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Functioneaza normal insa am un tiuit in trafo linii(chiar urlet),Cand actionez butonul screen tiuitul se amplifica.Am reglat la minimum posibil din screen nu mai tiue dar cand e imaginea pe fond alb povestea se repeta.Care ar putea fi cauza?era sa omit U1=123V

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Daca si fara fir tiue slab de tot,nu aveti treaba cu tubul ci mai degraba cu trafo linii,defecte mecanice(crapat ferita,destransa,contacte imperfecte in trafo la firul de screen,etc).Daca trageti usor de fir ,nu da sa iasa afara din trafo??P.S.-Sursa debiteaza tensiune ok?

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