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Intermittent pixelation on 722

Discussion in 'ViP612/622/722/722K DVR Support Forum' started by dttruax, Mar 9, 2013.

  1. Mar 9, 2013 #1 of 43
    dttruax

    dttruax AllStar

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    Apr 9, 2010
    Been having intermittent pixelation for about a week now, mostly on the HD channels. Sometimes it will happen 2 or 3 times an hour. Sometimes more, sometimes less. Doesn't last too long when it happens, although a couple times I got the "complete signal loss" screen for a split second before channel comes back. Happens in clear weather and there isn't (or shouldn't) be any obstructions, especially this time of year.

    Just wondering what could be causing it. I first noticed it happening after we had some real rainy and windy weather go through the area. So I thought maybe it was the wind moving the dish a bit. Wasn't sure if there was an solar flares or trouble with the sats/uplink lately. Or could it be the receiver itself, or even the LNB and/or wiring from the dish to house (wiring had been buried in my yard for about 10 years)? Any help will be appreciated... although I have a feeling if it gets bad enough I might have to have someone come out and look at it. Right now it's just mildly annoying when it does happen.
     
  2. Mar 9, 2013 #2 of 43
    P Smith

    P Smith Mr. FixAnything

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    W.Mdtrn Sea
    Run diagnostics, check if your LNBF developed a drift [LOF]; try to do cold reboot.
     
  3. dttruax

    dttruax AllStar

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    Apr 9, 2010
    What will the diagnostics say if it did drift?
     
  4. P Smith

    P Smith Mr. FixAnything

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    W.Mdtrn Sea
    Check Details screen
     
  5. Klatu

    Klatu Cool Member

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    Jun 22, 2011
    I think you have to spend at least 10 years here to interpret what the "establishment" is saying. When you get to the details page, look at it, and then you get to ask another question for a cryptic answer. :) You must not give up as this is how you learn.
     
  6. dttruax

    dttruax AllStar

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    Apr 9, 2010
    So I poked around a little bit and still haven't found where to tell if the LNB has drifted. Can someone please give me some more details? Thanks.

    Also, I noticed it hasn't quite been as bad once I turned the laptop cooler fan I have under the receiver. Noticed the high temp was 140 and the low was 120 something. After I turned it on the low temp has been falling and now is at 107. Not sure why it was so hot since it's not really in an enclosed area and it hasn't been that warm in the house.
     
  7. P Smith

    P Smith Mr. FixAnything

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    Yeah, sure ... some helpers would make constructive comments with menu's sequence and screenshots; other would go up to a poster instead ...
     
  8. dttruax

    dttruax AllStar

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    Apr 9, 2010
    Some other interesting tid bits. Was watching BBC America HD this afternoon and it was ok. Just a little pixelation here and there. Then we watched something we recorded earlier in the day on the DVR (there was a little pixelation in the recording). After we were done, I deleted the show and went back to BBC America HD... which was now pixelating real bad, almost unwatchable. Flipped around to a couple other channels and didn't have much trouble there. Even went to TBS HD which is on the same SAT (72) as BBC America and that channel was fine, whereas BBC America was having some problems. So that's odd because I would suspect both channels to be acting up. So, I dunno. This receiver is a little over a year old (had it replaced last February) so I hope that's not what's acting up.
     
  9. otnipj3s

    otnipj3s AllStar

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    Jul 20, 2008
    Had a similar problem last September, when DVR recording caused pixelation. Was told it was a grounding problem, and new box fixed it.
     
  10. dttruax

    dttruax AllStar

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    Apr 9, 2010
    Did menu-6-1-3 and waited for it to get to 100% and status came back as "Good"....and it's currently cloudy and raining outside.... so no LNB drift??? Scrolled through all the info it spat back out and everything was 0 except something came back as 1 and another -2 but I have no idea what info that was.

    Also noticed poking around the diagnostics that the last time my receiver "connected" was 3/3. How often is it supposed to connect and why does it need to connect? It was about that time when I noticed this problem.
     
  11. dttruax

    dttruax AllStar

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    Apr 9, 2010
    If it's a grounding problem, wouldn't that require some re-wiring on the outside of the house and not just a new receiver? And when you say DVR recording caused pixelation, do you mean the recording itself was messed up or that switching from DVR back to real time caused pixelation to the channel you were watching before switching to DVR (or both)?
     
  12. dttruax

    dttruax AllStar

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    Apr 9, 2010
    Flipped back to BBC America HD after a few minutes and it was all good..... weird. Since it does this no matter the weather, I'm thinking maybe a re-point is needed, something is wrong w/wiring, and/or the receiver is going bad due to the high temps I noticed. Or a little of each.
     
  13. otnipj3s

    otnipj3s AllStar

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    Jul 20, 2008
    It was a grounding problem in the box.
     
  14. dttruax

    dttruax AllStar

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    Apr 9, 2010
    Ah, gotcha. Not sure how to check for that.
     
  15. P Smith

    P Smith Mr. FixAnything

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    It would require some specialized equipment and EE lab; it cannot be done at home with a "butter-knife" tools :)
     
  16. dttruax

    dttruax AllStar

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    Apr 9, 2010
    Leaning towards needing a re-point. Not sure how the dish could have gotten out of line except maybe some of the heavy winds we had a week ago skewed it just a little bit. It's cloudy and rainy now, but I checked the signal strengths anyways (MattG wanted me to). 72 was a little low (mid-30's...having some minor pixelation on those channels), 77 was basically ok (high 40's), but 61 was 30, 24, 0, 0... and it just so happens the locals on 61.5 are acting up big time right now with the rain. I could only imagine what they were reading on a clear day, especially since they should be close to 70. And there has been some pixelation on clear days. And I'm almost positive there are no obstructions to the 61.5 sat since it's way up in the sky and there are no leaves yet on any trees that could be close to in the way.
     
  17. P Smith

    P Smith Mr. FixAnything

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    If you'll go up to re-aim the dish, check if LNBF plastic covers is OK and water is not inside the of a block/LNBFs.
     
  18. dttruax

    dttruax AllStar

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    Apr 9, 2010
    Luckily it's on a pole in my yard on not on my roof....
     
  19. dttruax

    dttruax AllStar

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    Apr 9, 2010
    Similar problems today. Crystal clear out w/no clouds. Same signal strength #'s on those transponders. Recorded a show on the local CBS channel this afternoon and it was ok w/just a little pixalation here and there. Now they're real bad. Weird. Hopefully it's just the dish out of line for some reason. Shouldn't be any obstructions, especially with the 61.5 sat.
     
  20. P Smith

    P Smith Mr. FixAnything

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    when seen the issue, press Info twice - you'll get the sat, if you'll go to signal level screen you'll see all info:sat/port/tpn/SS
     

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