Guest ovidel_mm Posted June 24, 2014 Share Posted June 24, 2014 Salutare, de 13 ani am la tara (unde mergem in week-end)un televizor LG CF-20F66X care saptamana trecuta s-a defectat. In momentul in care il pornesc se aude tic-tic si nu se aprinde led-ul de stand-by. Poate cineva sa ma indrume sa-i gasesc defectul, va rog? Quote Link to comment Share on other sites More sharing options...
tepeleacatalin Posted June 24, 2014 Share Posted June 24, 2014 tic tic tic...defect clasic....de verificat tranzistorul final condensatorul aflat pe colector emitor al acestui tranzistor....si traful final posibil strapuns...asta e ultima varianta probabil a fost un soc electric la pornire si cond de care spuneam s-a scurcirciutat sau intrerupt....tz final posibil sa fi cedat si el depinde de cat a stat in priza in sarcina..... spor si bafta Quote Link to comment Share on other sites More sharing options...
Guest ovidel_mm Posted June 24, 2014 Share Posted June 24, 2014 http://elektrotanya.com/lg_cf20,21f66_chassis_mc-00aa_sm.pdf/download.html Am pus manualul de service pe care l-am gasit pe net.Nu stiu care este tranzistorul final,nu am reparat televizoare si deci nu am experienta , am nevoie sa-mi spuneti piesele de pe schema... Quote Link to comment Share on other sites More sharing options...
leoncris Posted June 24, 2014 Share Posted June 24, 2014 Q402 , KSD5702 , dar eu zic sa incepi cu ... sursa. Quote Link to comment Share on other sites More sharing options...
Guest ovidel_mm Posted June 24, 2014 Share Posted June 24, 2014 cred ca trebuie sa o luam treptat,ca pentru incepatori: ce sa masor prima data? Quote Link to comment Share on other sites More sharing options...
cristybadea Posted June 24, 2014 Share Posted June 24, 2014 Prima data,cu tv-ul OPRIT(deconectat se la retea) masurati daca aveti scurt intre masa sasiului si pinul 3 al TRAFO-ului de LINII Quote Link to comment Share on other sites More sharing options...
Guest ovidel_mm Posted June 24, 2014 Share Posted June 24, 2014 1,2 ohmi la b+ 0.1 ohmi la c ambele fata de masa Quote Link to comment Share on other sites More sharing options...
cristybadea Posted June 24, 2014 Share Posted June 24, 2014 (edited) Scoate-ti tranzistorul Q402(D2499) si vedeti daca mai aveti scurt acolo.succes! Edited June 24, 2014 by cristybadea Quote Link to comment Share on other sites More sharing options...
Florinel TV Posted June 24, 2014 Share Posted June 24, 2014 ducetil la servis fara suparare dar acolo stie ce sai faca acolo se vede ce este defect ducetil la servis fara suparare dar acolo stie ce sai faca acolo se vede ce este defect succes Quote Link to comment Share on other sites More sharing options...
Guest ovidel_mm Posted June 25, 2014 Share Posted June 25, 2014 nu mai am scurt. deci trebuie inlocuit tranzistorul. 1. Ce cauze ar fi putut duce la arderea lui? ca sa verificam inainte sa se arda cel nou 2. de unde pot sa cumpar tranzistorul? Quote Link to comment Share on other sites More sharing options...
dan cod Posted June 25, 2014 Share Posted June 25, 2014 1.Condul de recuperare defect,driver defect,sursa cu U1 marit,traf de linii defect,deflexie defecta 2.De la magazin Quote Link to comment Share on other sites More sharing options...
cristybadea Posted June 25, 2014 Share Posted June 25, 2014 (edited) Eu zic ca,aici,cauza defectarii este C401(2,2mf/50v).Il puteti pune mai mare (4,7mf,10mf/50v sau 63v) succes.Puneti un bec de 75-100w/24v intre C-E Q402,porniti tv-ul si vedeti daca tensiunile in secundarul sursei sunt bune. Edited June 25, 2014 by cristybadea Quote Link to comment Share on other sites More sharing options...
iuliantv Posted June 25, 2014 Share Posted June 25, 2014 Eu zic ca,aici,cauza defectarii este C401(2,2mf/50v).Il puteti pune mai mare (4,7mf,10mf/50v sau 63v) succes.Puneti un bec de 75-100w/24v intre C-E Q402,porniti tv-ul si vedeti daca tensiunile in secundarul sursei sunt bune. O editare la 75-100w/24v Quote Link to comment Share on other sites More sharing options...
cristybadea Posted June 25, 2014 Share Posted June 25, 2014 Corect domnule iulian.Am gresit din cauza grabei.Este vorba de bec de 75-100w/240v. Quote Link to comment Share on other sites More sharing options...
Guest ovidel_mm Posted June 27, 2014 Share Posted June 27, 2014 Corect, condensator defect, inlocuit si tranzistorul dar la un service.Multumesc. Quote Link to comment Share on other sites More sharing options...
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