audio servo driver

I've just started working on writing software to use a Raspberry Pi an an audio servo controller to control the jaw of a skull (filling the role otherwise filled by a Scary Terry type board, or Jawduino or Wee Little Talker). The code will be released as free open source once I've got the...

One of my 2-year-old ST-200 audio servo driver boards has suddenly crapped out on me without any warning. No apparent damage, power LED fails to light, no servo response. I tried powering it alternately by battery and wall wart but with no success. I'm guessing it might have died for some...