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H24 Black Screen

Discussion in 'DIRECTV General Discussion' started by satsol67, Feb 9, 2011.

  1. Feb 9, 2011 #1 of 13
    satsol67

    satsol67 Cool Member

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    Mar 8, 2007
    I am in need of some advice.. I have a customer that is having a problem with getting a black screen. she has 2 h24's.. she had dish.. I have been out here 4 times trying to figure this out.. I have replaced the lnb, (swm3), the line going to the dish, the 2 way, the power inserter, the ird.. even swapped ird's.. but for some reason the screen just goes black. sometimes it will go for a few hours and all is fine then black screen (no msg like 771) once it happens you can go to signal screen and its all good but still black screen. what i dont get it is it happens on both boxes not at the sametime and for some reason it more on one box more then the other..

    any suggestions??
     
  2. Feb 9, 2011 #2 of 13
    Davenlr

    Davenlr Geek til I die

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    This is using two different TVs also? They both go black? Or one at a time?
     
  3. Feb 9, 2011 #3 of 13
    satsol67

    satsol67 Cool Member

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    Mar 8, 2007
    yes 2 different tv's and no the one in the bed room does it more often.. she is read to cancel cause of this..
     
  4. Feb 9, 2011 #4 of 13
    Davenlr

    Davenlr Geek til I die

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    OK, get real specific now... Brand LNB, outside temp when this happens, length of cable from LNB to power inserter, length of cable from power inserter to splitter, brand of splitter, length of cables to receivers. Anything else plugged into the receivers like BBCs (shouldnt be on a SWM install), or ethernet to a router? All cables were replaced? System is correctly grounded to power ground?
     
  5. Feb 9, 2011 #5 of 13
    blaqhauq

    blaqhauq Mentor

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    Dec 13, 2010
    If it is grounded, disconnect the ground. 1 time in 11 years I had a problem just like that. As soon as I disconnected the ground all is fine. They had a bad ground and sending voltage into the cable. I worked for comcast but that shouldn't matter how your getting the signal. I am happy I got directv.
     
  6. Feb 9, 2011 #6 of 13
    Tisby

    Tisby AllStar

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    Jun 4, 2010
    Is native is set on and switching the boxes to a resolution that the TVs don't support?
     
  7. Feb 9, 2011 #7 of 13
    satsol67

    satsol67 Cool Member

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    Mar 8, 2007
    Ok, Well I'm in central fl so temp right now is about 63, as for brands.. the 2 way is zinwell like we always use and lnb is directv swm3.. cable length to power inserter i would say is no more the 40 feet.. (the box that doesnt happen as often is hooked to power inserter)..as for ground its hooked with #10 to utility ground and with messenger ground to dish. no bb converters hook to either nor any eithernet connections.
     
  8. Feb 9, 2011 #8 of 13
    satsol67

    satsol67 Cool Member

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    Mar 8, 2007
    its not set for native either... i tried 480-1080..i'm stumped..
     
  9. Feb 9, 2011 #9 of 13
    Mcmiller519

    Mcmiller519 AllStar

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    Oct 15, 2010
    I was going to say check there electric it can cause all kinds of problems if wiring is messed up
     
  10. satsol67

    satsol67 Cool Member

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    Mar 8, 2007
    the one in the living room will last longer before going black.. the one in the bed room seems to go about 30 to 45 minutes then does it but the one in living room will go 2 to 3 hours then do it.
     
  11. Davenlr

    Davenlr Geek til I die

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    I am with Blaqhauq...Sounds like either a bad ground, or a very very small (like one strand of braid) short in a connector. Since its common to both boxes, it would have to be a connector between the LNB and the splitter.

    Disconnect the ground wire, and measure the voltage with a VOM between the ground wire and the ground block with the coax connected to it. Shouldnt read any voltage.
     
  12. satsol67

    satsol67 Cool Member

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    Mar 8, 2007
    good deal.. will check it out.. thank you all..
     
  13. MBME

    MBME New Member

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    Feb 9, 2011
    Where is the P-21 plugged in?
     

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