Can anyone help?
My Pi 2 is powered using a 5v 2.0 amp usb PSU.
I've only just realised that the colourful rainbow square in the top right hand corner of my screen isn't just an innocent 'busy' icon, it's actually a warning telling me that the Pi 2 isn't receiving enough power!
So I swapped out my PSU for another rated at 1.5amp and this gave the same results, little rainbow square flashing on and off.
Regardless of which image I use I always get this warning.
To cut a long story short, I have six 5v USB psu's, all of them (according to the Pi 2) aren't supplying enough power. 3 of the psu's have removable usb cables and I've replaced these with good quality cables that I bought from Maplins but it's still the same.
I know I can disable the warning in the config.txt but that won't help as I intend to overclock my Pi and whenever it detects a power issue it automatically reduces the CPU clock.
I have removed everything from the Pi. HDMI (connected via composite), LAN, Keyboard and mouse and still I get the power warning.
Even when I use my powered usb hub to power my peripherals the Pi claims that it is being under powered.
Could I have faulty hardware or should I just buy a 3amp psu?
Can someone recommend a USB cable and 3amp PSU that is guaranteed to work, preferably something that can be bought on the high street and not online.