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ciuca paul

samsung cz-21m063n

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Va salut. Sasiul tip=T444S porneste ptr.un moment cu aparitia inaltei si tensiuni recuperate si se opreste imediat (2secunde) ,aparent tensiuni corecte ,pus memorie ff dar se comporta la fel.Am verificat ceva scurt,dar nimic deosebit.Rog ceva sugestii si schema intrucat nu am gasit-o pe netiar acolo unde s-ar putea, intervine antivirusul..

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Componente ce echip. sas. sursa 5q0765rt, multif.tda9351ps/n2/31308, cond.numerotate corespund si sunt ok,am precizat ca am inalta,iar daca erau cu probleme nu mai aveam inalta si intervenea protectia deci sasiul nu este acesta....

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D-nu Florin cr404s desii masurat atat ohmetric cat si pe capacimetru era ok in montaj aveti dreptate nu mai era.Prin acest Condens se preiau inpulsuri din colectorul fin linii ,totusi nu inteleg care este fenomenu? poate primesc ceva explicatii despre strapungerea in inpulsuri de tensiuni mari a acestor condensatore..

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    Fenomenul este foarte clar:strapungerea are loc in functionare,cand pe colectorul finalului linii(adica tranzistor),se afla impulsuri pozitive,axate pe B+,cu amplitudinea de aproximativ 1200Vvv.Ori capacimetrul/multimetrul/ohmetrul au baterie de 9V.................

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nu-mi amintesc cand am mai gasit  ultima oara asemenea fenomen ,inteleg oarecum problema dar in afara solutiei practice de substituire intreb,s-a inventat un aparat  sau o solutie de depistare a acestor fenomene? ,acest condens. se strapunge in impulsuri v v si nu in tensiune nu? gresesc cumva? 

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