I have a couple of friends who dumped three completely fine Dreamcasts on me... for repair. The same thing is definately wrong with all three of them. One of my friends had a controller (he doesn't know which one) which broke port A of three different machines. Two of his own and a third belonging to another friend. Anyway, they all work fine except they both exhibit the same symptoms. Port A doesn't work in any of the three, and they all come up with the 'set date/time' screen when powered on. Is this a common fault with an easy solution, or should I just keep the machines for parts? In short, what broke? Any help would be appreciated.