Check related circuit of IC304.
MH15NS/MH17NS