I am selling my XVI compact:
http://www.ebay.com/itm/321112409306?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1586.l2649 (http://www.ebay.com/itm/321112409306?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1586.l2649)
Good chance to get a X68k from a US seller
Have the capacitors been changed in that unit yet?
When I got this machine from a Japanese seller he said that he did change all capacitors. However, the problem with the volume being low might mean he missed some. Since the machine is still working fine I am not going to open it to verify... so all I can say is that it has worked great for the last 3 years (the issue with the volume was there from the start when I got the machine)
Probably just some leftover cap fluid under an amp chip or maybe a weak / corroded trace. Good luck with the sale! I know compacts are usually in pretty high demand.
Wow $660. I've been selling compacts to friends for $500 with keyboard/mice/controller adapter/video adapter/usb floppy drive, ram upgrade, and full recaps of mainboard and psu and sram battery replacement... Guess I'm too cheap hehe