Samsung RE23EO Service Manual page 48

5 Troubleshooting
5-7 No Sound
Picture is display, no sound.
Yes
Does the signal appear at
Pin 51, 50(CH1_L, R Sound)
7
and Pin 57, 58
(CH2_L, R Sound)
of IC610 (MSP4410K)?
Yes
Check the DC 8V
8
of IC610?
Yes
Does the signal appear at
9
L617?
Yes
Replace the speaker ass'y?
5-12
No
Connect a sound cable.
control a volume.
No
Check a connection harness and
headphone jack.
No
Check a IC813.
Change a main PCB ass'y.
No
Check a IC611.
Change a main PCB ass'y.