grasi Posted September 30, 2016 Share Posted September 30, 2016 va salut stimati prieteni am la reparat un samsung cu sasiu KS1A procesor tda9351ps in sursa 5Q0765RT am si eu o problema cu el nu se aprinde stby am schimbat integratul de alimentare am schimbat toti conzii (sursa si bo) dar degeaba tot nu se aprinde stby ul am scos finalul de cadre am zis sa nu fie in scurt tot nimic proprietarul zicea ca se aprindea foarte greu .va rog poate ma ajutati sa l dibuiesc .stima Quote Link to comment Share on other sites More sharing options...
stefank Posted September 30, 2016 Share Posted September 30, 2016 nu se aprinde st-by , dar tensiuni in secundarul sursei sint ? Quote Link to comment Share on other sites More sharing options...
grasi Posted September 30, 2016 Author Share Posted September 30, 2016 nu este nimic nicio tensiune Quote Link to comment Share on other sites More sharing options...
adydep Posted September 30, 2016 Share Posted September 30, 2016 Rezistenta de start intrerupta Quote Link to comment Share on other sites More sharing options...
stefank Posted September 30, 2016 Share Posted September 30, 2016 daca nu este vreun scurt in secundar atunci in primarul sursei trebuie cautat defectul , electroliticul mic de linga integrat sursa ati schimbat ? Quote Link to comment Share on other sites More sharing options...
winstyle Posted September 30, 2016 Share Posted September 30, 2016 Poate ajută asta http://elektrotanya.com/samsung_ks1a_chassis_cb20f42tsxxec_tv_sm.pdf/download.html Verifică tensiunile de alimentare procesor Trebuia să spui de la inceput că sursa nu dă nicio tensiune . Verifică R803 ,R804 ,R811 ,R812 , din primar sursă Quote Link to comment Share on other sites More sharing options...
grasi Posted September 30, 2016 Author Share Posted September 30, 2016 tensiune pe filtraj am 310v Quote Link to comment Share on other sites More sharing options...
winstyle Posted September 30, 2016 Share Posted September 30, 2016 Foarte bine .Acum ,verifică acele rezistențe . Mai verifică și C802 Quote Link to comment Share on other sites More sharing options...
grasi Posted September 30, 2016 Author Share Posted September 30, 2016 c802 este schimbat r811 ,812 sunt bune dar 803 ,804 nu are rezistente e locul gol si nici nu a fost nu are nici optocuplor Quote Link to comment Share on other sites More sharing options...
winstyle Posted September 30, 2016 Share Posted September 30, 2016 Pe pinul 4 are conectată vreo diodă zener ? Verifică si acea diodă . Eventual , verifică toate componentele din jurul integratului din sursă . Quote Link to comment Share on other sites More sharing options...
grasi Posted September 30, 2016 Author Share Posted September 30, 2016 ok multumesc am sa revin Quote Link to comment Share on other sites More sharing options...
Florinel TV Posted September 30, 2016 Share Posted September 30, 2016 Am avut si eu mai demult acu vreo 3 ani un defect indentic ca al tau , asa mia spus si mie clientul ca se aprindea foarte greu si dupa nu a mai vrut sa se aprinda deloc , dar nu mai stiu exact ce defect a avut tin minte ca am schimbat ceva conzi din secundar sursa si primar , mai ales pe tensiunea mica de 13v , deci integratul la mine a fost ok Quote Link to comment Share on other sites More sharing options...
grasi Posted October 1, 2016 Author Share Posted October 1, 2016 va multumesc la toti pentru bunavointa si rabdare dar am renuntat l am chemat si la luat sa faca ce vreacu el Quote Link to comment Share on other sites More sharing options...
Florinel TV Posted October 1, 2016 Share Posted October 1, 2016 Un defect ca acesta se rezolva in maxim 20 de minute Quote Link to comment Share on other sites More sharing options...
dan cod Posted October 2, 2016 Share Posted October 2, 2016 Nu se renunta asa usor.Poate era ceva dioda cu scapari pe acolo. Quote Link to comment Share on other sites More sharing options...
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