bonjour , j’ai récupère un ampli kenwood ka 3500 dans un très mauvais état, en effet un coté semble défectueux puisque même en déconnectant les transistors de puissant j’ai une tension en sorti environ 30v j’ai vérifier les drivers ainsi que tout les petit transistor tout a l'air correct ????
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In English, SVPhello, I recovered a Kenwood ka 3500 amp in a very bad condition, in fact one side seems defective since even by disconnecting the powerful transistors I have an output voltage of around 30v I checked the drivers as well as all the small transistor everything looks correct ???? 🙂
Please check both of the +39V and -39V power supplies, are they correct?
How about the two 3A internal fuses, are they good?
How about the two 3A internal fuses, are they good?
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Next thing is to start checking the voltages and comparing them both to te functional channel and the values in the service manual.
hi finally I deconeter vr 1 k and voltage returned to normal at the output bizzar right? to be continued 🤔