Random channels go black on TIVO HD

Discussion in 'TiVo Series3 HDTV DVRs' started by DrDatabase, Oct 26, 2007.

  1. Jan 6, 2008 #61 of 140
    dwiller

    dwiller New Member

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    Sep 28, 2001
    Boston, MA, USA

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    Today I seem to have some basic cable channels, and I have channels in the 200s (including Encore) up through 224. What is interesting is that 224 is the channel that was just added (THEN) - I think it's called. After that, nothing, and nothing in the 800s where my HD channels are. I also noticed that one of my CableCards (#2) has nothing all zeros for the CableCard #, Host # and Data #.. Obviously that is not good. I tried unplugging the cable for a while and am rebooting now.

    Ok, I'm still getting no data for Cable Card #2, but looked back at my records (I copied ALL of the numbers (serial #, host #, data #, unit address #) down when I had these installed in Sept of '06....I used to have version 4.05 on my cable card #2, and 4.21 on cable card #1. Now they are both 4.21...I wonder if that is part of the problem or why things have stopped working.

    Comcast is coming Wednesday.
     
  2. Jan 6, 2008 #62 of 140
    yroca

    yroca New Member

    48
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    Dec 6, 2004
    sk1069 - glad to hear that was your issue as well. I am hoping it helps many others who had the same issue. Unfortunately, we have wait until February to see what happens. The tech seemed to indicate that sometime before then, the TiVo and Cox will communicate and get another date in the future.
     
  3. Jan 6, 2008 #63 of 140
    Highlander67

    Highlander67 New Member

    35
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    Mar 29, 2004
    Arizona
    Well it's a major issue. I ended up returning my M-Card yesterday to Cox (im In Arizona) because of the constant channels going black, or in my case going grey. After resetting my TivoHD 3 times within a week, I took the cards back until this issue can get fixed.
     
  4. Jan 6, 2008 #64 of 140
    YazooWho

    YazooWho New Member

    323
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    Sep 30, 2004
    Gilbert, AZ
    I checked my m-card as described above and it shows a date of January 28th, 2008. Thats about a month from when the card was installed. I'm still having the same issues with blank channels and reboots work.

    For the record:

    THD
    Mcard
    Cox/Phx (Scheduled to come out today with a new card)

    So I'm guessing it still a issue even if the date is in the future sorry to report.
     
  5. Jan 6, 2008 #65 of 140
    YazooWho

    YazooWho New Member

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    Sep 30, 2004
    Gilbert, AZ

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    I had Cox come out with a new MCard today and so far today no issues. Like before, it would come randomly so I will wait a few days before passing judgement.
     
  6. Jan 7, 2008 #66 of 140
    YazooWho

    YazooWho New Member

    323
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    Sep 30, 2004
    Gilbert, AZ
    I didn't have to wait days before it happened again. Here is excactly what happened this morning when I went to go check to my Tivo. The reason I'm posting this is because I really think its a tuner issue or something with the TIVo. This is my 3rd Mcard and they all behave the same way.

    Turned on my system and it was on Live TV (705 HD CBS). Good, like it should be.
    Changed the channel to Noggin (106) for my kid...nothing. Got the usual blank screen.
    Looked at the progress bar and it wasn't moving. No response to pause, play, FF, 30 sec, nothing. Pressing Live TV button just toggled me between the the Channel (705) that was showing and a blank station (106).
    However when I press the channel up from 106, it went to the next channel and showed that. Went back down one to the original channel and nothing.
    So I did it again and went up one channel and press record so it would lock that tuner to record that station. Pressed Live TV and went back to 705. I then changed the channel to 106 and NOW it showed.
    I went back to the show that was recording and stopped it, and then changed the channel to 106 and everyother channel, switching between tuners and they seem to all work fine.

    Something happened in the Tivo to stop showing the channel and after playing around with the tuners, it released it and started to show it again. If I remember right, the channel that was blank (106) was one of the last channels we watched last night but I will have to make sure tonight.
     
  7. Jan 7, 2008 #67 of 140
    yroca

    yroca New Member

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    Dec 6, 2004
    YazooWho - I will have to repeat your steps when I get home. I noticed that 106 (NOGGIN) was not tuning on my end either - but I think it is the only channel. I will see if playing around with the tuners resolves it like it did with yours.
     
  8. Jan 7, 2008 #68 of 140
    YazooWho

    YazooWho New Member

    323
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    Sep 30, 2004
    Gilbert, AZ
    One other thing I'm going to test tonight is to write down what channels were the last channels that were tuned the night before and see if those are the only channels affected. One of mine is usually 106 because of my kid and that seems to be one thats always blank the next morning.

    Let me know what happens with yours.

    Thanks.
     
  9. Jan 7, 2008 #69 of 140
    yroca

    yroca New Member

    48
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    Dec 6, 2004
    By the time I went to repeat your procedure, I had lost almost all channels - reboot fixed it. I did try your procedure before the reboot just to see, but it didn't change anything. I will watch for 106 to drop out again and try what you said. Getting tired of the reboots though - but just glad the channels come back.
     
  10. Jan 7, 2008 #70 of 140
    m_jonis

    m_jonis Member

    677
    7
    Jan 3, 2002
    Albany, NY
    Happened again to me tonight. Except this time, it was even the basic cable stations. I tuned into one and got a little round twirly "ZEN" icon that said, Please wait negotiating tuner or something like that. After about 10 seconds it tuned that channel and then all the others came back.

    I've got an SA M-card
     
  11. Jan 8, 2008 #71 of 140
    yroca

    yroca New Member

    48
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    Dec 6, 2004
    OK - 106 (NOGGIN) was missing this morning, but nothing else that I noticed. 107 was fine, so I switched to it and manually started a recording on it, and then did channel down to 106 and it tuned it no problem. That looks like a workaround in certain instances.
     
  12. Jan 8, 2008 #72 of 140
    YazooWho

    YazooWho New Member

    323
    0
    Sep 30, 2004
    Gilbert, AZ
    All,

    *UPDATE*
    I called Tivo support again last night and it was the first time that a tech admitted that there was an "Known Issue" and their engineers are working on it.

    I described the problem and we tried to look at the "Diag" screen in the CableCard Menu and I got an error. I have seen this error before and a reboot clears it. We restarted the box to get some info from the card.

    I gave him my HardWare number and a few other Version numbers he requested. He also asked for my daytime phone number so an engineer can get a hold of me if needed. He told me that the problem isn't the box, isn't really the card, the connection or with the cable company. He told me that there is an issue with the card communicating with the cable companies server and when it can't communicate anymore, you will see those errors in the CableCard menu and start losing channels.

    The only official fix (according to Tivo) right now is to restart the box until their engineers find a fix.
     
  13. Jan 9, 2008 #73 of 140
    yroca

    yroca New Member

    48
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    Dec 6, 2004
    Thanks for the update - keep us posted. Lost channel 106 (NOGGIN) again tonight. Went to 107 and pressed record and went to 106, but it didn't work, so I went to 105 and recorded (so both tuners were locked on), and then change channel back to 106, which prompted me to cancel the recording on 105, and then it tuned fine - so it seems specific to one of the tuners or streams. Just though I would add that piece of info.
     
  14. Jan 9, 2008 #74 of 140
    YazooWho

    YazooWho New Member

    323
    0
    Sep 30, 2004
    Gilbert, AZ
    Funny you mention that because I tried the same tests again and got the same results.

    On another note, when I got a blank channel and when trying to "trick" the tuner didn't work, I went into the CableCard menu to look at the CC screens and got the errors I had reported to Tivo. Something like "error xxx//diag.html" on every screen I tried for the card. A reboot worked and I was able to get the info.

    When the trick works, you are able to retrieve the info from the CC menu.

    This confirms that when the CC loses connection or wheatever it does to the server, that's when channels start disappearing and we get blank channels.
     
  15. Jan 9, 2008 #75 of 140
    yroca

    yroca New Member

    48
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    Dec 6, 2004
    Correct - and I also have seen those errors in the CableCard diagnostics referencing various HTML files. Again - reboot fixes that. At least TiVo is aware and hopefully working on the fix.
     
  16. Jan 12, 2008 #76 of 140
    MarkinAZ

    MarkinAZ New Member

    9
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    Dec 17, 2007
    Chandler, AZ
    Hi,

    I've had my two HD Tivos for about 3 weeks now. I've had Tivo with DirecTV for years with maybe a half dozen restarts. My initial install resulted in audio sync problems and slow motion reported in another thread. That was fixed when I had the SA s-cards replaced with a single m-card per box. But that is when the other problems started like the occasional frozen channel but more frequently, channels going gray.

    My two boxes seem to do this in sync. I can receive all channels up to 22 and my local HD channels over cable and antenna. The problem appears to be with the simulcast or mapped channels.

    I'm really convinced this has to do with the cablecard but I'm looking for a consistent factor. Is it all cablecards, m-cards, s-cards, SA or Motorola. With the number of posts and concerned that Tivo hasn't addressed this yet. I really want to keep my Tivos but this type of instability is not something I can live with.

    I'm hoping all of you that have posted would reply and post your setup. I'm posting mine below. I would like to see if we can find something that is the same from a hardware standpoint for all of us.

    My setup
    Cox Cable
    1 SA m-card per Tivo
    OTA antenna connected and configured
    Tivo USB wireless network connection
    Software version 9.2a

    Thanks to all and lets hope Tivo is listening.

    Mark
     
  17. Jan 13, 2008 #77 of 140
    MarkinAZ

    MarkinAZ New Member

    9
    0
    Dec 17, 2007
    Chandler, AZ
    I'm replying to myself because I think I have another piece of the puzzle. I spoke with Tivo support and they pointed me to CC screens to look for EMM or Entitlement Management Messages. This is what tells your CC what channels you get.

    My expire date and CP Auth are fine but my EMMs processed show 0. After some research I've found this is a very necessary part of ongoing viewing. I found the EMM field in the CC configuration screen under CA Info, the top menu option under CC configuration. So at this point I'm pointing the finger at Cox until I see some other reason not to.

    If anyone else has a chance to take a look post what you see for your EMMs Processed.
     
  18. Jan 13, 2008 #78 of 140
    ChadS

    ChadS New Member

    6
    0
    Nov 2, 2007
    I have the same exact issue occuring with my Tivo HD here in Phoenix. It has been forcing me to do a reboot every few days. I am also seeing the error message in the CableCard diagnostic screens when the channels go black. I'm not so sure that it is a Cox issue though as I had a CableCard installed in my TV for about a year and never had this problem (although that was a S-Card).

    My setup
    Cox Cable
    1 SA m-card
    Tivo USB wireless network connection
    Software version 9.2a
     
  19. Jan 13, 2008 #79 of 140
    MarkinAZ

    MarkinAZ New Member

    9
    0
    Dec 17, 2007
    Chandler, AZ
    I think the switch to the M-card and proper configuration is the issue. M-cards are new to Cox in Phoenix and I wonder if they know how to properly configure them.

    The information on the screens in the CC configuration is different than the S-cards. I'd bet if you go back into your CC configuration while everything is running fine you'll see the EMMs Processed showing 0 or 1. I could be wrong but I know another Tivo user here in Phoenix that is showing more than 12 for the EMM count and their card was re-paired yesterday.
     
  20. Jan 13, 2008 #80 of 140
    ChadS

    ChadS New Member

    6
    0
    Nov 2, 2007
    Just checked the "SA CableCard CA Screen" menu and "EMMs Processed" is showing 0. Right now all channels are working and tuning with no problem. I will monitoring that over the next couple days.
     

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