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Amplificator SONY TA-D507


marius.dumi
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Salutare !

 

Am luat de la cineva un amplificator SONY TA-D507 defect. Din ce mi-a zis el, ar fi stk-ul de vina.

Cum se poate verifica stk-ul ? Nu scoate niciun sunet, iar ledul de la volum clipeste in continuu. Nici releul din poza nu cupleaza.

Se merita sa bag bani in el ? Sau sa folosesc traful, radiatorul si carcasa sa fac altul ?

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Folosind schema interna a STK-ului se pot verifica finalii, astia sunt de obicei problema.

http://www.remcomplekt.ru/datasheet/1-pdf/ic/STK4162.PDF

 

Verifica de asemenea daca ai tensiune continua de iesire (masurat direct la pinii STK-ului)

 

Se poate gasi un STK din recuperari sau se pot adapta niste kituri de amplificare.

 

 

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Daca gasesti un STK original din ceva recuperari atunci e treaba buna. Altfel astea contrafacute de pe piata nu cred ca o sa te tina.

 

Pana a schimba STK-ul acesta trebuie diagnosticat... ca sa nu il schimbi degeaba. Credeam ca o sa te ajute instructiunile din postul #2.

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  • 3 years later...

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