It appears that the TCD24004A I've had for 9 years is toast - I now have the eternal gray "Welcome, Powering up..." screen after I unplugged and plugged it back in. I've tried rebooting, unplugging, disconnect network adapters, etc. The problem is my TCD24004A has lifetime service on it that I want to keep. So I got my hands on TCD649080 and a TCD540040 from people that were no longer using them. Is there a way for me to take advantage of these other working Tivos so I can keep my lifetime service intact? I've tried swapping the hard drives with no success. I am computer literate, but haven't been able to wade through the other threads to know if they apply to me or not. Any help?