what motherboard why does the issue damage the mother board i mean if my usb port gets broken i cant fix it only fix the port like how much do i have to pay or i must change the whole board ( am in a country i didnt purchase the n900 from ) thats why im concerned i dont have warrenty here !! what do u suggest and btw i did grind my charger pretty well does that fix the problem permenantly and btw i looked the the usb port of my friend and his looks much more solid and more inside the body case then mine why is that does that mean mine have a failure or its the same thanks