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Tivo is blaming V53 error on SNR ratio?

Discussion in 'TiVo Roamio DVRs' started by barrett14, Oct 21, 2013.

  1. Oct 21, 2013 #1 of 112
    barrett14

    barrett14 New Member

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    Aug 20, 2013
    I have been reading that there isn't such a thing as too high a SNR...

    I am getting V53 errors on random channels at random times. My signal strength is in the low 90's and my SNR is between 37-40. Tivo is telling me that the SNR is too high, and that I need to have Charter come out and fix it.

    They have come out several times because of intermittent internet (I think caused by the same problem) and they never fix it.

    I am not sure what to do here if Charter won't/can't fix it. Tivo will not accept my Roamio as a return since its been more than 30 days.

    Also - I have tried using various attenuators and they will not bring the SNR down.

    Please help!
     
  2. Oct 21, 2013 #2 of 112
    CrispyCritter

    CrispyCritter Purple Ribbon Wearer

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    Feb 28, 2001
    North...
    A couple of thoughts:

    1. SNR numbers aren't standard; they mean different things to different companies and nobody is sure exactly what the TiVo numbers mean.

    2. If your attenuators haven't brought the SNR down, and you still have reasonable signals, then you haven't tried powerful enough attenuators.

    3. I suspect the problem is not the attenuators, but some other problem with the signal, given you internet problems. Have you noticed more problems after rainy weather, for instance? (A bad outside coaxial cable could cause your issues.) It all comes down to Charter having to fix your signal.
     
  3. Oct 21, 2013 #3 of 112
    barrett14

    barrett14 New Member

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    Aug 20, 2013
    The charter tech that came out last week said there was a signal problem that was affecting the entire building! He said that he would have to get a line tech to fix it but nothing has been done and the most frustrating part is, there is NO RECORD of what this guy told me last week. He told me that he would make notes on my account and escalate the issue but I guess he didn't do either.

    I am really worried that whoever comes out tomorrow is going to tell me that nothing is wrong since its difficult for me to "prove" that there is a problem.

    The reason that it is difficult to prove there is a problem is because the problems are all intermittent. It may be that when he comes out tomorrow, everything is working fine at that moment.
     
  4. Oct 22, 2013 #4 of 112
    hornmustang

    hornmustang New Member

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    Sep 12, 2013
    I have similar issues from time to time. Every now and then I get a Channel Not Available error. Flipping channels or changing tuners usually gets this message to go away. Although sometimes it takes a few minutes for it to clear. I have Comcast with 98-100% signal and 39-41 db SNR. Using multiple splitters I was able to get my signal down to 90-94% and SNR of 35-37 dB, and I still had the problem. So I went back to my original configuration. I think there must be a software issue or issue with TIVO's tuner design.
     
  5. Oct 22, 2013 #5 of 112
    barrett14

    barrett14 New Member

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    Aug 20, 2013
    My SNR is 37 and they say that is too high and is causing the problem... They're saying its a cable company issue. Sometimes resetting the Tivo box will fix it, and other times it won't.
     
  6. Oct 22, 2013 #6 of 112
    kbmb

    kbmb Active Member

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    I have Comcast and my signals are all 100 and the SNR is 41-43dB....I have not yet had any of these Channel Not Available errors or V53 errors.

    -Kevin
     
  7. Oct 22, 2013 #7 of 112
    barrett14

    barrett14 New Member

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    Aug 20, 2013
    I have had signal issues with Charter that has been affecting my internet. I wonder if these same issues are causing the Tivo problems... and Tivo is mis diagnosing the problem with the SNR level...
     
  8. Oct 22, 2013 #8 of 112
    kbmb

    kbmb Active Member

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    My (un)professional opinion.....yeah, it's probably whatever issue you are having with your connection in general. Tivo I think tends to blame that SNR first (like they are reading from a troubleshooting script).

    I don't think you'll have a chance to solve anything until you fix the underlying issue with your connection.

    -Kevin
     
  9. Oct 22, 2013 #9 of 112
    barrett14

    barrett14 New Member

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    Aug 20, 2013
    I would like to say that my series 3 tivo was working fine through all of this. I told the Tivo tech that yesterday and he dismissed it saying that the Roamio has a different processor in it.... Apparently a processor that isn't working.
     
  10. Oct 22, 2013 #10 of 112
    kbmb

    kbmb Active Member

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    Jun 22, 2004
    NH
    Same here....TivoHD for 8 years with signals pegged at 100 and never had any issues. Yes, the Roamio is all new inside, but still.....something seems off.

    I also have a Comcast DVR, and I took and plugged it into the same outlet as the Roamio. Where the Roamio reported 41-43dB for SNR, the Comcast box reported 37.5dB. Now I understand different boxes report things differently, but from that standpoint it's hard to tell the cable company that anything is wrong with the line when their box works fine.

    Is Charter working to fix what issues you DO know you have on the line?

    -Kevin
     
  11. Oct 22, 2013 #11 of 112
    barrett14

    barrett14 New Member

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    Aug 20, 2013
    Complicated answer:

    They shoed up last Thursday and he said there was a line issue affecting the whole building (I live in a residential tower). He said that he would escalate the issue and a line tech would be out 24-48 hours to fix it. I continued to have problems so I called Charter back and they looked up the notes from my service call.... Surprise! No notes indicating the problem and nothing was escalated. Another Charter tech is supposed to be here in 20 minutes to go through all of this again...

    My worst nightmare is if this particular tech determines that there isn't anything wrong..
     
  12. Oct 22, 2013 #12 of 112
    kbmb

    kbmb Active Member

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    Good luck.....fingers crossed here!

    -Kevin
     
  13. Oct 22, 2013 #13 of 112
    barrett14

    barrett14 New Member

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    Aug 20, 2013
    Thanks! I'll let you know what he says.
     
  14. Oct 22, 2013 #14 of 112
    barrett14

    barrett14 New Member

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    Aug 20, 2013
    He just left.

    Like the previous tech, he said that he can see there is a problem based on my modem history. He said he isn't sure what is causing the V53 error with the Tivo, but said that Tivo is flat out wrong by saying that 37-40 SNR is too high... he said that the higher it is, the better. He said 35 would be on the low end, as Tivo suggests that its optimal.

    He said he's going to have a line tech come out within 48 hours and check the line... A line tech has been out before but nothing improved. I really hope they fix this.
     
  15. Oct 22, 2013 #15 of 112
    lessd

    lessd Active Member

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    With digital one can't see if the cable signal has any AC component on it, I had this problem once in old days and it showed up as a line going through my TV picture, the cable people installed a ground isolator at my home cable input and that fixed the problem.
     
  16. Oct 22, 2013 #16 of 112
    kbmb

    kbmb Active Member

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    Well hopefully that's some progress in that at least he saw something.

    I think Tivo uses the SNR value in relation to overall signal level since they don't give users the ability to see the actual level.

    -Kevin
     
  17. Oct 22, 2013 #17 of 112
    MrPlastic

    MrPlastic Member

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    Apr 27, 2008
    Austin, Tx
    I have a HD XL, a Premiere XL and a Roamio Pro. I have noticed V53 errors on the Roamio when I reboot or get an update and all tuners are on the same channel. It is easily remedied by changing the channel(s).
    The Premiere is nearest the drop and gets Mid 70s channel strength with about 33 SNR, the HD XL is next closest and gets high eighties with 34 SNR. The Roamio is at the end of a 25 foot cable and get 95 signal strength and 36-40 SNR.
    My provider is a smaller firm Grande in Texas.
    I have some times gotten the V53 error on the other units but it has never been a major problem.
    I used to have Time Warner and a tuning adapter. I went through 4-5 technicians telling me I had a strong signal which I did. But I had channel unavailable messages all the time. I was lucky Grande was available and they use Tivos as their DVR. They also don't use tuning adapters.
    I would suspect your Provider rather than the Tivo. I agree with the Tech saying that 37 SNR is not too high.
     
  18. Oct 22, 2013 #18 of 112
    barrett14

    barrett14 New Member

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    Aug 20, 2013
    MrPlastic - What do I do when Tivo is telling me anything over 35 is too high and the culprit, and then I have Charter saying that 37+ is great?
     
  19. Oct 22, 2013 #19 of 112
    CrispyCritter

    CrispyCritter Purple Ribbon Wearer

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    You ignore the disagreement until you have evidence. The Charter tech has no idea what 37 means for TiVo - it does not mean the same thing as it does on Charter equipment (this has been mentioned to you before).

    Until you show that attenuation works, the Charter tech will be unconvinced by the TiVo tech. So far, you haven't experimented enough to say anything about attenuation.

    As I've said, I suspect your problem is unrelated to attenuation and is related to your internet problems. Just have your Charter techs concentrate on that. But it wouldn't hurt for you to pursue attenuation tests on the side.
     
  20. Oct 22, 2013 #20 of 112
    danthefan

    danthefan New Member

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    Nov 1, 2001
    Raleigh, NC...
    I'm having similar issues with TWC in Raleigh. Some channels periodically won't tune including ABC, NBC, HGTV, etc. If I change the channel and change it back it will usually tune the channel in.

    TWC asked me to plug the cable directly into the TiVo and bypass the tuning adapter to see if the channel worked, but it didn't. The channel wouldn't come in until I changed the channel away and back. Of course the channel tunes in just fine on my TWC cable box.

    TiVo also told me my signal strength was too high and that it would damage my TiVo. TWC is saying my signal strength is too low based on the numbers on the tuning adapter diagnostics. I'm not sure TiVo knows what they are talking about here.

    I have a service call scheduled for this Saturday for TWC, not sure what they will do. Of course my TiVo Premiere XL worked just fine with the same tuning adapter, cable card and signal strength.

    Daniel
     

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