One CableCard on my TiVoHD seemed to lose the ability to tune some channels (Cablevision system) yesterday. Initially it was just channel 37 (TNT) but later that channel returned but I lost 38 (USA) & above with the exception of 702, 705, 707 (essentially the HD versions of the local channels). The other card was fine. While checking which channels I could tune or not tune I noticed that Channel 40 (FX) showed a íno signalí warning screen. On the TiVoHDís diagnostic screen, the modulation is switching back and forth between QAM 64 & QAM 256 with a frequency of 519000 KHz. It canít achieve a signal lock.
The CableCards (NDS cards) were replaced recently after the same thing happened late last month. The new cards worked OK for about two weeks. When the guy replaced the cards he also replaced a nasty three way splitter outside the house.
Could this possibly be a signal strength issue?