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Can couplers or grounding blocks cause pixelation on HD Channels?

Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by nth78, Dec 4, 2007.

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  1. Dec 4, 2007 #1 of 11
    nth78

    nth78 Legend

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    MPEG2 channels specifically. I'm just trying to find out why this is happening on my MPEG2 channels. There is one coupler in my cable run as well as a grounding block on the outside of the house. I've ordered replacement BBCs to see if that is causing it. I only use one Sat tuner and signal strength is very good.
     
  2. Dec 4, 2007 #2 of 11
    houskamp

    houskamp Active Member

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    For the mpeg2 channels you could remove the bbc to test as they are not needed for them..
     
  3. Dec 4, 2007 #3 of 11
    K4SMX

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    Try tuning to a regular SD channel and then back to an mpeg2 to see if that clears it.
     
  4. Dec 4, 2007 #4 of 11
    P Smith

    P Smith Mr. FixAnything

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    Then no.

    Check other reasons; overheating, HDD bad sectors, etc.
     
  5. Dec 4, 2007 #5 of 11
    nth78

    nth78 Legend

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    Why would me only using one Sat input disqualify couplers or grounding blocks causing pixelation. Also, how do i check for bad HDD sectors?

    Thanks
     
  6. Dec 4, 2007 #6 of 11
    lwilli201

    lwilli201 Hall Of Fame

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    The best thing to do is eliminate the splice and ground block as a problem. Pick up a good pair of connectors and replace the one in the spice and bypass the ground block and see if that helps. Also check the connectors for possible loose connections. If the ground block is outside, check for corrosion and moisture. There should be a little Resistance when putting the center conductor of the coax into the splicer and ground block. If it feels loose, replace. Good luck.
     
  7. Dec 4, 2007 #7 of 11
    Redlinetire

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    Double that suggestion. I had weird reception problems a couple of years ago. I hand checked all connections, including ground block, it all still looked new and I couldn't find anything.

    After several confusing attempts trying to determine the problem, it turned out to be the ground block. It still looked shiney and new but when I took a wrench and unscrewed the cable, the whole thing was corroded inside! Needless to say, I replaced the cable and ground block and all was fine...
     
  8. Dec 4, 2007 #8 of 11
    P Smith

    P Smith Mr. FixAnything

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    You wrote
    "Originally Posted by nth78
    <...> I only use one Sat tuner and signal strength is very good."
    That's why.
     
  9. Dec 5, 2007 #9 of 11
    litzdog911

    litzdog911 Well-Known Member

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    Most of the MPEG2 HD Channels are beamed from 110-deg and 119-deg satellites. Check your signal readings on those satellite transponders and post back your results here.
     
  10. bt-rtp

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    Some pepole have discovered that grounding the multiswitch causes pixelation. This grounding of the multiswitch is not required or recommended.

    The only places for grounding a satellite system are outside at the coax ground block and the antenna mount.
     
  11. K4SMX

    K4SMX Hall Of Fame

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    Was there anyone who reported problems with that besides the guy who re-posted in numerous threads about his noise caused by "grounding" his WB68 to his outdoor A/C compressor?
     
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