The green LCD display uses an EL (Electroluminescent) backlight. After 25+ years, almost every original SF2 has a dim or completely dead backlight. You can replace it with an aftermarket LED upgrade kit (available from synth repair specialists). Don’t let a dim screen scare you off—it’s fixable.
On floppy disks, ZIP drives, and early CD-Rs, a shadow economy thrived. A teenager in Ohio would sample a single note from a Juno-106, loop it poorly, and distribute it as “SuperSaw SF2.” A session musician in London would record a multi-velocity grand piano, spend weeks mapping it, and then vanish from the internet, leaving behind only a broken GeoCities link.