Samsung UN F5500AF Series, Service Manual

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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.
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) ?
No Input the sound source properly.
Yes
Check the signal at input of Main board?
AV, COMP L/R : RA503
No
Check CN502.
Change the Main Assy.
Yes
1
Check the DATA between the Audio IC’s ?
Pin #15 of IC301 : Bclk
Pin #20 of IC301 : LRclk
Pin #23,#24 of IC301 : I2C_SDA/SCL
No
Check IC301.
Change the Main Assy.
Yes
2
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
No
Check IC301.
Change the Main Assy.
Yes
Replace speaker ?
No
Please, Contact Tech support.
Caution Make sure to disconnect the power before working on the IP board.
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4. Troubleshooting