I've got a Total Carnage PCB (game board) and sound board, with volume control knob. Came out of a Smash TV cabinet that was converted to Total Carnage. Also comes with conversion kit manual. The game plays "blind"- that is, the monitor on the cab does not work, and I have no replacement monitor, so I can only test it by starting it up and hearing the sounds. After a boot sequence it does indicate coins have been added and I seem to be able to start to play a level (a few times it did seem to hang on a sound in the intro sequence). Just to be clear- this is being sold as is, as I have no way to test it beyond just listening. Just not a game I can hang on to at this time!
Here is a (boring without a monitor) video that shows the sounds the game makes:
$45 Shipped to US, payment via paypal. Any questions let me know! \
EDIT: SOLD