Motherboard Problem

[AC Question]

I downloaded apps and updated my Note Edge last January then it started rebooting and hanging. Now it won't even turn on. I got it checked and they said it was the motherboard. What are the reasons why the motherboard gets damaged this way and is there a cheaper motherboard I can purchase to replace the destroyed one?

 

[Rukbat]

1. Electronics fail. Why? Multiple reasons, too many to list here.

2. The only manufacturer of a particular motherboard is the phone manufacturer. You might save a few bucks buying a used one, but it usually doesn't pay.