If you want to replace the WiFi Ribbon Cable inside your 2nd or 3rd generation iPod Touch then you will quickly learn that the cable is connected to the Logic Board with some sort of adhesive. This isn’t any glue though, it’s special conductive tape. The reason it’s special is that it only transfers the electrical signal down the Z-axis. It’s the only solution to replace the cable in your iPod Touch.
Buying this tape (3M 9703) is very expensive, and you in no way need a whole roll of it. I searched on eBay and have found one seller in the UK selling 20cm strips. That seller just so happens to be me! GO GET YOU SOME TAPE
Once you’re sorted for tape there are numerous videos on YouTube describing the fix, but I found this one probably the most in depth. While it doesn’t have any instructions on opening the case, it does explicitly describe the taping process.
The intricacy of this fix mustn’t be under estimated, you must take your time and prepare the surfaces thoroughly before applying the new tape. 3