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Troubleshooting
No Picture (When audio is normal)
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Symptom
Major Checklist
Troubleshooting
Procedures
Caution
4-4
Great user manuals database on
- Audio is normal but no picture is displayed on the screen.
- This may happen when the Main Board is functioning but the X, Y Main Board, Logic Board, or Y Buffer
Boards are not.
- The output voltage of the Main SMPS.
- This may happen when the LVDS cable connecting the Main Board and the Logic Board is disconnected.
Are the Vs and Va voltages normal after
removing all cables from the SMPS?
(CN810, CN809, CN808, CN807)
Did problem improve?
Did problem improve?
Did problem improve?
Did problem improve?
When separating and connecting the cables such as CN810, CN809, CN808, CN807 of the Main SMPS, CN4701
of the X Main Board, and CN5707 of the Y Main Board, a spark may be generated by the electric charge of the
high capacity capacitor. Therefore, wait some time after disconnecting the power cord from the unit.
UserManuals.info
CN807
No
Yes
No
Replace the Y Main Board
Yes
No
Replace the X Main Board
Yes
No
Replace the Logic Board
Yes
No
Replace the Y Scan Board
CN810
CN809
CN808
Replace the SMPS
Samsung Electronics
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