Samsung PN50A650T1FXZC Service Manual page 24

Troubleshooting
■ No Sound
Symptom - Video is normal but there is no sound.
- When the speaker connectors are disconnected or damaged.
Major Checklist - When the sound processing part of the Main Board is not functioning.
- Speaker defect.
Troubleshooting
Procedures
4-4
3
①
Is the cable connection between the Main
Board and the speaker properly connected?
Yes
②
Check that the voltage of No.7,8 pin of
SMPS CN801 has 12V
Yes
Is the speaker output terminal of the Main
Board normal?
Yes
③
Replace the Speaker
No
Cable Connection
No
Replace the SMPS
No
Replace the Main Board
2
1
3
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