Jiggle the power supply. Make sure it is plugged in to the input on the back. Secure it.
Scratchy pops coming from the left channel when I turn up the volume why?
I have a Counterpoint 3A preamp that I am getting this scratchy popping noise coming from only one channel (left) when I turn up the volume. I took off the faceplate and sprayed the volume pot with contact cleaner but it still there. I am surprised that with the volume that it not both channels? Any help would be appreciated.