Samsung LW29A13W Service Manual page 18

5 Troubleshooting
5-6 No Sound (LW40A13W)
Does the Low signal at
Pin 16 and of IC13?
Yes
Does the Low signal at
Pin 17 of IC13
Yes
Check Pin 50, 52
(QSS_IF), Pin 44, 45 (RCA),
Pin 41, 42 (Scart1_In),
Pin 38, 39 (Scart1_In) of IC18?
Yes
Does the Digital signal at
Pin 8, 9 and 10 of IC15?
Yes
Check IC15 and realted IC15.
LW29A13W/LW40A13W
No
Check Pin 1 of CN624.
No
Replace IC13.
No
Check CN629.
No
Check IC18 and related IC18?
CONFIDENTIAL
5-5