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profilo 4055-probleme sursa


chanito

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salutare stimabililoram o problema cu acest tv.sursa e cu TDA4605.imi arde fetul .a mers un timp apoi imi arde tranzistorul.am pus mai multe variante de fet dar se pare ca nu rezista.i-am inlocuit tda dar degeaba.tv asta e printrre primele modele de dupa anii 90.ce ar putea fi?

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Transformatorul chopper in scurt? Sau dioda,condesator, rezistenta din drena tranzistorului comutator(de obicei condesatorul)Sau rezistenta din pinul 2sau 3 arsa.

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Care b-e? Verificati prima data rezistenta din pinul 2 al c.i TDA4605 Aceea de 270-330k(se scoate un capat al rezistentei din circuit pentru a o masura) Am atasat schema Profilo sasiu SM1 -cred ca asta este ce cautati.

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