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  1. TiVo Series3 HDTV DVRs
    I'm using an HD TiVo with the factory HD, lifetime service, and a Cablecard provided by Optimum. Recently, the device has started behaving somewhat unreliably. The most common indicator of a problem is that I'll receive some channels, but I won't receive other channels (they'll appear black...
  2. TiVo Help Center
    I have TiVo HD, in Tucson. Lost a bunch of channels in mid-Jan, which I believe was when local Comcast began the MPEG-4 switch. My machine had trouble downloading the software upgrade, but TiVo finally helped install it for me, and everything worked. Now, on those same channels sometimes the...
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