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mcmagic

Panasonik sa-ak40 f61 error

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Salutare dragi colegi.

 

Am o combina PANASONIC SA-AK40 de care nu prea as vrea sa ma despart asa repede dar am reusit sa produc un scurt circuit in ea dupa o curatre de praf iar acum nu mai functioneaza. am izolat defectul la un tranzistor notat q502 care are scris pe el C3940AR care este sarma. Am cautat acest tranzistor dar fara succes asa ca am pus unul mai mare ca si capsula bd143b cu care am facut combina sa porneasca dar acesta se incalzeste foarte tare si se arde.

Ma puteti ajuta cu un echivalent ceva sau daca aveti in stoc 2SC3940AR il pot cumpara(Preferabil Bucuresti). 

De asemenea as avea nevoie si de o bucata 2sd2395

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Daca doar Q502 ar fi problema (originalul este de 50V, 1A si factor de amplificare 120-240), nu vad de ce n-ar merge un BD139 (80V, 1.5A) selectat ca sa aiba factorul de amplificare asemanator cu originalul. Nu cred ca doar Q502 este problema.

Eroarea F61 se refera la functionarea defectuaoasa a amplificatorului de putere. Nu cumva s-a facut scurt la pinii integratului IC601 si s-a defectat acesta? Desi in acest caz n-ar fi trebuit sa se arda regulatorul de 15V (Q501).

Edited by sla
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