[edindoors]

Sounds like it could be heat-related or a component on the edge of failing. I’d start by checking the capacitors in the PSU and on the FM Radius itself—sometimes they’ll work intermittently until things cool down or warm up. If you’ve already ruled out cables and overloading, I’d also try swapping in a different PSU just for testing.

It’s a bit like playing snake game: sometimes you think you’re in the clear, then suddenly you run into your own tail—you have to trace the whole path back to find the real cause.