Semp TV Repair: Common Faults and Solutions.

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Semp Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem	Solution	By
SEMP	TV2084 U11	Poor contact, image disappears	It is quite common in this model, to check the smd 831 resistor next to the varicap		BETO ELETRONICA ACRELANDIA ACRE
SEMP TOSHIBA	14A82 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 flyback	Cracked 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
SEMP	2070E	Vertical closed when turning on the TV, and opens little by little	50v 2.2 µf capacitor near the fatigued oscillator	Perform the replacement.	Jorge Henrique
SEMP	2987DS JJ	It didn't turn on d876 d871872	Greenish image r902	Kk	fernado tj maçeio
SEMP	1490/AV U14	LED on but I didn't break the horizontal one	C419 side + 6.3 volts on the other side it would have to be 5.1 this goes on the base of the horizontal transistor		Diornens
SEMP	2087 U11	Blue screen with sound without characters	D901 in4148 tube plate	D901 in4148 tube plate	wellington
SEMP TOSHIBA	TV2997SU	Image a little closed at the top with return lines	Check r309		Edson - SP
SEMP TOSHIBA	TV1490 U14	Power supply with oscillations and does not work	Check r876 (220r)		Edson - SP
SEMP	TV2091KAV 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=bu808	Alextecnico
SEMP	TV2083FAV U11D2	So standbay +b normal	C889 as low capacitance		ELETRONICA AGUIAR
SEMP	TV2934	Hitting direct relay	Str-w6556a in power supply	Just replace	ladmyr eletronica universal bh
SEMP	TV2934BSL SK-91	Burning horizontal output and fet irf630	Shorted deflector coil	Replace note; in my case it was possible to recover it by dismantling it	paulo-maceio/al
SEMP	TV2934	Making noise on the str and pad	C607 from power supply	Replace power supply c607	wellington
SEMP	TV 1030 U17	Does not tune channels	Dz 312 (10v) secondary power supply 9v	Dz 312 curto 10v	wellington
SEMP	U17	Black stripe on right and left sides	6n8 capacitor		Beto Eletronica Acrelandia AC
SEMP TOSHIBA	TV2134 SKY	This TV arrived at the workshop with a very funny defect, it started normally as if it would work but then cut out	Loss of capacitance of a capacitor (c634 cap 47uf 160v)	Replace do cap c634 cap 47μF 160v	Ozenildo
SEMP	TV1490 U14	LED on but not turning on	Cold soldering on r416 and r417	Resolder the resistors	julio
SEMP	TV 2134 BSL SK11	I got this TV like this, it would turn on and before anything appeared it would continually turn off and forget about it. When I turned on the screen I noticed that the screen was just rich in the middle of the screen without reaching the sides.	I checked primary and secondary power supply sh and sv. everything ok. After a week of almost giving up I found an open inductor at position 200, this inductor takes 5v to pin 22 of the tda processor. I played it, the TV was great. Thanks, a hug clebson vale de pirabas/ parÁ		Clebson Vale
SEMP TOSHIBA	TV2091KA	Horizontal output shorted	Substituir capacitor c419(45uf/50v)	Recommendation: check the quality of the horizontal output transistor, use darlington bu808dfx	Luir
SEMP	TV-2134	Oscillates and turns off, killing all secondary tension. I almost gave up on this TV and was amazed when I discovered what it was.	L306	Replace l306	This email address is being protected from spambots. You need JavaScript enabled to view it.