legionaru Posted January 21, 2015 Share Posted January 21, 2015 sasiu 11ak56 Aleatoriu, imaginea trece pe rosu puternic cu cursa inversa; la lovituri foarte usoare pe placa tk sau pe gatul tubului sau chiar cu volumul mai tare aceiasi manifestare... Tubul este cu gat subtire, am schimbat soclul... degeaba. Lipiturile pe placa tk sunt ok, placa nu este deloc innegrita in zona tranzistorilor video de tipul c2482 Posibil scurtcircuit in tub? Link to comment
dan cod Posted January 21, 2015 Share Posted January 21, 2015 99% .Fa circuit separat de filament si va merge. Link to comment
legionaru Posted January 21, 2015 Author Share Posted January 21, 2015 nu am facut niciodata... cum se face? Link to comment
ovidiu grigore Posted January 21, 2015 Share Posted January 21, 2015 bobinati doua spire pe tr linii si alimentati fil tk din aceasta infasurare inainte separati leg fil de masa Link to comment
Guest flaviumihaimesaros Posted January 21, 2015 Share Posted January 21, 2015 intrerupi alimentarea filamentului pe soclu tk si izolezi de masa celalalt capat al filamentului.Pui doua spire cu un fir litat si izolat pe miezul de ferita de la trafo linii si alimentezi filamentul Link to comment
legionaru Posted January 21, 2015 Author Share Posted January 21, 2015 ok, multumesc, maine pe el! Link to comment
legionaru Posted January 22, 2015 Author Share Posted January 22, 2015 Am rezolvat problema; nu a fost tubul de vina, ci doua rezistoare respectiv r907(2k2) si r918(10k) faceau contact intre terminale. Clientul mi-a spus ca facea asa de nou, l-a folosit destul de putin, de-asta placa tk arata bine, fara semne de incins. Rectific, sasiu 11ak57 Link to comment
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