Hacking NDS n R4 scheme

[invinitysky]

hi all,im new coming here n i,m sorry because my english is not good.i,ve a problem with my NDS,it can not read R4,i,ve to change a new one but the problem is the same,so i think the problem is my NDS.so i want to repair it my self,but i dont the scheme of NDS,my NDS is an old NDS (fat).
where can download a scheme of NDS???

thanks all

 

[gary2010]

are you sure you put the right firmware on the sd card with the games. if the ds isnt reading the card at all it will be something to do with the contacts in the card slot, does the ds read normal games fine?

 

[YayMii]

Eww, R4...

If normal games work on your DS, just get a better cart (Acekard 2i).