Samsung NK15S series Service Manual page 20

5 Troubleshooting
5-4 No Sound
Does the signal appear at
Pin 67 (Tuner sound signal) and Pin
47, 48 (PC sound) and Pin 56, 57
(DTV sound) and Pin 53, 54 (DVD
sound) Pin 50, 51 (VCR) of
IC 919 (MSP3451)?
Yes
Does the signal appear at Pin 27,
28 of IC919 (MSP3451)?
Yes
Does the signal appear
at L501 ~L504?
Yes
Replace the speaker.
LS15N13W/LS17N13W
Check the CN403 (PC conector) and the
No
CN407, CN408, CN412, 413 and the
CN200 (CN002) and the CN888 (Tuner)
and the CN702_1.
No
Check the IC919 and
related circuit of IC919.
No
Check the IC501 (Audio amp) and
related circuit of IC501.
CONFIDENTIAL
5-5