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A/V Dropouts & pixelation with certain channels

Discussion in 'TiVo Help Center' started by JZ1276, Jul 10, 2017.

  1. JZ1276

    JZ1276 Member

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    Aug 20, 2008
    Cable provider is Fios & I am using a Roamio. On certain (but not all) channels, I am receiving audio/video drop outs & pixelation. The signal strength for these channels is in the high 80's (last time I checked 87) so I don't know what the issue can be. Anyone have any ideas? Thanks.
     
  2. krkaufman

    krkaufman TDL shepherd

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  3. JZ1276

    JZ1276 Member

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    Aug 20, 2008
    It is acting as though the signal strength is poor. not just audio dropouts but very bad pixelatian also. Also like I said, is it not all channels (AMC is worst).
     
  4. Buster

    Buster Member

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    I'm having the same problem. I have a couple of channels that are basically unwatchable because of the extreme pixelation and accompanying audio dropouts. Signal strength is ok. I'm on Charter and they've said they have no idea what it is, because the signal strength is fine. They are pointing the finger at the TiVo as being the source of the problem.
     
  5. timstack8969

    timstack8969 Member

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    Also been seeing this problem with extreme pixilation and accompanying audio dropouts using Tivo Bolt+ with Comcast of Garden State, NJ. Signals are good. Noticed it happens when going to/from a MPEG4 channel like TCM (Ch 890) when pressing number keys on Tivo remote.
     
  6. Buster

    Buster Member

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    Jul 17, 2002
    I should add that I have 2 TiVos - one series 3 TiVo HD and one Bolt, and this is happening on both of them.
     
  7. Nickipedia

    Nickipedia Nick of Time TCF Club

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    This has been a problem on Charter here for quite a while, and it comes and goes in severity. My hypothesis is it lies somewhere in a feed from an upstream super headend/satellite. It only seems to be non local channels. Many times when the signal breaks down i can browse the other channels and they're just as bad. Once I tune to a local station the problems resolve. They return once I go back to a cable channel. Since it doesn't happen in any specific pattern here, it's hard to get Charter to chase it down. FWIW :D
     
  8. Sparky1234

    Sparky1234 Totally

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    Same here with a new Bolt+.
     
  9. JZ1276

    JZ1276 Member

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    Aug 20, 2008
    I connected a 6db attenuator & so far it seems to be fixed. I guess signal strength of high 80's is 'too hot'.
     
  10. homersby

    homersby Member

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    Dec 10, 2015
    Yep. I get that too with Fios in the Baltimore area on my Bolt. Annoying but tolerable and it seems to come and go. Sometimes I think it is fixed for good and then it comes back again. Haven't checked my signal but it has been this way for a long time.
     
  11. JZ1276

    JZ1276 Member

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    Aug 20, 2008
    Spoke to soon,was even worse than before. Revoved the attentuator,.
     
  12. LPplayer

    LPplayer New Member

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    Aug 11, 2017
    I commented about dropouts on another thread a few minutes ago. For my poor audio situation with a Premiere and a 4 year old Yamaha receiver I ditched the the HDMI between the two and went to RCA for the composite and audio connections. Voila!
     
  13. JZ1276

    JZ1276 Member

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    Aug 20, 2008
    I don't see what that has to do with some channels acting as if there is poor signal strength when there supposedly isn't. Besides, using composite & RCA's for audio means you no longer have Dolby Digital & HD video. That is unacceptable.

    AMC is probably the worst. I get pixelation to the point where it isn't even watchable sometimes. However, the signal strength is at 90.
    I replaced the coax cable going to the Tivo & that seemed to clear it up for a couple of days but the problem is back.
    There seems to be only a handful of things I can try next. I have the signal split 3 ways. I will try bypassing the splitter & if that works it means either the splitter is no good or the signal was too weak. I have a bunch of attenuators I can try that weaken the signal from 6db to 20db. If one of those work then the signal was is too hot (even though it says it's at 90). Other than that I don't really know what else I can do.
     
  14. JoeKustra

    JoeKustra in the other Alabama TCF Club

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    You can rent your cable company's box for a month to test the channel. They may have a DTA that will get the channel in HD. If the channel is good with their h/w, I guess you can continue to work on the TiVo. But with a signal of 90% (and probably a SNR of 36dB), my money is on your feed.
     
  15. JZ1276

    JZ1276 Member

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    Aug 20, 2008
    That's a good idea. I actually have a box in a room I never really use so I will temporarily do it with that one. What is a 'DTA'?
     
  16. JoeKustra

    JoeKustra in the other Alabama TCF Club

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    Ashland, PA...
    A DTA (What is a DTA? What channels can I get with a DTA? What about those new HD-DTA? Comcast Cable TV FAQ | DSLReports, ISP Information) (see my signature) is a usually what you get when your cable company goes digital/encrypted and you don't already have their STB. It comes in various forms, capabilities and manufacturers but bottom line is it was made to let you still receive digital/encrypted cable after a change done by your feed. I have one in a box that my Mini sits on. If I want more that two, my feed charges $1.95 each. They don't always receive all channels your normal STB receives and some don't work with HD.
     
  17. Chuck_IV

    Chuck_IV Active Member

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    Connecticut
    I posted about something similar the other day, although I am on Charter. I have been fighting an issue with pixilation on a handful of channels(A&E, AMC and Hallmark channels) that occur after several days of being fine. I can go a few days and things are fine, then out of the blue, pixilation on those specific channels that get 10 times WORSE if I upload something(ie. doing a speed test, on the upload test, the channel become unwatchable).

    What fixes it for me is disconnecting the main cable into the main splitter for a minute or two and the reconnecting and I'll be fine for a couple days. That's all it takes.

    Things I have done/tried...

    Checked ground, it is fine.
    Split cable internet line off before and after Tivo lines.
    Tried different powered/unpowered splitters.
    Ran Tivos through two or three splitters
    Ran an attenuator with splitters on the Tivo lines

    All cables are new RG6 cables too. I have a high pass filter ready and waiting for the next time but believe it or not, it has been fine since the weekend, so that is 4 days now(I probably just jinxed it though).

    My SNR is 35-36 and signals have been 90's to 80's during various tests but nothing has fixed it yet.
     
    Last edited: Sep 7, 2017
  18. JZ1276

    JZ1276 Member

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    Aug 20, 2008
    Out of curiosity. What if I swap the Tivo with a Fios box like mentioned above & the problem goes away? Obviously Tivo is at fault but what then would the steps be to fix that??
     
  19. JZ1276

    JZ1276 Member

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    Aug 20, 2008
    Just checked the diagnostics on the channel and the SNR is 36 db which according to Troubleshooting Digital TV Signals on Tivo's website is 1db high. There are also RS Uncorrected errors which was at 1536 & increased to 1572 within a minute or so.
     
  20. JoeKustra

    JoeKustra in the other Alabama TCF Club

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    Ashland, PA...
    A SNR of 36dB is fine. You wouldn't go to the ER if you has a fever of 98.7, right?

    You have some bad noise. Start checking connections and/or call your provider. A basic 4 tuner Roamio does not display RS Corrected errors, so they may be high also.
     

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