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ELFORUM - Forumul electronistilor
TIMIS STEFAN

AEG MC 4613 DVD

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Colegul surubarila are dreptate daca pe pinul on/off ai 0.62v sursa nu scoate nimic pe iesire, ma tem ca la tine e defecta partea digitala a dvd-ului, de aceea nu da comanda la 278R05, da si tu mai multe detalii daca vrei sa te ajutam....

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In pinul 4-CONTROL trebuie sa fie nivel logic H ca sa "porneasca". La 0,62V e blocat , vezi de unde vine comanda. Verifica ce a zis d-l Costica apoi lasa pinul 4 in aer (daca n-ai sursa externa) are acelasi efect ca si comanda ON. Sa ne spuna daca se aprinde ceva : led st-by , display.Daca nu , sunt probleme in sursa.

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Va rugam de nu ma ajutati ce detali sa va mai spun ?

La asa ceva nu gasesti schema, pune niste poze cu placile electronice din interior si seria de pe ele, ca sa ne dam seama ce ai tu acolo.....Ti-a mers vre-o data sau asa ai luat dvd-ul defect?

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Incearca sa identifici microcontroller-ul si spune ce scrie pe el.Vad pe traf 3,3Vca banui ca are afisaj VFD iar la alimentare sunt vreo trei punti redresoare.Ce tensiuni ai p'acolo ? Langa cuple e ceva notat , verifica tot ce scrie ca e tensiune 5V , 12V etc.

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