Random channels go black on TIVO HD

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

  1. sagamore

    sagamore New Member

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    Dec 26, 2005

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    Same problem here, intermittently. Tivo HD with an M Card on RCN. Sometimes the picture goes black. Some of those times it does seem to coincide with some other network activity on the Tivo. But yesterday we started getting picture/audio breakup (like digital static/pixelation) on and off until the picture finally went black. Restarting provides temporary relief.
     
  2. saibari

    saibari Member

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    Jan 11, 2008
    Ahwatukee...
    Do NOT go to 2 single stream cards! I just switched from two S-cards to one M-card because I was having maddening audio/video synch problems that rendered programs virtually unwatchable! While this problem is frustrating, it's not as bad as that! ... Though, I don't know cuz this dropped channel business has happened to me 3 times now (in 10 days) and it's quickly getting old--especially if I end up missing a show I wanted to record ... or if rebooting no longer works. This is crazy! We pay way too much for cable and TiVo service to be going through this!
     
  3. saibari

    saibari Member

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    Jan 11, 2008
    Ahwatukee...
    Hi all. I have this problem too...only my screens go gray. But the channels I loose vary and a re-boot brings them back. It happened just now and I rebooted and all is well again. Then I saw this post and I tried the above. The SubExpireTime listed is Feb 13, 2008. So does this mean this is not the source of my problem? Since this has happened 3 times in 10 days, I doubt I'll make it to Feb 13 without it happening again. HELP! :(
     
  4. saibari

    saibari Member

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    Jan 11, 2008
    Ahwatukee...
    So, if you're not using the cards, what are you using?
     
  5. bizzy

    bizzy New Member

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    Jan 20, 2004
    San...

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  6. saibari

    saibari Member

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    Jan 11, 2008
    Ahwatukee...
    So, I've finished reading the posts in this thread--sorry if my earlier posts reflected that I hadn't finished reading, but this problem is so aggravating that I was anxious to provide feedback and get help! Anyway, I checked and my EMM is 0 also. However, you've posted since you made the above fix and it appears you're still experiencing the problem--is that correct? If so, then does this mean the EMM reading isn't an issue?

    And while I agree that this is the lesser of 2 evils (with regard to the a/v synch issue) this dropped channel business is still a major problem in my opinion!
     
  7. saibari

    saibari Member

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    Jan 11, 2008
    Ahwatukee...
    ...neither seemed to have any knowledge of this being a common problem! :mad: The TiVo tech said it was confusing because the fact that a re-boot solves the problem seems to indicate the issue lies with the TiVo hardware, but the EMM count being 0 points to a cablecard problem. She then did a 3-way call with Cox and the cox tech sent a signal to the card and said if I continue to have problems they'll send out a tech. <sigh> The TiVo tech further said that the firmware, which reads 1.0 should be at 6.13. So the card is either not receiving or not processing the signal properly.

    If whatever the Cox tech did solved the problem, I'll report back. But that's highly unlikely. I imagine I'll have a Cox tech out here some time next week! :(
     
  8. aztivo

    aztivo Member

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    Feb 23, 2005
    AZ
    This is very strange as my cbale cards SA Single stream also say firmware 1.0 samy with my m card
     
  9. FarscapeOnTivo

    FarscapeOnTivo New Member

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    Jan 6, 2005
    We have had this problem for some time now. It only affects non-local channels. The channels will suddenly be lost at what seems like random times. I am fairly certain that this problem didn't present itself until I requested and received software version 9.2a, as we went for a couple of months with the HDTivo on the original version of software without this problem. The day after the download of 9.2a we got blank channels, but I am not for guessing on root causes.

    It would always fix itself on reboot. This made us assume it was an bug with the Tivo software and not the cable. We did this as a fix quite often after reading this forum expecting Tivo to eventually update to a newer version and fixing itself.

    Yesterday morning however, we experienced the blank channels again, but this time the reboot is not working. We have rebooted and unplugged many times and the problem is still there.

    I have been on the phone with Cox Cable and Tivo. Niether seemed to be aware of the problem. I find this strange, as I work in technologies for my company, and we work closely with telephone services. In my experience a problem of this magnatude would not go uncommunicated to the representatives on the phone. As a matter of fact something like this would have clear documentation scripted for the representative to be trained in a flash. Anyway the Tivo rep. eventually recommended that we trade cable cards and then if this did work that they would replace my HDTivo free of charge.

    I have a question for those who say that this is a "known issue" that is being worked on by Tivo. Where have you gotten this information? Was it from someone over the telephone at the 800 number?

    Has anyone tried writing letters to the CEO? Or even through the BBB.
     
  10. cmonroe

    cmonroe Member

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    Sep 1, 2007
    I've got the exact same problem and a reboot almost always fixes it for me. The symptoms are the same; locals still work and it started occurring right after the 9.2a update. I left my TiVo for 10 days while on vacation and when I returned a reboot did not solve the problem. I checked the CableCard stats and noticed that I had 0 EMMs processed. I called Cox and the rep had me back up within 30 seconds, he claimed that he had to re-register my CableCard in their system for some reason. It was cool that Cox fixed my issue so fast, but annoying that I have to be around to reboot my TiVo every couple of days.
     
  11. hddude55

    hddude55 New Member

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    Jan 4, 2007
    Phoenix
    I live in Gilbert and was have tiling issues on my S3 so bad many channels would freeze for up to 5 seconds repeatedly, making shows on many channels almost unwatchable -- this on a new box that replaced my 10- month old unit a couple months ago. Cox made several visits and tried all sorts of things to clean up the signal before finally replacing cards. But the tech didn't have two single stream cards. After much fiddling with cards, as of a week ago I now have either have one multi-stream + one single stream, or two multi-stream cards. The freezing/tiling seems to have disappeared -- hooray! -- but in the past four days I've had channels disappear twice. Reboot "cures" the problem, temporarily. I am thinking about calling Cox and requesting they install two single stream cards and see if that cures this latest problem. The only reason I hesitate is that I can bear the current, lost channels problem, but I fear if I have Cox mess around with cards again the tiling/freezing could recur, and that problem is not bearable.
     
  12. BrianAZ

    BrianAZ Back on the wagon

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    Aug 13, 2007
    Chandler, Az


    I wouldn't do this. I had dual S cards in my THD and had the tiling/audio sync issue. It was WAY worse for me. I have only had to reboot my Tivo 2-3 times in the past 10 days or so. More than I would like, but better than the other option. If you go back to the two S cards, you will likely have the tiling/sync issue again.
     
  13. budf15

    budf15 New Member

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    Jul 27, 2005
    I'm using Charter in Suffolk, VA with a Motorola M-card and I've been dealing with this problem for a few weeks now myself. Called Charter tech support who had me restart the TiVo and then they did their remote thing to talk to the M-card. That didn't work. Next called TiVo again. They immediately transferred me to the TiVo HD tech support who again had me try unplugging and restarting the TiVo, this time waiting about 5 minutes. Again no worky. Diagnostics screens all looked good. Of concern here was the fact that the TiVO HD tech said this problem was very VERY unusual, and was not a problem they were aware of. Huh? We then brought Charter tech support on the line again who this time decided it was a fault on their end not mine. Unfortuntately, that doesn't help solve this issue and I'm not convince that's all that's going on since the problem seems to roll through many channels at random times. So we'll see what happens.
     
  14. hddude55

    hddude55 New Member

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    Jan 4, 2007
    Phoenix
    OK, I'll leave well enough alone for now. If only the Cox techs were more familiar with our boxes I would think some of these widely reported problems would be solved. But as a percentage of their total customer base, we are probably a small fraction of one percent so every time we deal with techs, it's like starting from scratch, including the need to educate them on the basics of our machines. The last three techs have insisted my first generation Series3 only needs one multi-stream card, so it's not shocking they have no clue how to troubleshoot anything. This forum is about the only chance we have to get solutions for the far too many issues surrounding this "new" technology.
     
  15. DaddyBC

    DaddyBC New Member

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    Aug 21, 2005
    I live in Gilbert also. Have tiliing on both S cards. Running SNR of 35 on both cards and most channels. An OOB SNR of about 26-27 on both. (Whatever OOB SNR is)

    Also getting the intermitent black channels. Have had Cox out 10 times, new cards, new cable runs, increase decrease feed, no changes whatsoever. :mad:
     
  16. saibari

    saibari Member

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    Jan 11, 2008
    Ahwatukee...
    I would have them switch you to 1 M-card. However, be advised that you will then almost certainly have the dropped channels issue. :(
     
  17. saibari

    saibari Member

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    Jan 11, 2008
    Ahwatukee...
    Actually, not so "cool"! If you're still having to reboot every couple of days then they did NOT fix the issue!

    UPDATE: As I expected, I experienced the dropped channels problem again last night. :mad: This time it was affecting channels in the 20's through 400's. I didn't try beyond that so I don't really know how far it went. However, the 700's were working. So since the HD channels I was watching and recording weren't affected, I thought I'd leave the situation alone and see what happens. I called Cox last night and they "hit" my card and scheduled a tech to come over tomorrow afternoon. Well, the channels are still out. So "hitting" the card didn't help. However, I've restarted and all is well again. ... for now!

    I'll let you know what the Cox tech says tomorrow... As others have mentioned, apparently we cablecard users are a tiny fraction of Cox's customers so I'm afraid we're getting short-shrift. So if neither Cox nor TiVo solve this issue soon, I will be filing a complaint with the BBB and any other pertinent organization because this is UNACCEPTABLE! :mad::mad:
     
  18. aztivo

    aztivo Member

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    Feb 23, 2005
    AZ
    oaky so a quick recap I have a S3 and a THD both with the freezing pictures. last sunday I had the cox contractor come out he knew nothing about tivos (shocking I know) I told the to bring a few Mcards and some Scards. He shows up with 4 cards one M card that I put in my THD and it gives us the numbers and as he is calling it in it goes into update mode (date on card is 12/7/2007) it updates in about 15 min. everything has woked fine from that point on on my THD All the cards he brings out that are Scards are from 2004 so I tell him I need newer ones he comes back 2 days later and has 3 cards from 04/25/2007 so we get them in and long story short (too late) I am having very little freezing on my S3 maybe only once an hour and only for about 2 seconds.
     
  19. hddude55

    hddude55 New Member

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    Jan 4, 2007
    Phoenix
    I suppose any effort is better than none, but BBB is funded by member businesses, so if you really think they are in the consumer's corner, follow the money and guess again.
     
  20. mwenn1

    mwenn1 New Member

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    Aug 15, 2007
    Phoenix, AZ
    Yeah I am having the audio/video syncing problem with COX in Phoenix as well. It is very frustrating to have to hit pause 3/4 times during a show just to keep things synced up. I hope they find a fix soon.
     

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