David Harris wrote:

Morning all,

My trusty old NAD 3020a has stopped working properly. Prob somewhere
between vol control and preout/in. Suspect J111 muting FETs. I have a
reasonable copy of the cct diag, but cud really use a PCB layout to
help me finally fix this. Ill probably replace all those old drying
caps while Im at it.

Anyone ?

I got a diagram with my 302 when I bought at a modest cost, try asking NAD.

You may want to fix the RIAA correction while you are at it, NAD uses an
interpretation of the RIAA norm that leads to a 3 dB boost at 50 Hz, also
real high end stuff such as my old Audire preamp has had that aberration

DH

Kind regards

Peter Larsen