Hello, in a spectacularly boneheaded move, I have damaged my Duemilanove board. I absentmindedly connected 17 volts to the breadboard +- lines while forgetting the Arduino GND and +5V were also connected at the other end. I realised something was wrong as soon as the power LED lit up on the Arduino and I immediately disconnected but it was exposed to the voltage for a second or two.
Now, when I connect to the computer the power LED lights up and when I upload sketches the RX blips but nothing further happens and eventually I get a "programmer is not responding". Is there a chance I might have burnt something minor and replaceable on the board? Are there any simple steps I can follow to find that out? Or should I simply not bother and get a new one?