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HR21/SWM channel jump, 771, then reboot

Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by trekologer, Apr 13, 2013.

  1. trekologer

    trekologer Legend

    127
    1
    Jun 30, 2007
    For the last couple days I've been having this odd problem with one of my receivers which has gotten progressively worse. I'll have it tuned to a channel and it will seem to be fine and then it will pop up a 771/searching for signal message then often the audio or video feed will change to that of a different channel for a moment or two, then back to the correct one again. After this happens a couple of times, the box reboots itself. This will happen with both tuners.

    It is an HR21-700.

    My other receivers (same SWM via same splitter) are not experiencing this. However, I haven't yet had the chance to go outside and check the cable connections.

    Any ideas of what this could be and what I should start looking at first?
     
    1 person likes this.
  2. gov

    gov Legend

    1,101
    50
    Jan 11, 2013
    Seems like I encountered a receiver a few years ago that no matter what channel you wanted, it would show another. Maybe you are in the early stage of 'that problem'?

    If I recall correctly they sent a new box and that fixed it.

    The 21s are getting old, and the rumor mill has it by the end of the year they will be joining the 20s on the don't recover list.


    LOL, do you have enough LNB capacity for a HR44 ?

    This might be an opportunity!!!
     
  3. trekologer

    trekologer Legend

    127
    1
    Jun 30, 2007
    I swapped the "bad" receiver out for another one and the believed good receiver (an H21) was doing the same thing. I unplugged the SWM power injector and so far the problem seems to have gone away.

    I'll swap the "bad" received back and see what happens later today.
     
  4. gov

    gov Legend

    1,101
    50
    Jan 11, 2013
    Good troubleshooting!!
     
  5. teebeebee1

    teebeebee1 Godfather

    415
    4
    Dec 11, 2006
     
  6. Rich

    Rich DBSTalk Club DBSTalk Club

    25,663
    436
    Feb 22, 2007
    Piscataway, NJ
    I've had the same problem with a 21-700. It got stuck in a "771" loop and I had to replace it.

    Rich
     
  7. trekologer

    trekologer Legend

    127
    1
    Jun 30, 2007
    Ok, here's a little update. I swapped the "bad" receiver back and all was good for a couple days and then my troubles came back again. I finally went to check out the coax wiring. The copper on the end that was screwed into the splitter was a bit corroded so I chopped the end off and put a new F-connector. However, it seems that I had either run out of coax or didn't measure correctly when I installed it 5 years ago and there was a coupler between the two segments which was pretty much rusted/corroded through. I replaced the F-connectors and put on a new coupler and covered it with tape to try to keep moisture out but eventually should replace the run entirely with a continuous one.

    Not exactly sure why resetting the SWM temporarily make the symptoms go away though. Perhaps it adjusts the signal level at power-on?
     
  8. May 6, 2013 #8 of 10
    Chargerdan

    Chargerdan New Member

    9
    0
    Jun 15, 2007
    I've had this same problem since I switched over to the SWM and Genie. I'm starting to suspect that the DECA device may be the problem. I've removed it from the device and running whole home with just the CAT6 cable. I hope this takes care of the problem.
     
  9. May 6, 2013 #9 of 10
    inkahauts

    inkahauts DIRECTV A-Team

    21,529
    957
    Nov 13, 2006
    One simple thing to try... Shut down all your receivers (menu restart, pull the plug when they go off and start to reboot). Unplug your swim. wait 10 minutes, plug in the swim, wait 10 mins, plug in the rest of the receivers again. Could just need to reboot the swim.
     
  10. Chargerdan

    Chargerdan New Member

    9
    0
    Jun 15, 2007
    Thanks for the info. I'll give it a try.
     

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