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TV Platinium


clony

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Mi-a adus cineva acest tv cu linie orizontala pe ecran si lipsa unul din tranz din amplificatorul video. Prima data am zis sa rezolv cu linia. Am vaz ca era umblat la integratu de cadre posibil schimbat. L-am chimbat iara nu inainte de a schimba cond de filtraj dar acelasi rezultat linie pe ecran. Am masurat tensiunea de alimentare am +-14v. Ce ar mai trebui sa verific? Presupun ca nu are treaba amplificatorul video cu linia.Sasiu JM-2118P. Integratele sunt acelasi sau echivalente difera doar valoarea unor condensatoare. Asta e schema cea mai apropiata care am gasito.IC cadre avea stv9302b si am pus la78040.

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Am masurat cu multimetru in pin 1 la78040 si am 0.4v dar am observat ca dupa 2 3 min de functionare linia dispare(ecranul se intuneca cu totul) am obtinut linia(foarte slaba) pe ecran dupa ce am marit din screen.

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