Akai S1000 / S1100 samplers

Hello all, glad to be on board with the likes of you guys....
I have had an s1000 since about 1990.. just added an s1100 to my
arsenall of gear and was wondering the following...
Where on earth do I find a replacement backlight that is reasonably
priced? (i've installed this before)
Where can I get my hands on a manual for s1100?(can't find on akai site)
Why cant I install the scsi hard drive internally that works fine
externally, when I try it with an internal scsi cable it just hangs
there on boot up (does this require a special internal cable? if so,
what kind and where to get it?

Thanks to all who respond

Steve