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SEMP Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SEMPTV2091KAV
U15
It only turns on when it wants, and when it turns on, if the control turns it off, the LED starts pulsing, after a few seconds the LED turns back to normal and it turns on.Replace d830 1n4148dj pituka
SEMPTV2091KAV
U15
LED flashing directly and the power supply is 130v, if you remove the q432 the TV turns on with the normal 113v power supply but without video, the characters do not appearReplace micronas q501 8843cpng4v47dj pituka
SEMP1488
U14
Turns on with a dark screen, if you enlarge the screen, only a frame appears in the middle of the screenR873, with SMD cold soldering at the power supply.Solve r873MARCONES DE ARARIPINA-PE
SEMPTV2934BSL
SK91
Burning horizontal transistor, heats up until it burnsChange coil l301 next to the flyback.dj pituka
SEMPTV-2177
Vertical sidebar with stripesExhausted 330uf/16v c449 capacitor. next two vertical.After changing the TV ok.George Pontes
SEMPTV2934BSL
Channel does not enter rf, all voltages present in the varicapChange 10k r106 next to the varicapdj pituka
SEMPTV2982
LED lights up but doesn't turn on, unstable power supplyR878 39k changedHAHNRAHN
SEMP TOSHIBA TV2959JFS
LEM10
Turns on and off, then the LED goes outOpen 220k resistor r851Replace the sameOfina dos eletrônicos
SEMPTV1452
Completely stopped, no standbyPhoto couplerReplaced and solved the problemEletrônica Renascer
SEMP1454 (P)SL
TV turns on with a rainbow-colored screen without the charactersCi do vertical. n401. (utc78040) faulty swapPut a ci (stv9302b) it's greatAndre mamilha
SEMP TOSHIBA40L2400
Without any sign of lifeNo 1.15v voltage on the l801 coil even with pin 7 of the n801 with 4v.Replace n801 and the TV works again.Andre crisópolis
SEMPTV1454(P)SL
U19
TV won't turn on when LED flashing comes onChange resistor 235 33k changed killing 5 volts from pin 8 of the fais everythingEnoque Dantas
SEMP TCL49K1US
Blue fabricBut now when it turns on it gets a blue screen it stuck on a blue screenJuliana teles nogueira
SEMP1450
U17
Vertical closedLeaky diodes d301 and weak d302.Replace with 1n4007Heinz
SEMPTV DLED L32D2900
Burning the LED bus.High backlight voltage, above 80v. the ideal voltage would be approximately 72v.Remove the first two 0Ω resistors close to the LED connector (cnb801). the voltage will drop to approximately 69v.JMS Eletrônica
SEMPLE3278I
To increase the useful life of the LEDs after replacementRemove the 0.47r resistors r48 r53 r76 r79 and put 1w resistor 1r0 in placeOriginal voltage was 47v, putting one resistor voltage goes to 41.5v, if tsound are two it goes to 44.0vPaial.eletros
SEMP TCL40S6500FS
RTK2841
Burning backlight ledsTo lower the current of the LEDs and avoid their premature burning, it is necessary to remove two resistorsRemove resistors rr35 and rr36 from 0 homsWtec
SEMP2086MMS
U17
Screen off (with filament lit)Almost zero screen voltageReplace capacitor c902 (102k) note: in the test it was working fine. but it was just a matter of changing it that solved itJS Eletronica (Nilsinho Rodrigues)
SEMPTV2134CSL
SK11
Turns on and off after 1 minuteChange the q805, transistor 8050, I put a bd139, and just change the base and collector.pituka
SEMPTV2134CSL
SK11
It doesn't turn on, I plug it into the socket the LED comes on, the relay hits as if it were going to turn on but it doesn't turn on, the solution is to change the 5v6 zd202 zener diode, next to the micronas, tsound is no 5v voltage on pin 2 of the micronasReplace zd202 zener diode, 5v6 next to the micropituka