Samsung PS43E400U1RLXL - Digital Part Troubleshooting

4.Troubleshooting
4.1.4.DigitalPartTroubleshooting
1)Itisdifculttocheckdigitalvideosignalbecauseoftoofastandsmallsignal.
2)Checkdigitalvideosignal,UseH-sync,V-syncandClockforbasic.
3)EachdigitalvideoICsconnectedwithdataline,H-sync,V-syncandClockline.
4)CheckH-syncperiod,V-syncperiod,Clockperiod.
5)Ifperiodisoutofspec,ChangetheIC.
H-Sync
1 Period(15.63kHz )
V-Sync
1 P e riod(50Hz)
Clock
1 P e riod(13.5MHz)
Ye s
Ye s
Ye s
Re place the Main Boa rd.
Re place Fus e (F801S).
Is th e Fus e(F8 01S ) of the SMP S Power
Input P a rt blown?
Re place the SMP S .
SMP S CN801
PIN2 : S TB 5V
PIN1_PS ON : Che ck to se e if it is 0V
Is th e S MPS CN801 connector a nd the
Main Boa rd CN201 conne cted?
Is th e S MPS CN801 connector a nd the
Main Boa rd CN201 conne cted?
No
No
No
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