HomePod hums
My HomePod hums while it is paused or while I talk with Siri. It's not any loud but it's not so quiet even. I'd like to know if it is normal (some audio speakers produce some similar hum noise) or if it is a hardware problem.
It starts right when you ask Siri for anything for the first time after a longer time (8 minutes +) and stops after 8 minutes again. I don't speak about any loud and paused AirPlay stream which may cause that or anything.
It's also present during reset. Again, it starts with Siri saying "Your HomePod is about to reset…". So basically it is present permanently starting with any action (Siri request or pressing play) and ends after 8 minutes which may be some deeper stand-by mode maybe?
HomePod, iOS 11.4.1