#Sansuitv#Standby_release#No_Eht. How to repair Sansui tv.

SANSUI TV 21"ULTRA SLIM PCB MAIN IC TDA12135PS/N2/3 A07 EHT BSC25-01N4095K-C VERTICAL IC LA78141 SOUND IC TDA7297SA STR CQ0765RT STANDBY RELEASE BUT NO EHT 1.Power on/measure EHT supply voltage---ok (standby). 2.Standby release by remote---- ok----eht supply voltage four times fluctuate---- then standby. 3.Check H DRIVER supply voltage--- fluctuate. 4.Check memory IC supply voltage and SCL,SDA voltage---- ok. 5.Check main IC supply voltage 3.3V---ok (pin 33,40,43). 6.Check 5V main IC pin No.2----low. 7.check 8V main IC pin No.3----ok(but fluctuate). 8.Power off/Check ohms Main IC pin No.2.---low ohms. 9.Check ohms main IC pin No.54----low ohms(5V supply pin). 10.Main if pin No.2 separate from PCB-----Check ohms PCB pin----low. 11.Main if pin No.54 separate from PCB----check ohms at pin No.54------ low ohms. 12.Again check ohms at PCB (pin no 2)----- high ohms. 13.Main if pin No54 short. 14.Main if defective. 15.Open main IC. 16.Set new main IC. 17.Then---------