Hello.
Need help please for AMC CVT 3030.
Power amplifier works fine.
Tested via CN303 and CN304.
Preamp is very load and crackling sound on both channels.
Phones Amplifier is also load and crackling.
+ & -15v.....ok.
No bad soldering joints or bad contact.
SM
https://www.manualslib.com/manual/1002386/Amc-Cvt3030.html
Need help please for AMC CVT 3030.
Power amplifier works fine.
Tested via CN303 and CN304.
Preamp is very load and crackling sound on both channels.
Phones Amplifier is also load and crackling.
+ & -15v.....ok.
No bad soldering joints or bad contact.
SM
https://www.manualslib.com/manual/1002386/Amc-Cvt3030.html
Muting circuit 🙂
I have never tried anything other than the J105, I cannot answer you, on the other hand that both are dead, it is more than surprising, you are sure that it is not the protection circuit in him who are you having trouble with ?
you have all the voltages on the diagrams, you can look at the side of the protection circuit and check if you have the right values and test:
2n2907 Q317
2n2222 Q318
1000uF/16v C325
zd 302
But start by checking the voltages against the diagram
I have never tried anything other than the J105, I cannot answer you, on the other hand that both are dead, it is more than surprising, you are sure that it is not the protection circuit in him who are you having trouble with ?
you have all the voltages on the diagrams, you can look at the side of the protection circuit and check if you have the right values and test:
2n2907 Q317
2n2222 Q318
1000uF/16v C325
zd 302
But start by checking the voltages against the diagram