Guest scllipici Posted November 9, 2010 Share Posted November 9, 2010 Am un amplificator auto Sonavox S12 2x150 e model mai vechi.. avea ars un final BD 204 l-am schimbat si o rezistenta de 4,7k am schimbato si pe eaproblema e cand il pornesc se stinge se se aprinde repetat la interval de o secuna si se aude in acelasi timp in boxa poc poc poc repetat .. Are cineva idei despre ce ar putea fi? Link to comment
djdansmart Posted November 9, 2010 Share Posted November 9, 2010 Din ce il alimentezi cand faci probele? Poate ca nu e suficient de puternica alimentarea si de asta iti face asa!Banuiesc ca e cu convertor nu? Link to comment
Guest scllipici Posted November 10, 2010 Share Posted November 10, 2010 Am un transformator..dar nu cred ca e din alimentare ca i-am dat si 9 v si 12..si 14 si tot asa face.. Altcineva nu are vreo idee? ca am mare nevoie de amplificator.. multumesc anticipat Link to comment
ari_panterra Posted November 10, 2010 Share Posted November 10, 2010 cum adica ''un transformator'',nu ai si punte redresoare si condensator de filtraj care in total formeaza o sursa de curent continuu?!transformatorul ''lucreaza'' doar cu curent alternativ.cam ce putere are ''transformatorul''? Link to comment
Guest scllipici Posted November 11, 2010 Share Posted November 11, 2010 am gresit exprimarea,e vorba de un AC/DC adapter, input 230V output 3,4.5,......,12 v curent 500mA Link to comment
emilberculescu Posted November 11, 2010 Share Posted November 11, 2010 Chiar daca are tensiunea de 12V la cei 0.5A ai alimentatorului nu poate functiona.La curentul si tensiunea asta poate un amplificator de 1W , simplu cu BC-uri.Parerea mea :Incearca-l la un acumulator auto daca nu ai un alimentator cu curent de iesire mai mare. Link to comment
Guest scllipici Posted November 11, 2010 Share Posted November 11, 2010 de ce amperaj as avea nevoie? vreau sa il folosesc in casa nu in masina. Link to comment
Guest scllipici Posted November 11, 2010 Share Posted November 11, 2010 pff... l-am legat la un alimentator de sistem 5.1 ..a puscat un condensator pana in tavan si s-au incins finalii.. si asta in timp scurt(20 de secunde) Link to comment
ionut20 Posted November 12, 2010 Share Posted November 12, 2010 cat scotea alimentatorul de la 5.1? Link to comment
remus68 Posted November 13, 2010 Share Posted November 13, 2010 pff... l-am legat la un alimentator de sistem 5.1 ..a puscat un condensator pana in tavan si s-au incins finalii.. si asta in timp scurt(20 de secunde)Amplificatorul trebuie reparat... de cineva care se pricepe! Link to comment
Guest scllipici Posted November 13, 2010 Share Posted November 13, 2010 alimentatorul scotea 14V si 2,5 A ... cred ca renunt la amplificator... :( Link to comment
remus68 Posted November 13, 2010 Share Posted November 13, 2010 a puscat un condensator pana in tavan si s-au incins finalii se poate sa-l fi alimentat invers... oricum, trebuie dus la reparat. Link to comment
Guest scllipici Posted November 13, 2010 Share Posted November 13, 2010 si daca se schimba condesatorul problema? se rezolva??? Link to comment
remus68 Posted November 13, 2010 Share Posted November 13, 2010 Nu. Sigur trebuiesc inlocuiti si o galeata de tranzistori... eventual si integrate... Link to comment
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