Thanks guys. Well…looks like i have TWO bad power supplies :/. The one that came with the 4k+ is totally shot, neither will boot with it, which I knew. But what threw me off was the one that came with the 4K still allows either to boot but intermittently which means it on its way out. Both register the proper 5V with a meter but I assume that drops under load.
I was able to find a pair of PS in my box of spares that had the right specs including the barrel so I didnt have to solider anything. Both units are now back up and so far so good.
How close to the 2 amps do the Vero’s actually draw under load? Could it be that they are constantly up against the max which wears them out quickly? Or are these just lower quality? Not trying to be insulting, its just I spent a lot of time trying to diagnosis this. Having both go around the same time made it really tricky. I suppose it could be some kind of power surge or something weird to hit the house but our power has always been very clean and nothing else seems to be affected.
In any event, glad both units a still good.
Ernie