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ELFORUM - Forumul electronistilor

TV Panasonic sasiu Z7

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Defect caracteristic-la pornire cupleaza releul,imediat decupleaza si ledul palpaie.Dupa 10-20 de incercari TV porneste si merge fara probleme.Daca opresti si repornesti,totul in regula.Deci pare C uscat.Am schimbat C-urile mai importante,1000-470m,dar nimic.Am refacut lipituri CI cadre,tot nimic.

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Treaba rezolvata.Am reusit sa masor tensiunea video cateva secunde-240V.Atunci am luat problema din capatul celalalt.Am tensiuni marite din sursa principala,din cauza asta imi blocheaza proc-ul alimentarea.Am schimbat C-urile de linga STR,si TV porneste fara probleme.Am ignorat primarul sursei principale,fiind-ca sursa pornea,m-am concentrat pe secundar.Este o sursa cam incalcita la acest sasiu.Interesant sint in primar doi condensatori de 100m legate in serie.Aveau cam 90m,iar cel de 10m cam 8m,deci o pierdere cam mica.Deci la sasiul Z7 daca porneste sursa principala si imadiat se opreste,si ledul palpaie,cauze principale-pini CI cadre cu lipituri proaste-CI cadre in scurt-2C-uri de 100m si unu de 10m din primar sursa-R811 din primar intinsa.

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