Hello guys, this is my first post here. Been a long time lurker.
Recently acquired a nac82 (paired with nap250 and hicap olive), when i press mute, there is a audible mini pop from one channel.
However I reinserted all the plugs several times to clean them and the pops disappeared. Went to get my nap250 serviced which took 3 weeks, and now when i plugged it in, the pops are back. Is this due to dirty plugs? I noticed the paddle link bridge for the power supply on the 82 has quite a bit of black oxidation on it, so much so only half of the plug can be seen with metal.
I have had the same problem last summer. My speakers popped when the mute button was pressed, for unknown reasons. I didn’t mute the system for a few weeks (I was afraid the loud pop could damage my speakers). A month later I decided to try again and the loud pop was gone…
Quick update: Even after cleaning the plug, theres still a pop from the speaker when muting. One interesting thing is - when the system is first turned on, it is a small pop. After a few hours, it becomes a click.