Samsung UE B7000WW Series, Service Manual

Page: 298 / 319

4-20
4. Troubleshooting
4-1-7. No Video (Component 1)
Symptom Audio is normal but no picture is displayed on the screen.
-
Major
checkpoints
Check the Component source
Check the Chelsea
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
-
-
-
Caution Make sure to disconnect the power before working on the PD board.
Diagnostics
No
Check CN3004
Change the main PCB assy
No video
No
Check component source and
check the connection of
component cable ?
Does the signal appear at R3065,
R3064, R3066(Y, Pb, Pr)?
Yes
Yes
Input a component signal.
Check the connected cable.
Yes
9
No Check IC6001
Change the main PCB assembly
Does the digital data appear at
RA6004, RA6005, RA6006 (Rout)
RA6007, RA6008, RA6009 (Gout)
RA6001, RA6002, RA6003 (Bout)?
Yes
Yes
Check the LVDS cable?
Replace the LCD panel?
Please, contact Tech support
No
Does the digital data appear at
pin14~42 of CN7005?
No
Check IC7001
Change the main PCB assembly
5