Can't that unit be revived? I don't see why risking a donated unit would be a problem though
Yeah this stuff is getting insanely expensive these days, I bought Formosa Duel maybe 2 or 3 years back for like €200 iirc today it would be way more expensive than that (if we can even find one for sale that is). Rebel Star is still undumped and the only hope to get it preserved is to hopefully find a collector willing to get it dumped it.
Either way, you should definitely submit those fixes I know the driver still has quite some issues, but I definitely wasn't expecting to see sound working out of the blue like that.