No Sound (1.Speaker 2.Monitor_Out, 3.Optical)_X12 - Samsung UA32F45 Series Service Manual

4. Troubleshooting

No Sound (1.Speaker 2.Monitor_out, 3.Optical)_X12

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*Refer to the next page to check the lacation such a CN201 or IC201 SVC Manual mentioned.
• Video is normal but there is no sound.
Symptom
• 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
2
Caution Make sure to disconnect the power before working on the IP board.
4-18
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
Pin #15 of IC301 : Bclk
Pin #20 of IC301 : LRclk
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
CN303_IBR
3. Does the SODIF OUT sound data
appear at ? OP301
Yes
Replace speaker ?
No Input the sound source properly.
Check CN502.
No
Change the Main Assy.
Check IC301.
No
Change the Main Assy.
Check IC301.
No
Change the Main Assy.
No Please, Contact Tech support.