The ol' SV1 has some miles on her, but is playing very well after her most recent tune-up from Protech. This is my main ax. Currently, I have the joy of working with the Gospel Choir at the U.S.N.A. Needless to say, my gear has to work. Everything has to be excellent 100% of the time - that's the vibe there. So, when my keys needed repair, it had to get done quickly & correctly. Only the piano sound was working, and if you know anything about the SV1, you know you get it for the Rhodes and Wurli patches (which simply weren't working). Protech was the only licensed Korg repair shop in the area, so it was an easy choice regarding where to take the instrument. They charge a reasonable $75 diagnosis fee upfront, and then inform you as to the problem and a quote to perform the repairs. I'm always leery of timeframes with shops, but these gents were timely. It was about two week, and an additional $144 ($219 total), which is very reasonable. It's worth noting that their work does come with a 30 day guarantee. I did have to utilize this fact, as the SV1 needed a second round of love to get her back to new. They honored the agreement, and did the work at no additional charge. Protech is good enough for me and the US Navy - you can feel confident in taking your gear to them. read more