Shutting down my system often and Hum

[Suedkiez]

@Rosami

I wonder if the power utilities are introducing DC into the line and that is what causes the hum problems

Yes this is one of the possible causes.

A Starting Guide to Naim Hum/Buzz

This subject seems to come up very often here, so having the issue myself, and after a lot of reading, I thought it might be useful to have a simplified starting place to visit for these issues, bringing as many of the different causes mentioned in this Forum together. There are many more detailed items on this forum that you can then lookup specific areas. Here we are referring to Hum/Buzz from the Naim PSU/Amp units themselves, and NOT Hum through the speaker (which could be more related to a…