![Cool 8-)](./images/smilies/icon/cool.gif)
Sorry, Firebug, not MCRU or RA.
![Dance :dance:](./images/smilies/eusa/dance.gif)
Yeah, but just think of it as an old marshall/fender/vox guitar amp turned up to 11.
Have you checked your mains reading? Having solar panels can add 10v or more to your mains when they are producing. If your mains is high to begin with, transformers could become unhappy with this.Fretless wrote: ↑Thu Jun 27, 2019 7:57 am Don't often get the chance to listen to my main system during the day, but one afternoon this week (trying to escape from 33-degree heatwave) I did. The BMU was humming quite loudly - which is the first time I have heard it doing that.
Then the sun went behind a cloud and the humming stopped.
Sun came back - humming started again.
I have quite a large solar-panel array on the barn roof at the back of the house and this is obviously kicking some noise into the mains here, this is also audible via the old NVA A40 that I have in the lounge - that buzzes slightly through the speakers to let me know when the panels are starting-up.