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spyry

TV JVC fara sunet!!!

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Salut!Problema cu care ma confrunt la acest TV este ca ,dupa ce am reparat sursa care a fost defecta dupa un trasnet ,am ponit Tv-ul si nu are sunet am masurat tensiunea de alimentare a finalului audio 14,5v ,OK;pe iesire 0v;pe pin 3- 400mv;am veificat daca exista smnal de sunet pe pin 4 si este OK; AM PRESUPUS CA ESTE INTEGRAT DEFECT ,SI L-AM INLOCUIT,nici o modificare ,in pin 3 cred ca e problema dar nu am schema de aceea va rog daca ma puteti ajuta cu o schema a acestui tv JVC modelAV-21JT5EU ,SASIU CP-005 ,proc STV2238D X43;jungla DW195C ;sunetTDA7287A;sursaDPM001TIA ,si poate ma puteti indruma spre depistarea acestui defect.MULTUMESC ANTICIPAT.

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Multumesc fumos pentru ajutor ,Tv rezolvat ,din pinul 42 de la proc nu iese nu iese nici H nici L ,am intrerupt traseul catr Q601 si am pus o rezistenta de10k intre baza Q601 si masa si a aparut sunetul ,cu riscul ca nu mai face MUTE, lucru care pe proprietarul Tv-ului nu la deranjat de loc.

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