I have a SX-3800 on the bench with no flouroscan display other than the L and R lighting up. Also, it has no sound and the selector lamps do not light. I checked the voltages at the power supply board and I am not getting 5.5v at pin 17 or 12.8v at pin 15. I believe these supply the digital devices and the flouroscan display. What components should I check, and is there any chance that the digital devices are beyond repair if the 5.5v rail blew?