KAM TNC. Owner said it worked for 30 minutes when he purchased it a long time ago. So far:
LM7805 +5V regulator
LM79L05 -5V regulator
PN2222A NPN GP Transistor
Still waiting for the LM79L05 but if I inject 5V it talks to me via its serial port. A good sign.
Replaced the LM7805 with a DC DC converter.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko