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maresmircea57

SHARP 54DT-25SC...

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Am un tv SHARP ch.CA1 care mi-a venit cu doua defecte: BU508DFI in scurt si teletextul care nu functioneaza .Prima problema sa rezolvat. Pentru teletext nu imi dau seama ce ar putea fi...proc. oare? Va rog o idee. Proc.=SDA5254-2 B001 mem.=24C04-smd jungla=TDA8842H smd

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Comutarea pe teletext se face, in partea de jos a ecranului apar niste benzi colorate iar sus in partea dreapta apare scris cu litere negre NO TELETEXT. In rest nimic.

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lipsa semnal txt , soft (adresa mem ) lipsa unei tens de alimentare >filtraj devalorizat ,polarizare a ci sau un stab. defect magistrala a ci ic2 afectata

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