I believe the MPP uses Linux as the basic operating system. I have several MPP's. I lend them to students, and put their stuff on USB drives rather than paper. Works great for me. I think you may be better off buying a used unit, Bill, rather than trying to get one fixed. I got the last one for $175 from eBay. I have never had a MPP failure, and they get rough treatment.

The iPad works great if you don't need to read the actual dots and only need lyrics and chord symbols. I tried to use an iPad and it was too small for me to see the dots . . .