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defecte tv lg


Guest meryen
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Salutare tuturor este pentru prima oara cand intru pe forum si am o problema la un tv crt lg cf-20d60x. Cand conectez tv la retea ledul de stand-by se stinge. Am inlocuit tranzistorul c5250 ce comanda transformatorul de linii si acum merge 5 secunde si inta in sand-by. :cry:

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Am pus la loc tranzistorul c5250 si a plecat tv. Dar cand deconectez de la retea chitae sursa.Cu timpul se pIerde culoarea la tv Si isi revine cand dau pe alt post.

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  • 1 month later...

:cry: Sunt disperatAm schimbat cei doi condesatori de pe b+, si cei din sursa de alimentare si a mers in stand-by 5 secunde. Am verificat si schimbat punte redresoare si ic strs5707 sunt defecte, scurt pe tranzistorul din interiorul integratului si scurt pe punte a ars siguranta th4 250v. Am verificat cu becul intre colector si emitor sursa acum pleaca. Am verificat tranzistorul C5250 si e bun. Am verificat bobinele de deflexie . Intra sursa in limitare.

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