Thats no problem, in my case... I brickt my Wii, after that I installed a WiiClip V3 (WiiKey), load the wadmanager-dvd and erase the bad wad.
Cost:
Wiikey and Triwing Screwdriver + Shipping: 14,98€
WiiClip + Shipping: 24,99€
A new soldering iron: 7,99€
DVD's: 10,98€...