I use a Raspberry Pi Touch Display that I connect like shown in the following picture to my Raspberry. The black and red wires are connected to thee GND and 5v pins respectively. Now I want to physically turn off the display while the raspberry is still running.
In the future, I'd like to use a switch for that. But to test it, I just tried unplugging the red/+ wire. Unplugging the wire turns the display off as expected. However, if I plug the wire back in, the display is not turned on again. Why?