I have two cubes I bought that ended up being in pretty horrible shape. One definitely seems to have been in a humid environment.
I've never powered these or attempted to clean them up. Check pics for condition. One is a 030, the other a 040.
$500 each, pickup in northern NJ.
I am also looking for a working cube turbo motherboard.
Seems jpegs aren't allowed - link for pics:
https://imgur.com/a/wy1oLmV