Simple Flow Chart Of Malfunction - Samsung UN40D6400UF Service Manual

4. Troubleshooting

Simple flow chart of malfunction

„
Does the TV turn on?
No
Check the Power Cord.
Yes
Is standby LED on?
No
A5V appear at
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
Yes
Is any sound of TV?
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
Check dimming cable.
No
If necesary replace the
Main Board.
Yes
Can you see Digital
Channel broadcast ?
No
Replace the Main Board