Table of Contents
Advertisement
4-1-4. No Video (Tuner_CVBS)
Symptom
Audio is normal but no picture is displayed on the screen.
-
Check the Tuner CVBS source
-
Major
Check the SDP84(ARSENAL)
-
checkpoints
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Diagnostics
1
1
2
Caution
Make sure to disconnect the power before working on the IP board.
2
1
Power Indicator is off.
Lamp on, no picure.
Yes
Does the signal appear at C5020?
Yes
[4] Does the signal appear at
pin 10 of TU5002?
Yes
Does the digital data appear at the
output of LVDS (RA7062~RA7067)?
Yes
Check the LVDS cable?
Replace the LCD panel?
No
Connect the RF cable and
check RF signal.
No
Check a B+ voltage (#4 of Tuner) 5V,
change a main PCB ass'y.
Check a TU5002
No
Change a main PCB ass'y.
No
Check a IC6001
Change a main PCB ass'y
No
Please, Contact Tech support.
4. Troubleshooting
4-7
Advertisement
Table of Contents
