Product specifications

4-21

4. Troubleshooting

4-1-5. No Video_Video CVBS (X4)

Symptom Audio is normal but no picture is displayed on the screen. -

Major

checkpoints

Check the Video CVBS source -

Check the Chelsea. -

This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. -

Diagnostics

Does the CVBS data appear at

TP-COMP1_Y TP-SIDE_AV_CVBS ?

Does the digital data appear at

TP-E_TXCLK+, E_TXCLK-,

O_TXCLK+, O_TXCLK- ?

Yes

Check a set in the 'Stand-by mode'

Input the video source properly.

Please, Contact Tech support.

Check CN1101, CN1105_SAV.

Change the Main Assy.

Check IC3002 (X4).

Change the Main Assy.

Power indicator LED is off.

Lamp(Backlight) on, no video ?

Check the video source and

check the connection of video cable?

Check the LVDS cable?

Check the T-Con B'd?

Replace the LCD panel?

Caution Make sure to disconnect the power before working on the IP board.