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ELFORUM - Forumul electronistilor

mivar model 14m2

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salut ,am acest tv care a venit cu sursa praf tea 2261 si bu 508 ars si dioda zener din baza bu. problema este ca tensiunea de 105v scade cu cca .20v in sarcina (zener de 3,3v n-am avut si am pus 3,6v) ,celelalte ramanand constante adica +9v si +24v ;tv functioneaza si asa dar la schimbare de program sau la cuplarea antenei sursa decupleaza si toate tensiunile ei devin zero... condensatori schimbati si diode din sursa si cel +video ; varog daca aveti vreo idee?schema nu o am decat la alt tip de mivar cu sursa cu tea 2261 dar alte tensiuni la iesire-

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