Samsung LT22A13W Service Manual page 26

5 Troubleshooting
5-5 No Sound
Does the signal appear at
P24(SIF) in CN714 and P2,
P3(AV_R,L), P5, P18(comp1_L,R),
5-1
P20, P21(comp2_L,R), P23,
P24(PC_L,R) in CN715?
Yes
Does the signal appear at
P67(Tuner) and P47, P48(PC) and
5-2
P56, P57(VCR) and P53, P54(DVD)
and P50, P51(DTV) in IC919?
Yes
Does the signal appear at
5-3
L501~L504?
Yes
Replace the speaker.
LT22A13W
Check CN714 and
No
FFC(BN41-00240A) cable.
Check CN715 and
FFC(3809-001407) cable.
IC919 are bad.
No
Change main PCB assy.
(BN94-00397A)
IC501 is bad.
No
Change main PCB assy.
(BN94-00397A)
CONFIDENTIAL
5-9