Samsung N64D, Service Manual

Page: 78 / 119

4-19
4. Troubleshooting
4-1-7. No Video (Component)
Symptom No video on component input.
-
Major
checkpoints
Check your source on the TV.
Check your source content.
Check all connections.
-
-
-
Diagnostics
40” 52”
No
Does the component data appear at
COMY, COMPB, COMPC
(Comp1 / Y, Pb, Pr)?
Power indicator LED is off.
Lamp(Backlight) on, no video
No
Check the component source and
check the connection of
component cables(Y,Pb,Pr)?
Check CN706
Change the Main PCB
40” : BN44-00264A
52” : BN44-00267A
Yes
Check IC201 (Saturn4)
Change the Main PCB
40” : BN44-00264A
52” : BN44-00267A
No
No
Does the digital data appear at
Pin #16,17,34,35 (LVDS Data clk)
of LVDS connector?
No
Please, Contact Tech support
Check the LVDS cable?
Replace the LCD panel?
Yes
Input the component
source properly.
Yes
Yes
2
Check a set
in the ‘Stand-by mode’.
5
Caution Make sure to disconnect the power before working on the IP board.