I have an SC-545 that went down during a T-storm about 10 days ago. Thanks to Kev41, I found that one of the three fuses on the head board is blown. I was able to get some of these sent in. Roland has a great Service Bulletin on Roland Passport that deals with Drop Out Troubleshooting Document for SP, VP, PRO2, XC, SJ and XJ. It references another service bulletin called "Head Driver Protection" that is located on the RNet that has instructions for changing the fuse. Does anyone have this file that they could send me? Send me a PM