Samsung QN49Q6FNAF Service Manual page 59

6. If still wrong voltage replace SMPS
OVD_LEVEL (Over Voltage Detect) 3.3Vdc : Operating Normal
9
7. If 0V or changing, an SMPS or Panel error exists. Perform Backlight Test.
Backlight On/Off :
9
• If missing or error : Replace
0V Off to 4.4Vdc ON
Main Board.
4. Troubleshooting
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