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Am un osciloscop H3015 . Functioneaza foarte bine sant multumit de el . Dar ca orce apararat are o problema . La oprire , inchiderea spotului se face cu un punct luminos , de vreo 3-4 mm in diametru , care se face oval , in acelasi timp cu devierea spre stanga .Osciloscopul functioneaza foarte bine dar ma sicaneaza aceasta problema . As vrea sa-mi spuneti daca e normal sau nu . Din cunostintele mele , as zice ca nu e normal .Daca a-ti putea sa-mi spuneti si cauza acestui defect , pe care am incercat sa-l inlatur , dar nu am reusit . Atasez schema amplif X , a alimentatorului , si o schema generala de conexiuni .Va multumesc anticipat .

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