On Tuesday, September 30, 2003, at 05:41 pm, b wrote: > External devices 'power-up' on the FireWire bus, but aren't detected, > so, who knows? Thanks for your input. Yes I believe these are the same symptoms. I have seen 3 other Ti's fail in the same way, all 400/500 models. There is nothing at fault with your power supply, I think has to do with some kind of "arcing" phenomenon within the IEEE 1394 implementation Apple used back then...but that's my hazard at a guess. -- Tarik