Well finding a working replacement CD-ROM2 unit seems to be impossible, so I was thinking of selling my PC-Engine briefcase and buying a PCE Duo instead, well at lease if I can get a good price for it:
-PC-Engine briefcase with cover, original box, manuals and inserts
-Generic AV cables
-NA power supply modified to be compatible with this setup
-Original White PC-Engine system with original controller (just the system and pad)
-Defective CD-ROM2 unit which seems to work most of the time with CD-ROM2 games and skips most of the time with Super CD-ROM games (music basically stops)
-System card 3.0
If I can get a decent price for this, I'll sale it, if not, I'll keep it for collection purposes.
EDIT: Added pictures. White sheet of paper to show to white level of the console (don't know if it was ever meant to be pure white, but I know lots of people like to compare like this).