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ELFORUM - Forumul electronistilor

Problema NIPPON EC1427


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Salut!

 

Va rog sa ma ajutati si pe mine cu un tv sport NIPPON EC1427.

A suferit un soc de tensiune iam gasit defect int dupa sursa 44608p40, TZ c2688strapuns E-C. Dioda DZ8v2. 2 tranz c1815 strapunse, la fel TC 144E(Lam inlocuit cu in c1815 cu 2 rez de 47K)

Si tot nu vrea sa plece imi sta ledul aprins si nu porneste imi tachaie in trafo linii. Iam pus bec pa tensiune de colector final linii sta becu un pic aprins si am tensiune de 30V.

Am deconectat si tensiunea care merge spre trafo linii si final linii si am conectat becul pe iesirea din ciopar si mi-se aprinde intermitent becul la o tensiune de 50/60V.

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Q832 am pus BC639Q831 am pus BC639Q833(tranzistor digital) am pus BC639 la care in baza am pus 10K de la tranzsitor la placa(unde era baza) MC44608K2996-FETul din sursaD804-1N4148D840-Dz6V2optocuplor -TLP621Cam astea se duc la M35 cand il priunde traznetul.

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  • 5 years later...

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