Fender 85 guitar combo amplifier -- the kind favored by Radiohead's Jonny Greenwood as a pedal platform.
The clean channel works but the distortion channel does not. I took it apart to fix the distortion channel but got busy/lazy and never finished.
If you just want to use the clean channel as a pedal platform a la Jonny, you just need to put everything back together and you should be good to go.
If you want to fix the distortion channel first, it comes with the chip that needs to be replaced. You'll just need to desolder/solder the chip on the circuit board and replace it.