Samsung CFT27908X/SMS Service Manual page 31

5-3 No Sound
Normal
Check the Speaker
Wire Connection
Samsung Electronics
No Sound, but Picture is
in normal operation
Check the CN602
Connection and Signal
(If the pin is in low state,
Sound is mute)
IC601 #24, #25
IC601 Input
Voltages (5V,8V)
IC601 Input Signal
Abnormal
Normal
Check
14V Line
Check
IC602 #7
Abnormal
Normal
D816, Q906
Check
Abnormal
Normal
Check
Abnormal
Normal
the coils around IC601
Check
Abnormal
Normal
Replace
the Tuner
IC601
Troubleshooting
Abnormal
Check
FA803S
Check
Replace
IC602
Check
Check
5-3