I have a Toshiba SD-H400 Series 2 TiVo with an integrated DVD player. The TiVo has basic service. I have two other TiVos with lifetime TiVo Plus service so I am fairly familiar with how the TiVo should work. Over the last month when I turn on the tv the TiVo is attached to, all I see is a black screen. I can reboot the machine and it will work fine for 30 to 60 minutes and then the screen will go black (one time the screen froze and did not go black). I have to reboot it again to resume watching tv. It will play shows though to the finish that have previously been recorded. I noticed that it was not connecting to the TiVo service at night. It will connect if I do it manually using the menu path. Does this sound like a hard drive issue? If so, I have a hard drive that I took out of a series 2 TiVo brand TiVo a few years ago. Could I transplant it to the Toshiba TiVo that is giving me problems? Is so, would it need to be reformatted in any way prior to the transplant? I only have a handful of recorded shows on the Now Playing list and I am not worried about losing them. Thanks to anyone that can advise.