No Sound (1.Speaker 2.Monitor_Out 3.Optical) - Samsung UE40F6320AW Service Manual

4. Troubleshooting

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

Note
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
Symptom
Major
checkpoints
Diagnostics
Caution
4-22
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• Video is normal but there is no sound.
• When the speaker connectors are disconnected or damaged.
• When the sound processing part of the Main Board is not functioning.
• Speaker defect.
Check the source and check the
connection of sound cable ?
COMP
Yes
Check the signal at input of Main Board?
AV, COMP L/R : RA503
Yes
Check the DATA between the Audio IC's ?
Pin #15 of IC301 : B clk
-
1 Pin #20 of IC301 : LR clk
-
Pin #23, #24 of IC301 : I2C_SDA/
-
SCL
Yes
1. Check the Speaker sound data at ?
CN302
-
2. Check the Monitor out sound data at ?
2
CN303_IBR
-
3. Does the SODIF OUT sound data
appear at ?
OP301
-
Yes
Replace speaker ?
Make sure to disconnect the power before working on the IP Board.
manuals search engine
No Input the sound source properly.
Check CN502.
No
Change the Main Ass'y.
Check IC301.
No
Change the Main Ass'y.
No Change the Main Ass'y.
No Please, Contact Tech support.