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Amplificator defect!


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Salutare stimati colegi ! De curand am primit de la cineva un modul de amplificare cu TDA 7294 ,facut dupa schema de mai jos si avand cablajul din atasament . Toate bune si frumoase , TDA-ul nu a pliciuit atunci cand l-am alimentat dar cand am masurat tensiunea pe iesire sa vad cat scoate insarcina surpriza :speriat 12 Vcc si 26 Vca ( fara semnal) ....La o privire mai atenta pinii 5/11/12 sunt rupti de la iesire din capsula..Ce poate fii de vina pentru tensiunile de pe iesire ?Ps: IC este nou , sau cel putin asa zicea cel de unde l-am luat va multumesc :101

Schema.pdf

dispunerea componentelor.pdf

Pcb.pdf

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