Technically you do not need to swap boxes although you may wish to do so. Everything that worked before still will. You only need the new cable box if you're going to pay for the Comcast's HD upgrade to get HD premium channels. However, since your TV is Cablecard ready and has ATSC/QAM/NTSC tuners you have lots of options other than a new box. The cablecard is a direct substitute with advanatages and disadvantages--other threads have discussed it here and Comcast should have info on their web site.rgr said:I'm planning on buying a widescreen tv (Samsung HLR5678W it looks like) that will allow HD. I have a TiVo S2 standalone. Comcast San Francisco tells me that I'll need a new cable box and that I can choose between a 2000, a 5100, and a 6412 by going down to the cable store and swapping out my existing motorola digital box.
Because the TV has all the needed tuners you can split the cable and hook up the TV directly. Let it scan the cable for stations and see what it finds. It should come up with all the analog stations (typically 2-99) plus some/many over-the-air digital broadcast stations in your area (see www.dtv.gov for more info on what's in your area). If the digital stations are broadcasting in HD then you'll get it -- with no cable box at all. However, you won't get any premium channels this way or any cable-only digital channels (HD or SD) without a cable box of some kind.
Third option is true over-the-air for HD via an antenna. If you already have one then I'd hook it up to the TV and see what it finds.
In short, there are several options for programming including HD that don't involve a new box but ultimately that may be your best option.
Should be possible but the hookup is going to get complicated if you want TiVo to be able to record anything except the basic analog channels. With only one cable box (DVR or not) you're only going to have one source for the digital channels and any premium channels you get.[/quote]rgr said:I think the 6412 is a DVR as well - any problems using that for recording HD and using my TiVo for regular non-HD recording?
TiVo and standard def TV aren't going to look as good. The TV is going to show every flaw better and bigger than ever. I find it acceptable but others might not.rgr said:Thoughts on what I should expect for picture quality from the TiVo on the big tv?