I designed and ordered some flex PCBs from Oshpark to make it easier to tap into the test points on the Gameboy Player.

My designs are simple - I found a couple of minor issues where I got the alignment of a couple of pads out and I could have taken a bit more time to include a few more test points, routing the PCB(s) around other components.

I found it fairly easy to solder the boards in and they'll make it much easier to solder wires to the test points, as well as providing some much needed mechanical strength to the soldered connections to the test points. I can also tap into some of the test points with pigtail clips before committing to soldering wires.