Samsung UA46D7000L Series Service Manual page 36

4. Troubleshooting
Simple flow chart of malfunction
„
Does the TV turn on?
No
Check the Power Cord
Yes
is any sound of TV
when RF signal
connected?
No
A5V appear at
the pin 4 of CN201?
Yes
B13V appear at the
pin 11, 12, 13 of
CN201?
Yes
Please, contact Tech
support
4-2
Yes
Can you see anything
on the screen?
No
Check LVDS
Yes
cable connected.
If necessary replace the
T-con board.
Check 28p cable.
No
If necessary, replace the
SMPS board.
No
Change the main board.
Yes
Can you see
OSD menu running on
the screen?
No
Check LVDS cable connected
to Main Board.
If necessary, replace the
Main Board
No
Change the main board.
Yes
Can you see Digital
Channel broadcast ?
No
Replace the Main Board