4-25
4. Troubleshooting
4-1-7. No Sound
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..
-
Caution
Make sure to disconnect the power before working on the PD board.
Diagnostics
Change the CN3004 or
the main PCB assy.
No
Yes
No sound
Yes
Check the sound source and
check the connection of
sound cable?
No
Input a sound signal.
Check the connected cable.
Yes
Check the LVDS cable?
Replace the speaker?
Please, contact Tech support.
No
Does the digital data
appear at RA7310 PIN 1, 3, 5, 7?
No
Change IC7001 or
the main PCB assembly.
!
Does the signal appear at
R3069/R3071 or R3080/R3082 ?
Yes
Does the signal appear at
pin1~4 of CN2001?
No
Change IC2002 or
the main PCB assembly.
@
Yes
0
Summary of Contents for UN40C8000XM
Page 10: ...4 3 4 Troubleshooting ...
Page 16: ...4 9 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 18: ...4 11 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 19: ...4 12 4 Troubleshooting WAVEFORMS 1 PC Input V Sync H Sync 2 LVDS Out CLK ...
Page 21: ...4 14 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 22: ...4 15 4 Troubleshooting WAVEFORMS 3 4 HDMI Input CLK 5 TS DATA Out Clk Data 0 ...
Page 24: ...4 17 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 25: ...4 18 4 Troubleshooting WAVEFORMS 6 Tuner CVBS Out Pattern Grey Bar 7 Eagle Out Clk H Sync ...
Page 27: ...4 20 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 28: ...4 21 4 Troubleshooting WAVEFORMS 6 Tuner CVBS Out Pattern Grey Bar 7 Eagle Out Clk H Sync ...
Page 30: ...4 23 4 Troubleshooting Location Main TOP Location Main BOTTOM ...
Page 31: ...4 24 4 Troubleshooting WAVEFORMS 7 Eagle Out Clk H Sync 9 Component Input Y Pb ...
Page 33: ...4 26 4 Troubleshooting Location Main TOP Location Main BOTTOM ...