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tv LG Imagine cu cursa inversa si nefocalizata

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tv LG are imaginea nefocalizata si cu cursa inversa pe ia. La reglarea tensiunii de focalizare imaginea nu devine clara si se comporta ca si cum ai regla U G2 si apare si cursa inversa pe imgine .Cu reglare UG2 mai mica sub 200v dispare cursa inversa dar imaginea tot nefocalizata si intunecata .E posibil sa fie tubul? ARE CINEVA O SOLUTIE? Va multumesc!

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