4-9
4. Troubleshooting
4-1-5. No Picture (Video_CVBS)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Video Source
Check the SDP84(ARSENAL)
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Diagnostics
1
2
No
Check a connection harness.
No
Power Indicator is off.
Lamp on, no picture.
Yes
Does the signal appear at C6067 of
IC6001?
No
Please, Contact Tech support.
Check a LVDS cable?
Replace lcd panel?
Yes
Check a A/V cable and video signal.
Yes
1
2
Does the digital data appear at the
output of LVDS (RA7062~RA7067)?
No
Check a IC6001
Change a main PCB ass’y
Caution
Make sure to disconnect the power before working on the IP board.
Summary of Contents for LN52B750U1M
Page 7: ...1 4 1 Precautions Memo ...
Page 31: ...4 4 4 Troubleshooting WAVEFORMS 1 R G B Output Signal PC_R Signal PC_G Signal PC_B Signal ...
Page 33: ...4 6 4 Troubleshooting WAVEFORMS 1 Signal of HDMI Data 2 Digital Output Data ...
Page 37: ...4 10 4 Troubleshooting WAVEFORMS 1 AV_CVBS Output Signal ...
Page 39: ...4 12 4 Troubleshooting WAVEFORMS 1 I2C Data 3 Speaker out ...
Page 66: ...4 39 4 Troubleshooting 5 Press 0 6 Save latest BSP images to update folder in usb memory ...
Page 67: ...4 40 4 Troubleshooting 7 Enter bbm usb after connecting usb memory 8 Press 1 ...
Page 68: ...4 41 4 Troubleshooting 9 Enter u boot bin 10 Press x to return prompt menu ...