Samsung UN40HU6900F, Service Manual

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4-1-2. Simple flow chart of malfunction
Yes
No
No
Can you see
anything on the
screen?
Yes
Can you see
OSD menu running
on the screen?
Check LVDS cable
connected to Main Board.
If necessary, replace the
Main Board.
Yes
Can you see Digital
Channel broadcast ?
No
Replace the Main Board.
Yes
No
No
Yes
Yes
Check the LVDS
Cable connected.
If necessary replace the
T-CON Board.
No
Change the Main Board.
No
Check 24p Cable.
If necessary, replace the
SMPS Board.
Yes
No
Change the Main Board.
Does the TV turn
on?
Check the Power Cord.
Is any sound of
TV when RF signal
connected?
A5V appear at
the pin 4 of CN201?
B13V appear at
the pin 11, 12, 13 of
CN201?
Please, contact Tech
support.
4-3
4. Troubleshooting