771 some hd in the evening

Discussion in 'DIRECTV General Discussion' started by sangweb, Nov 18, 2017.

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  1. sangweb

    sangweb AllStar

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    Feb 7, 2007
    Recently I have the problem of 771 on a few hd channels & it only occur at night. It works fine in the morning. 279 OWNHD & 208 espnuhd are a few. The only thing I have installed is an OTA which is about 2 feet to the left of the dish & about 1 foot in front of it. Could this cause interference?
     
  2. KyL416

    KyL416 Hall Of Fame

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    If the antenna is in the path between the dish and the satellites in the sky it can be a problem.

    The two channels you listed are on the 103 slot. (279 OWNHD is on 103cb TPN 3, 208 ESPNUHD is on 103ca TPN 15)


    Can you post your signal levels for 99ca, 99cb, 103ca and 103cb, and if you can post a picture of the dish and antenna?
     
    Last edited: Nov 18, 2017
  3. sangweb

    sangweb AllStar

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    Feb 7, 2007
    Looking at the signal meters, looks like I only get even stransponders. After removing the antenna, channels now remains 771. Others are working as expected. dtvsignal6.JPG dtvsignal5.JPG dtvsignal4.JPG dtvsignal3.JPG dtvsignal2.JPG dtvsignal1.JPG
     
  4. sangweb

    sangweb AllStar

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    Feb 7, 2007
    Also HBOW-HD showing 771 even during the day now. They were working fine yesterday.
    Here is what had happened so far, DTV tech came out yesterday & replace the LNB, it works right away when he swapped it. He tested the signal and everything looks good. When night came, I've lost these channels and now they remain 771. Could it be the switch is bad, not LNB?
     
    Last edited: Nov 19, 2017
  5. jimmie57

    jimmie57 Hall Of Fame

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    Do you have a SWM system ? Press the dash - button on the remote to see if it says SWM Detected.

    This could be a loose connection or corroded one or a bad LNB. Check all connections first.
     
  6. sangweb

    sangweb AllStar

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    Feb 7, 2007
    I have a 16 channel SWM multi-switch which connect to a splitter where my receivers are connected to. Can I bypass the splitter and go directly from my receiver to the SWM switch? I used to have many receivers but now only 2 are left (1 genie 5 channels & 1 HD dvr 2 channels so I only need 7 channels out of the 16 avail from the SWM). Yes my receiver saying SWM connected. I've just swap the LNB yesterday and it only works for about 8 hours and then it shows 771. One of the cable must be bad, let me try to replace the 103 one to see if this helps as it seems to be the only one affected.
     
  7. sangweb

    sangweb AllStar

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    Feb 7, 2007
    there are 4 cables going to the SWM, does it matter which one goes where? I've replaced one and still the same, I'll continue to do the other 3 tomorrow but I think it most likely the SWM. If all failed, I'll ask DTV to come out again to fix it. Tks.
     
  8. jimmie57

    jimmie57 Hall Of Fame

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    You can swap the LNB for a SWM LNB and use just 1 coax to a splitter and stop using the SWM 16 all together. With 7 tuners there are more than 1 type that will support that.
     
  9. sangweb

    sangweb AllStar

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    Feb 7, 2007
    So I just one of the line from the LNB direct to the splitter? I thought I need all four lines to get each of the sat because I see on the SWM switch each line in label the name of the Satelite.
     
  10. jimmie57

    jimmie57 Hall Of Fame

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    Correct, 1 coax to splitter, split to the 2 receivers.
    You have to buy and install a SWM LNB. They only have 1 connection.
     
  11. sangweb

    sangweb AllStar

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    Feb 7, 2007
    I happen to have an swm lnb, hooked it up, use the swm switch power inserter & everything looks good now. I'll wait for a few days before declaring it's fixed because this is what I've thought when dtv tech came out &replaced the non swm lab & it only worked for a day.
     
    Last edited: Nov 21, 2017
    jimmie57 likes this.
  12. sangweb

    sangweb AllStar

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    Feb 7, 2007
    Looks like it is still good. I have a question on running the power inserter. According to solid signal, it should be like this.
    https://manuals.solidsignal.com/SL5-SWM Install LR.pdf

    The inserter goes to the splitter, I have it from the LNB to the inserter and the IRD of the inserter goes to the switch input. Should I follow the solid signal instruction as the LNB goes to the switch, the inserter goes to the splitter? It seems to be working so I wasn't sure if I should follow solid signal or not. Thanks.

    NVM, I think the solid signal is the preferred and correct way.
     
    Last edited: Nov 21, 2017
  13. jimmie57

    jimmie57 Hall Of Fame

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    What you have is fine. Lots of times it is more convenient to do it like Solid Signal shows.
     
  14. TANK

    TANK Icon DBSTalk Club

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    Had the same problem last year. D* sent a tech out to fix it. He replaced the lnb and also put new connectors on most of the cables. He also replaced the ground block.
    He claimed the channel lost problem only happened at night because moisture built up in one of the connections or the lnb after dark.

    During the day the Florida sunshine dried the moisture up and kept it dry during the day.

    No lost channels since then.
     
  15. WestDC

    WestDC Well-Known Member DBSTalk Club

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    A water damage connector can cause the same issue - heat during the day will cause the center lead to expand - lower temps cause it to shrink and lose connectivity
     
  16. satinstallerguy

    satinstallerguy Member

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  17. P Smith

    P Smith Mr. FixAnything

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    why ?
     
  18. slice1900

    slice1900 Well-Known Member

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    The LNB was just replaced, it is highly unlikely to be the problem.

    sangweb, try swapping some of the four cables coming from the dish where they are connected to your SWM16 - swap the two cables connected the ports marked 103/110/119. If after swapping you still see the same issue with the odd transponders on 103ca & 103cb then it is almost certainly a bad SWM16. If the problem moves and now the even transponders on 103ca & 103cb show zeros, then it is a bad connector/cable and you'll know which one.
     
  19. jimmie57

    jimmie57 Hall Of Fame

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    The TS fixed it. See post #11 and 12.
     

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