Troubleshooting; For All Mode; How To Check Inner Pattern? - Samsung UN40D6400UF Service Manual

4. Troubleshooting

4-1. Troubleshooting
1. Check the various cable connections first.
• Check to see if there is a burnt or damaged cable.
• Check to see if there is a disconnected or loose cable connection.
• Check to see if the cables are connected according to the connection diagram.
2. Check the power input to the Main Board.
3. How to distinguish if the problem is caused by Main board or T-Con.
a. No Video : If the problem is No Video but BLU is on and Indication LED is blinking repeatedly and faster than nomal booting,
replace the T-Con board.
b. Distorted Picture : Check the inner patterns.
•

For All mode

GenoaP Napoli Pre
OK OK
NG OK
NG NG
• Only for HDMI mode (additional check)
HDMI Picture
OK NG
NG NG
•

How to check inner pattern?

1. Factory mode( Mute

2. Move to SVC menu.
3. Move to Test Pattern.
4. Check inner patterns.
(This model only support GenoaS, GenoaS FRC POST, HDMI)
MAIN BOARD
Napoli post
OK
OK
NG
Problem
There is no problems after HDMI IC check HDMI source or HDMI jack.
There is no problems before HDMI IC check GenoaS pattern or LVDS cable or T-con.
1 8 2 Power on when TV is in
  
T-CON
Piocture Problem
NG Main board or Signal Source
NG Main board
NG Main or LVDS cable or T-con or Panel
'Stand-by mode')
SMPS BOARD
4. Troubleshooting
4-1