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liviu_mad

tv teletech 11ak30

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salutare ma chinuie asta!

am gasit cadrele plesnite si c umflate , leam inlocuit si degeaba.

am ledul rosu in stanby si cand il pornesc se stinge ledul ri revine in rosu 

nu trece in verde

am tensiunea de 8v si pe bec 115v timp de 2s

nu am -1v in prefinal , am 1v

pe osciloscop nu am impulsuri de H decat creste nivelul de tensiune 2s

ce poate mai avea?

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Inlocuieste  C613 , schimbat cu unul nou .

Cu C613 scos , la comanda on ,  vezi cu oscul daca ai impulsuri in colectorul lui Q601 . daca nu ,  verifica alimentarea procesorului .

 

Bineinteles intai  conzii de care a zis colegul fane .C826 , si C623 .

 

 

Edited by vergil

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Sa nu cumva sa scoti c613 daca nu vrei sa ramai fara BU808, chiar si o secunda e de ajuns ca sa se arda.

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daca ai pus TDA8174AW nou, sa stii ca sunt rebuturi toate

eu am luat mai multe TDA8174A...trebuie pilit un pic radiatorul si potrivite terminalele

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tda8174a am pus si am rezolvet problema , am gasit si trasee intrerupte . 

multumesc tuturor pentru timpul acordat si ajutor

merge bine acum

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