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SEMP Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SEMPTV2982LAVS
LEM 8
Hissing at the power supplyC819 47/50vReplaceEletroClaudio Aguas Belas
SEMPSD7070
Sometimes it turns on sometimes it doesn'tDefective power key capYou have to replace it because sometimes it measures normalELETRONICA AUTO TREVO
SEMP TOSHIBATV2089
It only stays on standby with the power supply at 77v.Capacitor c887 descapacitado. (100mf x 35v)To replacePersio (TVCompany)
SEMP TOSHIBATV2091
Does not come out of standbyTransistor q430 open.To replacePersio (TVCompany)
SEMPTV2084
U11
Poor contact, image disappearsIt is quite common in this model, to check the smd 831 resistor next to the varicapBETO ELETRONICA ACRELANDIA ACRE
SEMP TOSHIBA14A82
U8
Does not turn on; burning tsh. when connecting with a lamp in series, the lamp blinked and the TV turned off; a spark could be heard on the flybackCracked tube; exchange the same; There are 4 100mfx25v caps around the IC TB1231N which usually leak and cause this, sometimes even sticking the tube, check it.There are 4 100mfx25v caps around the IC TB1231N which usually leak and cause this, sometimes even sticking the tube, check it.sos eletronicos
SEMP2070E
Vertical closed when turning on the TV, and opens little by little50v 2.2 µf capacitor near the fatigued oscillatorPerform the replacement.Jorge Henrique
SEMP2987DS
JJ
It didn't turn on d876 d871872Greenish image r902Kkfernado tj maçeio
SEMP1490/AV
U14
LED on but I didn't break the horizontal oneC419 side + 6.3 volts on the other side it would have to be 5.1 this goes on the base of the horizontal transistorDiornens
SEMP2087
U11
Blue screen with sound without charactersD901 in4148 tube plateD901 in4148 tube platewellington
SEMP TOSHIBATV2997SU
Image a little closed at the top with return linesCheck r309Edson - SP
SEMP TOSHIBATV1490
U14
Power supply with oscillations and does not workCheck r876 (220r)Edson - SP
SEMPTV2091KAV
U15
Image shifted and moving to the right, and heating horizontal output.R447 (4k7) changed.Horizontal heating always check and replace (r447,c418,d418) generates q404=bu808Alextecnico
SEMPTV2083FAV
U11D2
So standbay +b normalC889 as low capacitanceELETRONICA AGUIAR
SEMPTV2934
Hitting direct relayStr-w6556a in power supplyJust replaceladmyr eletronica universal bh
SEMPTV2934BSL
SK-91
Burning horizontal output and fet irf630Shorted deflector coilReplace note; in my case it was possible to recover it by dismantling itpaulo-maceio/al
SEMPTV2934
Making noise on the str and padC607 from power supplyReplace power supply c607wellington
SEMPTV 1030
U17
Does not tune channelsDz 312 (10v) secondary power supply 9vDz 312 curto 10vwellington
SEMPU17
Black stripe on right and left sides6n8 capacitorBeto Eletronica Acrelandia AC
SEMP TOSHIBATV2134 SKY
This TV arrived at the workshop with a very funny defect, it started normally as if it would work but then cut outLoss of capacitance of a capacitor (c634 cap 47uf 160v)Replace do cap c634 cap 47μF 160vOzenildo