No Sound (1. Speaker, 2. Monitor_Out, 3. Optical) - Samsung UN FH6200F Series Service Manual

4. Troubleshooting

4-2-7. No Sound (1. Speaker, 2. Monitor_out, 3. Optical)

Symptom Video is normal but there is no sound.
• When the speaker connectors are disconnected or damaged.
Major
• When the sound processing part of the Main Board is not functioning.
checkpoints
• Speaker defect.
Check the DATA between the Audio IC's ?
1
Diagnostics
1. Check the Speaker sound data appear
2. Check the Monitor out sound data
2
3. Does the SODIF OUT sound data
Caution
Make sure to disconnect the power before working on the IP board.
4-22
Check the source and check the
connection of sound cable ?
Comp, PC/DVI to HDMI
Yes
Check the signal at input of Main Board?
AV, COMP R : R527 / L : R526
PC R : R422 / L : R421
Yes
Pin #15 of IC301 : Mclk
Pin #20 of IC301 : LRclk
Pin #22, #23 of IC301 : I2C_DA/CL
Yes
at ? CN301
appear at ? CN302
appear at ? CN303
Yes
Replace speaker ?
No Input the sound source properly.
Check CN502, CN402.
No
Change the Main Ass'y.
Check IC301.
No
Change the Main Ass'y.
Check IC301.
No
Change the Main Ass'y.
No Please, Contact Tech support.