Samsung UN40KU630DF Service Manual page 101

4. Troubleshooting
4-1. Previous Check
Check list for initial operation
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1. Check the various cable connections first.
Check to see if there is a burnt or damaged cable.
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Check to see if there is a disconnected or loose cable connection.
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Check to see if the cables are connected according to the connection diagram.
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2. Check the power input to the Main Board.
3. How to distinguish if the problem is caused by Main Board or T-CON Board.
No Video
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Symptom
Check Points
Distorted Picture :
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Check Points
I f 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.
• Check the inner patterns.
4. Troubleshooting
4-1