It's not the easiest, and requires tools that are not too expensive. Most likely power related issues are going to revolve around the power socket. You need to be able to heat the motherboard to at least 190 degrees Celsius. It requires lots of patience and a fair amount of heat, flux and kapton tape. You will need to heat the ground plane which is honestly the toughest part of the job. After that, solder the new socket on. If the issue is due to other components, you will need to find a schematic for the Xbox one and use a multi-meter to find a possible issue. In all honesty, buying a used Xbox that works fully is very stress free. I have replaced a few sockets for the Xbox one, and it's pretty stressful with the amount of heat needed to free the solder from the ground plane.