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invizible01

NIPPON EC21185

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Sasiu m35/m36Am inlocuit tr.linii ,a functionat cateva secunde si a cazut liniile!Tensiunea pe memorie mica 4.5v ,pe E tz q208 mica 2.5v si tensiunile se baza U1 normala si reglabia ,insa tens.de pe D833 fara bec 9.5v cu bec urca 13v.tens.de pe D830 fara bec 12,7 ,cu bec 14v!Nu reusesc sa urc un pic tens.mentionateAm inlocuit c-urile primar/sec. sursele de 9v,5v ,filtrajele ,zenerele ,memorie inscrisa ,tz.fara rezultat.Multumesc!

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Da finalul linii jos sau strapul care duce U1 la traful linii.Pune bec pe U1 si apoi spune ce tensiuni ai.Acolo in secundar sunt vreo5 -6 conzi electrolitici care trebuiesc toti schimbati

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Atunci curata bine placa de maglavaisul ala din zona diodelor si schimba si diodele redresoare pe ramurile acelea.

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Le-am schimbat ,am spalat tot cablajul,schimbat filtrajul ,puntea ,FET-ul ,MC-ul ,am intrat in ceata , o sa incerc cu o sursa suplimentara cu chopper ,am schimbat inclusiv c-urile ceramice.

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