Is it your only unit? That's too bad if it won't make any sound and it's your only unit. Because the thing is just too cool when it works...

In any case, to answer your first question, it's much more valuable as a whole, repairable unit than as a pile of miscellaneous parts. If you just want to get rid of it and let someone else hassle with the repair, then post on the For Sale forum or even on Ebay and see what offers you get. Those who really really want an empeg and are willing to take the risk that it can be repaired and are willing to pay to repair it will do so gladly.