So is it maybe worthwhile considering using a decent linear power supply rather than the supplied smps for a piece of electronic equipment thats a keeper?
no idea if it helps or works but been using it on rubber for a couple of years:
https://www.google.com/search?client=firefox-b-d&q=spanjaard+red+rubber+grease
I know zilch about these things but can you install 3 single phase filters instead of one 3 phase filter. ? Might be cheaper and definitely cheaper when something blows.
Now that brings back memories. Visited Daan way back as a newly graduated guy. He demo'd the Annihilators and the Reference IV's. The sound blew me away and very nearly made me spend money I didn't have. Eventually walked away with a pair of Reverence II's. And, yes, it was a Dire Strait's song...
What Vleisman said.
In a wall switch you should find an earth wire (green/yellow?) and two reds. The live red coming to one side of the switch and the switched live from the other side of the switch going to the light. If there is a neutral there I would be worried, as it has no purpose there...
I do suspect that Signal is the more secure of the 3, Whatsapp, Telegram and Signal. The trouble with Signal is that it is so secure that Signal records are only kept on your phone and can not be backed up by 3rd party applications.
So, do hard reset or lose your phone and all your Signal...