Samsung CK331EZR4X/BWT Service Manual page 38

Troubleshooting
5-4 No Sound (Video OK)
5-5 No TTX
5-4
Check IC201
No
Pin 15 (Sound Out)
Yes
Yes
Check IC602
Pins 1,7 (0V)
No
Check IC602
No
Pin 4 (B+ 10-12.5V)
Yes
No
Check IC602
Yes
Check/Replace
A/V Front assembly.
Yes
Check IC901
Pins 24
No
Check IC901
No
Pin 31,32,33,34,35
Yes
Check IC201
No
Pin 23, 24, 25, 26
Yes
See No Video
Check/Replace
IC201
Check/Replace
Q903, Q907
Check/Replace
R812, R813
Check/Replace
IC602
Check/Replace
QT02, IC901
Check/Replace
IC901
Check/Replace
IC201
Samsung Electronics