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Adaptor bluetooth cu zgomot de fond

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Am un adaptor bluetooth cu mufa 30pin, pentru boxa docking.

Cand cresc volumul boxei peste 30-40% se aude un zgomot enervand de fond.

Am citit pe forum ca problema ar fi alimentarea adaptorului.

Am alimentat adaptorul de alta sursa, chiar si de la baterie, acelasi zgomot.

IC-ul este AS19AP1S214.

Mai pot incerca sa fac ceva pentru a scapa de acest zgomot?


Edited by dem3ntor
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Am intalnit genul asta de problema si cauza a fost prezenta unei componente DC variabile pe iesirea DAC-ului. Se manifesta cu un zgomot similar "curge apa". 


Am pus un filtru de mod comun si s-a rezolvat. Insa, asa cum zic colegii, nu prea merita efortul. 

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