Yes poor thing. It may never play violin again but hopefully I won't have to use the phrase "He's dead, Jim"
I figured out where all the remaining caps are supposed to go in. The + lead appears to go to the tab of D501 on the other side. Next I'll doubl check all the caps to make sure it's soldered in firmly, correct orientation, not touching anything it's not supposed to touch, and no bridges or rogue solder blobs and to check if there's any short between 5v and ground. I still need to clean up the new solder flux and I am out of distilled water so the last step will need to wait. (and still waiting on new jacks, ETA end of August, NEC had to use uncommon design that isn't easily found locally after 20 years)
Also put in a new fuse. All that's left is to plug the LCD panel back and power it on.