NEED someone good with electronics!

I'm a graduate student living in EV. I have a digital piano, a Roland FP7 that's one of my favorite things in the world, but 8 of the keys stopped working. They're all right next to each other, there are 88 keys so I'm sure they're connected by 11 groups of 8 and I'm sure it's a simple connection issue, but it's a $2,000 piano and I'd rather have someone who knows what they're doing take a look at it. I can offer a small compensation. Thanks!