Samsung PS43E450A1WXZG Service Manual page 35

CAUTION
Make sure to disconnect the power before working on the SMPS board.
Che ck the LED ope ra tion of Logic Boa rd
whitch is norma lly ope ra ting?
(Norma l : Blink once a s e cond)
Ye s
Che ck the LVDS conne ctor.
Is it conne cte d corre ctly?
Ye s
Che ck All output volta ge s on S MP S .
Are a ll volta ge ne rma l?
Ye s
Re place the Main Boa rd.
No
Re place the Logic Boa rd.
No
Che ck / Re pla ce the LVDS Ca ble .
No
Re place the S MP S .
4. Troubleshooting