Does this apply only to out of the box Tivo Series 3? It has worked flawlessly up until 3 weeks ago. I have made no changes in service. Here is the situation:
Anyone have any ideas? I have had a Series 3 for almost a year hooked up via HDMI to my TV. I have had the same Motorola S cards plugged in for the same amount of time. I still am running software 8.3.1. About 3 weeks ago, I began noticing some "tearing" or massive pixelation/block issues on 2 HD channels. It has now spread to 2 other HD channels. They are not on the same tier of service thru Comcast(not part of a Showtime Block Tier or anything).
This past week I had the Tivo set to record Heroes on NBCHD. All of our local HD comes thru Comcast, not thru OTA antenna. It did not record at all. There were no scheduling conflicts. On Thursday, it recorded 24 minutes of Ugly Betty from ABCHD. I was home both nights. There were no power outtages. It just stopped recording. I was flipping thru channels today and noticed that none of my local channels were getting any signal. I recieved the message that there was no signal on Basic Cable In. I called the ever helpful Comcast(sarcasm implied) who said they could do nothing with cable cards and would have to send a tech out. I know this is false as they have re-hit my cards when I had a similar problem with the local channels before of no signal. I should say that I have no problems on my Comcast cable box in the bedroom with any of these channels, but I do on both cable cards.
I decided to call Tivo just in case. While I was on hold, the tearing stopped and the local signals returned for about 3 minutes. They then went away. While they were clear, the signal strength was 100. My signal strength is now between 75-77 on the tearing channels with alternating no signal. Signal strength is, of course, zero on the local channels.
The Tivo rep goes thru the diagnostics and says the cards are paired correctly. He says that I only need to have the cable company re-hit each of the cable cards. We go 3way, and Comcast supposedly rehits both cards. They told me it might take 20 minutes; however, it was instantaneous before. We got off the phone with Comcast, and I asked the Tivo tech what to do should this not work. He kept telling me all I could do was call Comcast again. I asked him if repeated re-hitting didn't work what to do, and he tells me all I can do is call them back and do a 3 way again for the tech to ask them to re-hit. I have had them re hit 3 x now. I do not see a point in calling Tivo for them only to call and ask Comcast to do it a forth time. Any suggestions you all have would be greatly appreciated.