Samsung UE37C6000 - No Sound (1.Speaker 2.Monitor_out, 3.Optical)

4-30
4. Troubleshooting
4-1-8. No Sound (1.Speaker 2.Monitor_out, 3.Optical)
Symptom
Video is normal but there is no sound.. -
Major
checkpoints
When the speaker connectors are disconnected or damaged. -
When the sound processing part of the Main Board is not functioning. -
Speaker defect. -
Diagnostics
Check the source and check the connection
of sound cable (Comp/PC/DVI to HDMI) ?
Yes
Yes
No
Input the sound source properly.
Replace speaker ?
No
Please, Contact Tech support.
Check CN3004, CN3005, CN3007.
Change the Main Assy.
Check IC2001, IC2101.
Change the Main Assy.
Check IC2001, IC2101.
Change the Main Assy.
No
No
No
Check the signal at input of Main board ?
PC, DVI R : C2023
L : C2024
SC1 AV1 R : C2025
L : C2026
COMP, AV2 R : C2029
L : C2030
Check the I2C DATA between the Audio IC’s ?
Pin #1 of IC2001 : VAL_I2STX0_MCLK
Pin #2 of IC2001 : VAL_I2STX0_LRCLK
Pin #10 of IC2001 : PCM_I2S_DATA
1. Check the Speaker sound data at ?
BD2999, BD2998 (R +/-)
BD2997, BD2996 (R +/-)
2. Check the Monitor out sound data at ?
L1302 (R)
L1301 (L)
3. Does the SODIF OUT sound data appear at ?
TP19 (VAL_SPDIF)
0
!
Yes
Yes
Yes
Change the Main Assy.
No
Check the Power of Audio codec IC ?
BD2001 : B3.3V
BD2020 : B9V
Caution Make sure to disconnect the power before working on the IP board.