Wii Balance Replacement Board Guide
This guide will help you assemble the Wii Balance Board - Battery Contacts Replacement Board
All parts needed are provided. There are 2 versions, one where you reuse the old contacts and one where you you use replacements.
First disassemble your Wii balance board: Ifixit Guide.
Assemble the diy kit as shown (long header parts up). If you have ordered th no battery contact version you only need to solder the button and fuse. At the same time desolder the cableconnector from the old pcb. If you reuse the battery contacts desolder them and solder them at the marked places.
If you reuse the old contacts you are finished here and can solder the cableconnector to your pcb and reassemble it.
With the new battercontacts use the grey batterybox to align the two pcbs as shown.
Solder the cableconnector to your pcb and reassemble it.