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SEMP Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SEMPTV2090
U14
Does not work, only stan-by LED on, +b 76v power supplyPower supply capacitor c887 low without capacitance.Replace c887 without measuringALEX/FETTER
SEMPU16
Just stanby without the (hvcc)Zener diode d431 shortedBruno nicacio
SEMPSD5091VK
919242
Does not turn on, standby LED blinksWe1 position capacitor with value 100uf x 16vReplace the capacitor with the same or equivalent one and run for the hug!Wanderlei Studio - Eletrônica Áudio e Vídeo - Quixadá / Ce
SEMPTOSHIBATV 2157 (B) FS
LEM 7
It works from time to time when it goes offline and destabilizes the horizontal, vertical and chroma. you turn it off and on and it works normallyReplace zener diode d101= mtzj33b or 33volt zener and cap.elet. 112=4.7x50v. it's ready!Dé andradeDé Andrade
SEMP/ TOSHIBALC 3241W
Difficulty callingC 842, c 864, c 869 (replace without testing)Miratec Eletrônica
SEMPTV 2934 (B ) SL
SK-9
Noisy power supplyC311 (47uf/200v) with low capacitanceReplace c311leitemarcellus
SEMPTV2134 (C) SL
SK11
Green screen no image15k r525 openReplaceELETROCLAUDIOPE AGUAS BELAS
SEMP1431 NACDC
U18
No video via AV on normal channel 3Rv02 47r openReplacementjosimar
SEMP TOSHIBATV 2134
Nothing works, not even the LED, dead power supplySee resistors r602 and 603 68keletroademar
SEMP TOSHIBATV 2134
Does not turn on, the LED turns on and off and the secondary voltages drop to zeroVer r633 220k e capacitor c634Eletroademar
SEMP TOSHIBATV 2092 LAV U 16
AA085525
Tsound is no audioAudio stopped workingMateus calebe
SEMPTV2934
SK-91
Blue screen with retrace and turning offShorted blue cannonReplace the tube!Ádrian Chapadão do Céu-Go
SEMP TOSHIBATV2959 JFS
LEM 10
Kinescope does not demagnetize ptc goodRelay that feeds the coil beats but does not dockReplace the relaycarlosss
SEMP TOSHIBATV1022
U13
Vertical closedR 317 changed to 8k on the 5v line near the top of the verticalReplace r 317ALEX/FETTER
SEMP TOSHIBA2982KAVS
Works for 30 minutes and goes out until it becomes darkSken electrola 4.7 -250 volts and c 902 on the tube plateAlways use new components, do not work with used ones.luiztvsom
SEMPTV-2070F
Normal power supply with noise and acting protectionQ814 (just change it and run for the hug)Jefferson Rodrigues
SEMPTVC147CR
Image with reduced frame, +b power supply with 70vD 811 as escapeReplace iteletroni c. r.
SEMPTV2134
SK11
The stand by LED turns on when it is about to start, it hits the relay and turns offC 329 4,7uf/250v secoI replaced c329 from 4.7μF/250v to 10μF/250 and went for the hugDeusomar
SEMPTV2090JAV
U14
Flashing non-vertical listsLeakage capacitor c314 replace without measuringReplace c314 1n5ALEX/FETTER
SEMPTV2982
LEM10
Vertically shrunken and folding at the top of the screenAltered cap c303 smd.Replace c303 (1k5 / 50v)Eletronica Staub