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Nei 2044 R lipsa simbol afisaj


sxnel

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Mi-a venit la reparat un Nei 2044 R cam "bunic" poate o sa ziceti,insa asta e , "romania e saraca". Am rastru normal , doar ca atunci cand "apare" osd-ul , defapt apar doar benzile negre ,fara liniutele galbene sau verzi si cand e cazul rosu....deci nu are osd . ce si unde sa caut ca sa-l "aduc" inapoi ?cine stie ?

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  • atilalukinich

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  • sxnel

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afisarea simbolurilor pe ecran in timpul comenzilor se datoreaza unui oscilator intern (din PCA 84C640P)care are ca elemente exterioare R1337 si C1315 din pinul 28.Afisarea propriuzisa provine din pinii 22,23,24,25 de unde semnalele R,G,B si FB sunt aplicate CI TDA3561A cu stima

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