Ancient NAD 114 stereo preamplifier service manual?


2019-12-17 9:43 pm
Alps 20KAX2

I found the service manuals in a few places... the pot is 20k Logarithmic

Japan Alps 20KAX2 LOG type Volume Potentiometer

I have the crackling problem - but I thought it could be caused by DC in the signal path - cos I got a crackling in the selector switching...
...and, apparently, NADs have a problem with the white goo turning brown and going conductive - but the 114 hasn't got a lot of that in the signal path except in the phono and headphone sections...

I'll tear my brown goo out and make lots of measurements before I consider replacing the pot.