My Google Home Max blasts out loud static/white noise intermittently and will not stop

[oohmama]

Hi all - I've had my Google Home Max speaker with an Aux cord plugged into it for a few years now, but this problem started when I moved about 3 years ago: at random points during the day and night, the speaker randomly starts blasting white noise/static at a very high volume for no apparent reason. The only way to stop the sound is to unplug it or tap the top to change inputs. I suspected this was an electricity/current issue with the building itself.

I moved apartments again last year and hoped the problem would resolve itself, but instead, now the same startling static sound comes out of the speaker when I turn my ceiling fan in the same room on. This confirms my suspicion that this is a an electricity/current issue, but does anyone have any idea how I can solve this problem? Is there something I can plug in between the speaker and the wall to help regulate the current such that this doesn't happen? The sound is not only startling but it's definitely something that is damaging the speaker itself over time.

Any advice would be appreciated! Thanks.

[MplsCustomer]

@oohmama 

What is the Aux cord connected to?  Are you using the power cord that came with your Google Home Max?

[oohmama]

Power cable is the original Home Max cable. At my previous place where the issues began, the Aux cord was connected directly to my LG TV via an optical-to-analog converter box. My current setup is the aux cord going through the same optical converter box but is now connected to my amp (which is connected to the same LG TV).

[MplsCustomer]

@oohmama 

Have you tried unplugging your Aux cable and then turning on the ceiling fan, just to see if the source is the Aux input?

[oohmama]

Tried this, the sounds stops completely when I unplug the Aux so it seems to be related to something on that side, as opposed to the power cable itself.

[MplsCustomer]

@oohmama 

I'm just an amateur user when it comes to audio equipment. We have a very small Amanka Digital Analog Converter box that converts the audio signal from our television to our almost 50-year-old stereo receiver; it 's worked for years, but I don't know how.

MAYBE it's something related to your optical-to-analog converter box, since that's been in use since you've had the issue. I suppose you could try a Google search about the issue, including the brand name of your converter box. Or maybe another customer with audio experience will chime in here. Or maybe it's something unique to the combination of your converter box with a Google Home Max.

[oohmama]

Thanks fore the advice, much appreciated. Yeah I'm beginning to think it has something to do with the conversion - the sound coming out of the speaker definitely sounds like a random garbled signal trying to push through, which would be consistent with the converter messing up the optical to analog transition (obviously due to quick voltage changes). Will keep experimenting and researching this and hopefully find a solution - a voltage regulator may help here.