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SEMP Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SEMP TOSHIBATV1484
Does not turn on LED stays onC872 35v 33uf electrolytic capacitorjefersonpierini
SEMP TOSHIBATVC 102
Doesn't startTransistor 2sa1320 (q813) power supply board shorted base emitterResponsible for powering the IC responsible for the horizontal outputFernando Siqueira
SEMPTV2070F
Vertical closed at the bottom2.2uf 50v capacitor next ci oscillatorReplacewillnner
SEMP20
U8
Bad contacts sometimes turn on and sometimes offCold welding in the infrared of the remote controljoao ortencio
SEMPTV2991
Turns on and off quickly, with closed vertical lineD301 opened to measure on the board, after removing it it measured normal, I still exchanged it for another one, then it worked finePut 1n4007ÁdrianChapadãodoCéu
SEMPTV1491JAV
U14R
Horizontal outlet burnt out, when replaced it heated up and didn't oscillate, I turned off the deflector and it oscillated, but it wasn't the deflector.Replace the two secondary power supply transistors, q405 and q430 with the same reference or compatible with bd135, there is no point in measuring just replacing.fabiusmax
SEMPTV 1484
U12
Horizontal shiftedAltered or open resistor r447Alvaro (prolar)
SEMPTV2093
Image when turned on, shaking and bending at the top, horizontal with 100v change capacitor 220x160v c884
SEMPTV2090 -I
U14
Taking a while to waverEra c887 de 100uf 35vEletroclaudio Aguas Belas PE
SEMPTV2090 -I
U14
LED lights up, press pawer LED turns off but the TV doesn't wobble and it's all powered on.It was the vertical output shortedEletroclaudio Aguas Belas PE
SEMP TOSHIBALUMINA
Dark screen even with maximum brightnessRetire o c902 cinescopioIf I put another one I get the same problemEdvaldo
SEMP1484
U14
Deflectorneudes
SEMPTV2083AAV
U9
Volume going off with the button appearing to be stuck (in some cases volume goes up, in others volume goes down)High impedance touch buttonsReplace all touch buttons (there is no point in measuring, simply replace)fernandocamarques
TV SEMP 1470E
Inoperative does not turn onI did research on the circuit and found r317 de1r open and the vertical output burned ref .tda 8403k changes and the TV started working againI replaced the 1r resistor and ci ta8403keletromjb campina grande
SEMPTV-1403
Sem osdPoor contact on r828(smd) and r447Redo the welds on these two componentsJarbas Santos (eletro-serv)
SEMPTV1470E
No color just black and whiteIc501 ta8718nReplaceEletroclaudio Aguas Belas PE
SEMPTV1490
Image shaking as if the vertical were to close, processor heating up a lot.Defective 7805 regulator, instead of giving 5 volts, it was giving 8 voltsReplace q421 which is a 5volt regulator 7805fabiusmax
SEMP2082
Does not turn on, LED is on!Cold solder not transistor q 430Perse
SEMP1450 MAV
U17
Audio with dark image:Replaced c902 1k 2kv, connected to grid 2. The TV returned to normal.lucas40
SEMP TOSHIBATV2083BAV
U10
Off when volume increases power supply oscillatingDido zener d876 de 5, shv e p876 smd alteradoReplaceEletroclaudio Aguas Belas PE