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Egalizator 3 Benzi BM387


Angel-boy

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Salut , am cumparat mai demult un egalizator 3 benzi corector de ton , cu un circuit BM387 si de curand l-am probat si nu mai merge .

 

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Poate stie cineva cu ce pot inlocui circuitul sau ce altceva ii pot face . Multumesc !

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Salut! Inainte sa schimbi integratul,verifica toate lipiturile (mai incalzeste-le o data)-este posibil sa ai lipituri reci.BM387 este echivalent cu LM387.In ce sens nu merge? Nu se aude nimic sau se aude foarte distorsionat?

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Lipiturile le-am intarit , am controlat montaju . Nu se aude nici un fasait , nu scoate nici un sunet... il alimentez , nu este in scurt sau ceva , pur si simplu nu se aude nimic !

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ar trebuii sa mearga cu tl072 sau ne5532 sau orice opamp stereo, nu mi-am dat seama de pe placa, dar esti sigur ca nu are nevioe de tensiune simetrica?

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Inainte mergea , ca l-am folosit un timp , alimentat la 12 v se aude perfect . nu gasesc date despre circuit ( IN OUT etc ) sa vad ce ii pot pune in loc. :smt022

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