Casio SK1 Won't power on . . .

[Luckyhat66]

Hello there. New to this forum. Figured there's a lot of discussion about old Casio's here, so I thought it wouldn't hurt to ask about my Casio SK-1. I just picked it up today from a thrift store for 3 bucks, and although I was pretty excited to fire it up - it didn't get that far. I can't get any kind of power indication nor will the power light come on. I've tried an AC adapter from another Casio as well to no avail. The inside looks okay? But I also don't know too much about electronics. Any help would be greatly appreciated!