Troubleshooting
Samsung Electronics
6-5
6-2-4 No Sound
Symptom
- Video is normal but there is no sound.
Major Checklist
- When the speaker connectors are disconnected or damaged.
- When the sound processing part of the Main Board is out of order.
- Speaker defect.
Troubleshooting
Procedures
Is the cable connection between
the Main Board and the speaker
properly connected?
Is the output voltage of SMPS
normal? (CN803 #5)
Is the speaker output terminal
of the Main Board normal?
Replace the Speaker
Connect the cable properly or
replace the cable, if necessary.
Replace the Main SMPS
Replace the Main Board
Summary of Contents for PS-42C7S
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Page 107: ...Circuit Description Samsung Electronics 13 15 Scan_l Even_Scan Y Sustain ...
Page 108: ...Circuit Description 13 16 Samsung Electronics Attachment 2 X Output Waveform X Sustain ...