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Semp Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SEMP TOSHIBAU16
U16
Str5753 burns without apparent causeDz 876 5v6Elias2305
SEMP TOSHIBAU18
U18
Without the +b voltages from the power supply or some of the 3 low onesC865 of 1nfElias2305
SEMPTV 2050 MAV
U17
Dark sidesQ 840 alteredReplaceElias2305
SEMP TOSHIBATV2998 DS
Mute audio flickering imageCapacitor c449GENIVALDO
SEMP1470E
Inoperative, with humming at the power supplyShorted flybackReplace flybackHeinz
SEMPTV1451 NAV
U 18
Turns off after 5 seconds and heats up horizontal output transistorChanged flyback defect resolved, flyback number is tfb4203aj.
SEMP2987 -LEM2
LEM 2
No horizontal synchronizationCapacitor 1mf 50v no pino 38 ic 501elidio
SEMP TOSHIBA2080E
000
It works but after two minutes it turns off and beeps826 diode completely shortedhigino
SEMP TOSHIBATV2079FMS
All pink screen, no image and locked to one channel (sound only)This is a model that always comes to the bench with a lot of cold soldering on its components, mainly cis and power transistors and even varicap selectors.After resoldering everything, checking operation, if it persists, replace the 24c04 memory, enter service mode and adjust the parameters according to the model and it will be ready!ELETRONICA ESTUDIER
SEMPTV1491JAV U14R
The LED lights up, the system protects, that is, it does not armChange the q430 or q405 (transitor c3209)This email address is being protected from spambots. You need JavaScript enabled to view it.
SEMP TOSHIBATV 2091
U14
Horizontal output shortedReplace of q402, and a change in the horizontal circuitmiguelito
SEMPDVD SD-6072S
Doesn't play anythingDefective spindle motorMeasure impedance with a digital multimeter, the value must be between 8 and 11Ω
SEMPDVD SD-7050
Doesn't workCheck, c8 on the power supply board, transistors on the mpg 8050 and 8550 board
SEMP TOSHIBAU9
U9
560k r861 changedAndrade Sequeira
SEMP2998
LEM4
Vertical closing after some time onC 311 1500pfluizandradina
SEMP TOSHIBA2080E
Blue screen, without video and with audioCheck r 282 of 1kDaniel
SEMP TOSHIBA2080E
Channels with drizzleCheck r 163 of 5k6Daniel
SEMP TOSHIBATV2996S
Takes time to callPower supply coupler photo
SEMP TOSHIBADVD SD7050S
DeadSolution: replace resistor (r1) and capacitor (c8) on the power board and the 2 capacitors (c346,c345)This email address is being protected from spambots. You need JavaScript enabled to view it.
SEMP TOSHIBA2996
Problems with tuningCheck c101