I picked up this Nano Muff that has a germanium diode added in. It had a broken foot switch.

IMG_1318 by Hentai No Baka, on Flickr
Getting the switch off the PCB sucked, but I got it off.

IMG_1326 by Hentai No Baka, on Flickr
New switch came in and got it attached with a little work. Plugged it in... and no sound. It lit up, but no sound. I looked it over and noticed the ribbon connecting the switch PCB to the main PCB had broken off. (DAMN those little wires are weak.) So I took it off and manually connected six wires to replace the ribbon.

IMG_1535 by Hentai No Baka, on Flickr
Works great and looks great! Has a really meaty fuzz to it.

IMG_1541 by Hentai No Baka, on Flickr