Soldato
I keep putting off sending it back because i've become obsessed with Fallout 4. I've found by turning it off at the wall when i've finished using it, it will then work next time (sometimes I get the above error so hold down the button on the front and try again). Once it dies properly i'll RMA it (again). The most annoying thing is the constant wind up I get from mates telling me i'm an idiot for selling my PS4 Pro to get an xbox.
As @hardkore said, just send it back now, why use something that keeps playing up and will likely get worse, least you will have your ps4 to play while the exchange is processed.