I'm in need of some explanation as my Pi is acting weird (to my limited knowledge at least)
It will only boot when i suply it with 5v/GND through the 3.3/GND GPIOs.
The pi boots when i connect 5v to the 3.3v pin (with only the yellow led blinking, nothing on the red, and gives the little thunder icon on its raspbian desktop)
It boots normally with the expected behavior on both leds (and no thunder icon) when i connect both the micro usb charger and the second power supply to the 3.3v+GND.
Tried two different micro usb power supplies alone, nothing, they only light the red led (no yellow led blinking). Tried 5v+gnd (from a 16x relay board) to the 5v+GND, nothing.
The 5v power i am connecting is from this Powered 16x Relay board (stack exchange link)
It's a relatively new setup (a month old) and it's been working ok till today that i disconnected the power from the relay module to reboot it.
Have i fried something?
I imagined the micro USB might be damaged, but how would that explain the fact that i need to power it through the 3.3 and not the 5v?
How can i make it boot with just its official power supply again?