Here’s a curious idea: if your device has an unpolarized plug for it, is there any point to turn it over and trying it in the other orientation? It seems unlikely, but some claim it may eliminate interference!
Here’s a resource that discusses the issue:
https://www.eetimes.com/the-myth-of-the-neutral-wire
In other words, there may be some truth to this, though it is not a recommended approach to solving interference issues.
