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problema la un samsung ,sasiu KS7A

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Guest trecatorul

Salut meseriasi.Problema la un Samsung CW 25M064NRXXEC sasiu KS7A.Tinde sa porneasca o secunda, tensiunea +B este de 130v dar scade brusc la 80v.Daca cineva s-a lovit de o astfel de defectiune ,rog sa-mi spuna si mie.Multam.

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Guest trecatorul

La fel se comporta si cu tranzistorul final si cu bec.O sec. filamentul becului lumineaz intens iar tensiunea pe colector e de 130v dupa care scade brusc la 80v.Am repornit tv-ul de mai multe ori sa verific si celelalte tensiuni care ies din sursa.La fel ,o sec sunt normale dupa care scad brusc.

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Guest trecatorul

Am schimbat condensatorii, tensiunea pe C 803 este de 310v.Se comporta tot la fel.Am atins STRX6750 si am descoperit ca se incalzeste tare.E normal?

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