Is the XB1 even non-hd?
Also I find it rather insulting for them to give a 14 day free trial of XBL gold for new members only after people shell out $500..
Best possibility would be for someone to find a cheap way to have the XB360 controller function on the One
The motherboard did short out which caused the sparks. You must have shorted something when you disassembled it. The specific ic cant be know because now you have a burned ic and a short somewhere.. sell for parts