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SEMP Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SEMP TOSHIBATC1470
Green screen with white traces across the imageReplace ic501Pablo
SEMPTV 2090I
U14
Led standby ,+b 75 voltsC887 (direct swap) and c419 (direct swap)cabessaonatal
SEMPTV2934(B)SL SK_91
SK91
When turned on the vertical blowsPlease help me solve this defect if you can!! I really appreciate it!!LUZINAR OLIVEIRA
SEMPTV1480E
U5
No charactersDiodo zener d-302Replace (shorted)LUCIANO
SEMPLC2640W
HL57
No imageTsound are voltages, 24v for inverting.The inverter board and ci's were resoldered.joaomvjr
SEMP TOSHIBA2083 FAV
U11
Stretched, shaky image and horizontal lines.Poor contact in several components: varicap, 5v regulator for the vertical circuit and mainly in r 408.Resoldering in all mentioned and the main one was in r408(1k).RONDYSOM
SEMPTV 1030
Vertical interminenteBad contactResolder q 405 and its adjacent surroundings.lo
SEMPTV2015
U17
Vertical beam. but the vertical line is not straight. It keeps making small curvesI changed the vertical outlet and nothing.Replace deflector without measuringDeusomar
SEMPTV2091KAV
Vertical closing a bar below the TV then turns offChanging transistor q422 c3209 = c2655 you can put any of these transistorsAlmiro Alves
SEMPTV 2098 LMS
U16
Turns on and stays in direct standby, not horizontal, it doesn't oscillate. power supplys are all low +20v +>7.5v, +15v=>9.3v and +b 113v=>74v. If it stays for a long time, the horizontal will sometimes fluctuate. the +b with or without flyback remains at 74v100u x 25v capacitor in position c887, replace without measuring.Matões A.Técnia
SEMPTV 2098 LMS
U16
Turns on and stays in direct standby, not horizontal, it doesn't oscillate. power supplys are all low +20v +>7.5v, +15v=>9.3v and +b 113v=>74v. If it stays for a long time, the horizontal will sometimes fluctuate. the +b with or without flyback remains at 74v100u x 25v capacitor in position c887, replace without measuring.Matões A.Técnia
SEMPTV 2086 KMS
It takes a long time to turn on, when it turns on tsound is no image and no soundC= 887Replace and analyze components on the same lineELETRONICA MEDEIROS
SEMPTV1480
No vertical syncOpen 22k resistor r563.Ademir solânea pb
SEMPTV-1452
U19
Power supply dropping below 90volts, vertical deficiencyPhoto couplerReplaceLUCIANO
SEMPTV 1490(I)
U14
Screen open only about 10 cm. all red, without sound or image.+9 changed, with almost 12v.Replace q405 e d412reinaldo almeida
SEMP TOSHIBATV 2091 KAV
U15 U14 U17
When turned off by remote, it erases and returns only imageDoes not cut the +b 9v on stand byQ 432, dtc 123jk open, replacejasvan souza
SEMP1491-KAV
Tsound is no +b in secondary schoolQ-801 str-w 5753a open or shorted) (r-876 (220r)open) (r-877 (10k) open) (d-876 5.6 volt zener shorted)Replace them all.Ademar / Videira s.c
SEMPC2054
Spiky image with interference in the imageFly bekedezio eletronica
SEMPTS147
Without color and with reduced verticalReplace ta8718Jony
SEMP TOSHIBA2916/NMS
U-10
Smudged or blurred screenDoes not arm the relay to activate the tube coilResolder the sr 81 relay pinsAdemar / Videira sc