Samsung QN55Q75CNF Service Manual page 53

4. Troubleshooting
PANEL
„
• Check Panel
1. If Noisy Video:
Soc T-CON Pattern in Factory Mode
9
• Use type of Noise observed (Bars, single lines, video distortion, etc to help.)
• If noise is only on one half of screen check / swap panel USI-T cables.
• Verify Defective Panel Cables, TV Main/T-CON Board or Panel.
2. If No Video & Back Lights are OK (on):
If sound is OK check Panel 13Vdc supplies to Panel
9
If No sound
9
replace TV Main Board
9
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