I have an Indigo 1 that's been running just fine for many years. The only weird thing about it is that no matter what I set in the PROM, it won't auto boot. This isn't really a problem, I just hook up a serial cable when starting up the machine, type "boot" at the prompt, and we're off on our merry way. Now, however, all of a sudden the machine is stuck at an orange LED (and doesn't chime, or make noise of any sort) if I have a serial cable connected to port 1 in any way - connected on the other end, not connected on the other end, doesn't matter. If I unplug the serial cable it chimes, starts right up, no problem. Unfortunately that isn't going to work for me as even though I have a keyboard and monitor connected, it never gets far enough to initialize them. Any suggestions on what to look for? There's nothing obviously wrong with the port and both of my 8 pin serial cables seem fine. I haven't yet pulled the CPU board but I suppose that's the next logical step.