FYI.

All of this stuff arrived here last week, and all was "as advertised".

The Mk2a unit had five pins of the IDE header lifted (no longer making contact with the main PCB). I soldered those back down and now that player works perfectly!

The Mk2 unit is the subject of my recent thread in the Tech/Troubleshooting forum. A chip in the PSU (Power Supply Unit) circuitry had died. I've replaced that chip, and now that player also appears to be working fine.

Both hard disks (one from each player) are also okay, but the Mk2 one needs to be remounted with spacers to avoid the death by spindle pressure syndrome.

Overall, a good deal for both of us, I think!

Cheers