Samsung UE32D55-R Series Service Manual page 111

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4. Troubleshooting
No Video (Video CVBS)
„
Symptom
Major
checkpoints
Diagnostics
Caution
4-62
Audio is normal but no picture is displayed on the screen.
-
Check the Video CVBS source
-
Check the Main Chipset.
-
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
Power indicator LED is off.
Lamp(Backlight) on, no video ?
Yes
Check the video source and
check the connection of video cable?
Yes
Does the CVBS data appear at
4
PIN - COMP1_Y_CVBS ?
Yes
Does the digital data appear at
2
TP-E_TXCLK+, E_TXCLK- ?
Yes
Check the LVDS cable?
Replace the LCD panel?
Make sure to disconnect the power before working on the IP board.
Digitized in Heiloo Netherland
No
Check a set in the 'Stand-by mode'.
No
Input the video source properly.
Check CN503.
No
Change the Main Assy.
Check IC1111 (X5).
No
Change the Main Assy.
No Please, Contact Tech support.
4/30/2017