I received the "2N6073BG" and soldered it onto the protection circuitry board and voilá, no fuses blown and it's still playing!
I'm going to let it play for a few hours to make sure nothing overheats. Such a beautiful piece
https://i.imgur.com/R69CONe.jpg
Again, very thankful for your help! There's still kindness in this world.
I'll see if I can edit the tags for this thread so that others can find the thread and make use of it as well.