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ELFORUM - Forumul electronistilor

Daewoo,sasiu CP-485F

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Tv nu porneste.La ponirea din buton,tensiunea urca pana la 125 V,apoi cade,ledul palpaie rosu-verde in cicluri de 1 sec.Am "fortat "circuitul st-by,teoretic,aparatul porneste(BO lucreaza),dar atat,led-ul palpaie in continuare.V-ati confruntat cu aceasta problema?PS:-procesor=VCT 3834 -FI =TDA 4470 -sursa =STRF 6654 -BV =TDA 8358

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Incearca sa schimbi optocuplorul si sc110n...sau incearca cu o sursa externa de8v in locul lui sc110n si vezi dc iti pleaca....dc nu iti pleaca incearca sa polarizezi optocuplorul cu 1,5v si apoi sa masori cu un ohmetru sa vezi dc iti deschide fototranzistorul din el.trb sa fie in jur de 50-60ohmi park.. :tonqe:

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