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Tivo HD Pixelation Troubleshooting

Discussion in 'TiVo Series3 HDTV DVRs' started by Chimpware, Aug 3, 2007.

  1. Aug 6, 2007 #41 of 1597
    lrhorer

    lrhorer Active Member

    6,924
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    Aug 31, 2003
    San...
    OK, I apologize. I thought the code for the UI was available.
     
  2. Aug 6, 2007 #42 of 1597
    Phantom Gremlin

    Phantom Gremlin New Member

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    Jun 20, 2002
    Tualatin,...
    The scenario I'm afraid of is precisely a hardware problem w/o a workaround. For two reasons. First, it would probably be widespread and expensive. So TiVo might be reluctant to "own up" to it. Second, I don't want a refurbished replacement like some of the horror stories I've read. Filthy inside because of smoke or pet hair, etc.

    I'm willing to wait 3 months for a software fix but am very wary of bad hardware.
     
  3. Aug 6, 2007 #43 of 1597
    Phantom Gremlin

    Phantom Gremlin New Member

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    Jun 20, 2002
    Tualatin,...
    Many others have reported problems with menus. I don't even have any cablecards. Using component output.

    I think the main problem you are having with your posts is you are basing your responses on your experiences with an S3. We're talking TiVo HD here, a much different box.
     
  4. Aug 6, 2007 #44 of 1597
    aaronwt

    aaronwt UHD Addict

    19,184
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    Jan 31, 2002
    Northern...
    The only pixelation I see in mine is repeated when you view it again and is also there on my Comcast STB and my Series 3. I did see pixelation once in the menu but it was very fast an located on the bottom 20% of the screen. I haven't seen it again but I'm still looking for it. I'm not using cable cards. The analog picture is fine for me. But I'm also using an HDMI Flea with the TiVoHD output. I did finally get it dialed in to where the picture is close to the Series 3 setting going through the Flea HDMI. I basically had to turn off all noise reduction from the analog recordings on the TiVoHD to get the picture looking the same. It's as if the TiVoHD is doing some kind of noise reduction on it's own. The Series 3 still has more detail, but the pictures are close. I still have the audio problem with the analog though where it is outputting the stereo signal as a mono signal in both channels. So at this point I can only use the TiVoHD for digital recordings since I haven't listened to TV in mono since the 80's.
     
  5. Aug 6, 2007 #45 of 1597
    mike_camden

    mike_camden New Member

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    Dec 11, 2006
    This doesn't explain the pixelation in the menus. First of all, I don't consider the pixelation bad enough in my case to be more than a mnor distraction.

    However, the way it works really makes it sound like it to be something Tivo related. First, as has been reported by several people on this board, pixelation IS occuring in menu areas. Secondly, when pixelation occurs during LiveTV programming, when one (at least in my case and some of the others I have read here) rewinds to where the piexelation occured and plays again, the pixelation is not there.
     
  6. Aug 6, 2007 #46 of 1597
    hank12345

    hank12345 New Member

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    Sep 27, 2005
    My situation-

    Started off with just analogue cable for about a week-- no macro-blocking on analogue channels or QAM, occasional very minor macro-blocking on menus

    Two SA cable cards (s-stream) installed- still no macro-blocking on analogue channels, but now random macro-blocking on hi-def and digital channels, brief, but every 3-10 min, on every hd and digital channel.

    I'm not a expert, but according to my cable tech, I have "excellent" signal strength (he checked it with some kind of meter, both outside, and at the line going into the Tivo box...

    I can also confirm the Tivo shows 100% signal on all channels...

    I don't know if this info will help the experts on the forum narrow down the cause, but I thought it was worth posting my experience--

    I would hope a fix or official announcement from Tivo would happen soon, as everyone seems to be getting different answers from Tivo customer service... I tend to believe Megazone, as he has stated on his blog and in these forums:

    "do note that TiVo is aware of them and is working on additional updates to correct them."

    Hopefully sooner rather than later..... If not, I guess I'll have to return the box, and either live with analogue only, or switch back to D*-- yuck.
     
  7. Aug 6, 2007 #47 of 1597
    Chimpware

    Chimpware New Member

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    Jan 30, 2002
    Again you seem to be missing the point, but in this case you make mine for me. Saying it works on a bench and then if it does not work in the field it is someone elses issue is ridiculous, particularly without any support for this point coming from Tivo. Your suppositions are useless in this area. To take my analogy further, if I bought a Ferrari, it stalled every mile, I contacted Ferrari and they could not tell me why it stalled, but suggested to me (as well as others please read www.tivolovers.com for further info on teh Tivo issue) that they were working on it. I then post on the Ferrari board about the issue and some "know it all" simply claims, with no evidence whatsoever, that it is most likely an issue with the gas I am using and suggests a formulation required for the gas that is not in any documentation for the car, nor provided by the manufacturer. Yeah I can see how that is my problem.

    I also do not want to get into writing letters to the FCC to get my Tivo working. This is not my issue alone others in many areas are having it. It is an issue Tivo needs to address.

    If you feel it is a threat for a consumer to say they will return a product that does not work properly if the manufacturer does not provide adequate support to remery the problem, well I can't affect your view.
     
  8. Aug 6, 2007 #48 of 1597
    Saturn

    Saturn Lord of the Rings

    12,255
    6
    Apr 10, 2001
    This issue is not unlike the "stutter" problem of version 2.0, for those that have been around that long.

    S1's were working great on 1.3, then the new 2.0 software came out and people started coming out of the woodwork claiming how the video and audio were stuttering every so often. TiVo's official word was that it was a sign of a dying hard drive, and the upgrade exposed areas of the disk that were previously unused (despite the TiVo having two separate partitions for the software, one lies dormant when the other activates, but the Videos are stored in a common area.)

    A little while later 2.5 was pushed out and the majority of the stuttering disappeared. Those that still had it could pinpoint it to a dying hard drive.

    If there's problems in the menus and problems that don't reappear with instant replay then it is obviously some sort of decoding bug. Hardware or software, I don't know. But TiVo will probably be able to fix it with a software patch / workaround.
     
  9. Aug 6, 2007 #49 of 1597
    Chimpware

    Chimpware New Member

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    Jan 30, 2002
    No one has mentioned power source as potentially contributing to this issue. Anyone think that is possible and a power conditioner would clear up the pixelation?
     
  10. Aug 6, 2007 #50 of 1597
    gwsat

    gwsat New Member

    455
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    Sep 14, 2006
    Oklahoma City
    I don’t have a suggestion for curing the TiVo S3’s and, apparently, HD’s, distressing tendencies to produce audio dropouts and video pixelizing. I post only to add my vote for the proposition that the problem is TiVo related and, in my case anyway, probably has nothing to do with CableCARDs.

    My biggest problems with dropouts and pixelizing have occurred when I have been watching an OTA channel. At times this glitch has been so frequent and severe that the program was unwatchable. Unfortunately, I have had the problem on cable channels occasionally, too, but it hasn’t happened nearly as frequently as it has on OTA channels.
     
  11. Aug 6, 2007 #51 of 1597
    TokyoShoe

    TokyoShoe Frustrated TiVoHD'er

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    Jul 27, 2007
    Houston, Texas
    I've got TiVoHD , using 2 Motorola CableCards with COMCAST Cable, Houston Texas. I get maybe.. and I stress this a LOT ... maybe 1 or 2 seconds worth of pixelation per 10 to 12 hours of watched TV.

    It's so far only actually happened to me 3 seperate times.. in 3 seperate programs, all recorded on seperate channels across seperate days. In all 3 cases, the pixelation is a small segment of either the lower left or lower right corner.. only covers about 20% of the screen, and lasts a maximum of 1 second before disappearing completely.

    It is SO mild that I basically forget about it, as my Scientific America DVR from TimeWarner had about the same pace of picture quality problems.

    No other performance issues with my TiVoHD , no pixelation during the menus.. only option I wish it had that it doesn't, is TiVoToGo.
     
  12. Aug 6, 2007 #52 of 1597
    gwsat

    gwsat New Member

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    Sep 14, 2006
    Oklahoma City
    One or two such events over such a long period of time strikes me as a nonevent. To me, the problem isn 't really serious unless it is so disruptive that you can't follow the show you are trying to watch.
     
  13. Aug 6, 2007 #53 of 1597
    bkdtv

    bkdtv New Member

    7,902
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    Jan 9, 2003
    DC Metro Area
    I have Verizon FiOS with two Motorola 'S' CableCards in my TivoHD.

    I see random pixelization. Sometimes it effects the full screen, sometimes it only effects one corner of the screen. It occurs anywhere from once to 10 times per hour. It lasts no more than a half-second. If I rewind back to where the pixelization occurred, I do not see it again. So this appears a hardware or software issue unrelated to the recording that causes random pixelization. I have also seen the pixelization occasionally (not frequently) in the menus while the TivoHD, typically when it was doing a lot of background processing.

    The pixelization only lasts fraction of a second...however, I never saw this with the Tivo Series3 (when I had it) or the Verizon FiOS DVR. It is annoying especially if you are accustomed to a relatively pristine picture. I intend to stick with the TivoHD, but will no longer recommend it if Tivo can't resolve this issue in a timely manner.

    I have tried the TivoHD with and without a power conditioner; it makes no difference. I have tried the TivoHD with the stock hard drive and a 750Gb Seagate DB35; it makes no difference. I have tried the TivoHD with the ambient room temperature set to 76 degrees and 68 degrees; it makes no difference. I have tried the TivoHD at native, 720p fixed, and 1080i fixed; it makes no difference. I have tried the TivoHD with and without the OTA feed connected; it makes no difference.
     
  14. Aug 6, 2007 #54 of 1597
    Chimpware

    Chimpware New Member

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    Jan 30, 2002
    Sounds like your issue is slightly different than mine. I have pixelation once every minute or so for about a 1/2 to 1 second. Occurs when I rewind back to spot where it occured. Have never seen pixelation on the menus.

    I am going to try a signal amplifier when I get home later today to see if that affects the issue. I also have a turck rolling from Cablevision on Wednesday to check all the aspects of the signal outlined by lrhorer in a previous post. I will keep everyone updated with results.
     
  15. Aug 6, 2007 #55 of 1597
    AGBulls

    AGBulls New Member

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    Jul 30, 2007
    Chicago, IL
    These pixelation and total picture drop-outs are commonplace with my Comcast Motorola box. In fact, sometimes I miss a good 2-3 seconds of a show because of them. My signal strength is excellent (I've had it checked) and we've kind of just accepted it.

    I'm going to be picking up a Tivo HD later today, and really hadn't given this any thought until this problem thread showed up. I figured with my modem and cable tv coming out of the same line, this was a large part of the problem. I'll let you guys know what I experience once I hook everything up later tonight.
     
  16. Aug 6, 2007 #56 of 1597
    tvofan

    tvofan New Member

    6
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    Jul 27, 2007
    Chimpware, my TiVo HD is connected to an APC UPS and I still see pixelation. So, I don't think power source is the problem.

    I saw pixelation on the channels and behind the menu when connected antenna only (with good signal strength) and with cable & antenna. The TiVo HD is connected to the TV via component cables.

    After I pick up my CableCARDs, I'm going to try recording the same show OTA and via cable to see if I still get pixelation on the channels. (This won't help the pixelation in the menus).

    Do you see pixelation while using the Signal Strength screen? After experiencing pixelation on an HD OTA channel, I went to the Signal Strength screen to see if low signal was the cause. I didn't see any pixelation but maybe I didn't test it for long enough.
     
  17. Aug 6, 2007 #57 of 1597
    Chimpware

    Chimpware New Member

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    Jan 30, 2002
    Thanks for the note on the APC, I have one at home I might try later also if I get ambitious, but I have all my network hardware, a file server and my Vonage equipment plugged into it now so it will be a pain to test. Might pick up a new on at CC, would not be bad to have my AV equipment/Tivo/Mac Mini plugged into one I guess.

    I do see pixelation on the signal strength screen, even in cases where the indicated strength is 100, but less frequent. I am wondering if I have signal fluctuations that are causing the pixelation that are not regestering on the Tivo signal meter as I am not sure what method/sample time is used to produce the signal meter.
     
  18. Aug 6, 2007 #58 of 1597
    TokyoShoe

    TokyoShoe Frustrated TiVoHD'er

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    Jul 27, 2007
    Houston, Texas
    Oh I've never had a total picture OR audio dropout. No, I just maybe get a little chunk of pixelation that affects say.. 20% of the screen for 1 second. It's REAL minor, I mark it up to cable quality issues regarding the actual cable line in my older apartment complex.

    I mostly wanted to share so others have some information regarding what others are experiencing with the TiVoHD's.
     
  19. Aug 6, 2007 #59 of 1597
    jazmaan

    jazmaan New Member

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    Aug 30, 2002
    I was so nervous from reading these threads. But my TWC install went fairly well today after some temporary confusion regarding the 161-4 install "non-error". If you see that 161-4 error during installation of a Motorola card, just ignore it. And if your channel test gets no channels, just WAIT, it can take 5-10 minutes AFTER the home office "activates" before you card actually wakes up. My TWC tech had no clue about these issues, but I was able to research them online right here during the install.

    Now I'm relieved to say that I am getting no pixellation, even though I've got two splitters on the line - one line to my Tivo, one to my DVD-Recorder, one to my TV and one to another TV! I was prepared to sacrifice those splits, but I didn't have to! I'm getting 93 - 100% Tivo signal strength and NO PIXELLATION!
     
  20. Aug 6, 2007 #60 of 1597
    Chimpware

    Chimpware New Member

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    Jan 30, 2002
    For those who did not see the post from TivoPony in the other pixelation thread:

     

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