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ELFORUM - Forumul electronistilor

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un defect ciudat:bu808 defect,s-a inlocuit,la cuplarea alimentarii....pornesc linile,la oprirea din tc se micsoreaza doar putin lumina,tv continua sa functioneze;am scris alta memorie,initial a mers ok,dar daca se intrerupe alimentarea ceva mai mult,5-10min.defectul reapare.......s-a confruntat cineva cu acest defect?

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asa este. :aplauze si eu am muncit putin la acest defect identic(provocat de mine)dupa ce am schimbat finalul linii si condensatorul din baza.la manevrarea sasiului am atins radiatorul lui lm 317 si avea lipitura rece.imi aduc aminte ca am verificat tot circuitul de stand by,am inlocuit si tranzistorul smd pina am depistat cauza.CONCLUZIA:atentie la acest stabilizator ca are niste lipituri foarte fine si se exfoliaza usor cablajul la delasarea acestuia.

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