The FS-A1WX works perfectly (pics).
I upgraded the RAM to 256kB (with sockets).
I tested a MSX2 cartridge and a MSX2+ game (with V9958 graphics) from disk (pictures).
Also I tested the basic and successfully booted a MSX-DOS-disk (pic).
All keys are working perfectly.
It's easy to write MSX-disks in an USB-pc-drive with the MSX disk manager!
I changed the defective disk drive with a modified PC-drive and adapted the cable.
You have to press shift at startup if no disk is in the drive because the drive has no RDY-signal or you put an empty disk in the drive.
The WX needs 100V (Japan) and has a NTSC-video out + RGB-monitor-output (DIN8).
The manuals comes with this machine (but in not so good condition) (pics).
Price: 275 euro + shipping from Germany
The Panasonic will be shipped in bubble foil and very good padded!
No warrenty, no returns