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MINI CAN"T FIND MAIN ROAMIO

Discussion in 'TiVo Help Center' started by nkaz13, May 19, 2017.

  1. nkaz13

    nkaz13 New Member

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    May 19, 2017
    I have a Roamio and 2 minis that are on a MOCA network. 1 random day 1 of the minis could not find the main roamio. I called Customer Service and they had me go through multiple connection tests. The mini could connect to the internet. That technician told me there is a known issue and the mini might have to be replaced. She told me to call back and reference a case number.

    After that event, the second mini also lost connection to the Roamio. I called back, referenced the case number, and the technician told me that I needed to purchase a new splitter, with a higher MHz rating, and a POE filter. I got those 2 items, installed them, and the second mini regained connection to the main Roamio, but the original mini still could not connect to the Roamio.

    I called back to Customer Service and that technician had me swap the 2 minis. The original mini worked and the working mini did not work. Clearly there is some problem with the MOCA connection at that original mini. I swapped out all of the cables and the was still no connection.

    I received email instructions to remove the power from modem, router, MOCA network router, Roamio, and mini. I followed those instructions and now the Roamio cannot connect to TiVo network.
     
  2. krkaufman

    krkaufman TiVo shepherd

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    Nov 25, 2003
    Ugh, sounds nigh on nightmarish.

    Can you provide any model numbers for your modem, router and "MoCA network router" (especially this one), and Roamio model, and a description or diagram of how they interconnect? (see attached for example diagram)
     

    Attached Files:

  3. nkaz13

    nkaz13 New Member

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    May 19, 2017
    Thank you so much for looking at this!! I set it up like this 3 years ago and it's been working great.
    IMG_1265.jpg
     
  4. fcfc2

    fcfc2 Well-Known Member

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    Feb 19, 2015
    Not sure how this ever worked. The MoCA POE filter needs to be on the input of the first splitter to enter your home, likely in a small box on the side of your home. The way it is now you are blocking the MoCA signals from connecting to the Roamio and mini 2 from getting to the internet. The actual filter belongs over in the area where you have "Coax in Comcast". It will probably start working if you just temporarily remove the MoCA filter, if not I would suspect your "5-2500 MHz" splitter. Consider replacing it with a true MoCA 2.0 rated splitter from either Holland or Verizon. Here is a reasonable source, Cable and Satellite Tools - Distributor of Tools for CATV, Satellite, Home Theater, Security, Telecom
     
  5. krkaufman

    krkaufman TiVo shepherd

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    Nov 25, 2003
    Thanks for the diagram; they're almost always helpful and definitely so in this case.

    At least as diagrammed, the "PoE" MoCA filter is installed in the wrong location. It needs to be moved to the input of the 3-way(?) splitter that isn't explicitly indicated in the diagram, the splitter first encountered by your incoming Comcast signal. See here for add'l info.

    Do you have physical access to the initial splitter? If yes, get the "PoE" MoCA filter moved ASAP and give it all another try; if not, you could try just removing the filter, temporarily, and then getting Comcast to get a MoCA filter properly installed at your point-of-entry ("PoE"), assuming they're the only ones with access.

    edit: p.s. For example, see attached...

    nkas13 MoCA alt.png
     
    Last edited: May 20, 2017
  6. krkaufman

    krkaufman TiVo shepherd

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    Nov 25, 2003
    The key thing to understand is that a MoCA filter BLOCKS MoCA signals (actually, anything above 1002 MHz, typically, per the rejection specs cited in your diagram), while allowing frequencies within its passband (signals beneath 1002 MHz; i.e. cable TV/Internet or OTA antenna) to pass with minimal loss.

    This is why a MoCA filter is placed at the cable provider point-of-entry to the home, to block neighbors' MoCA signals from interfering with your MoCA setup, and to keep your own MoCA signals secured within your own coax plant.
     
    Mikeguy likes this.
  7. krkaufman

    krkaufman TiVo shepherd

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    Nov 25, 2003
    This paragraph seems to indicate that the "PoE" MoCA filter was a recent acquisition and install. The "PoE" MoCA filter in the original diagram definitely needs to be moved, as indicated; however, it's possible that there may be some other issue at the root of your original MoCA problems.

    The good news is that your original issue might possibly have been remedied by properly installing a "PoE" MoCA filter, if you didn't have a MoCA filter on your PoE before the problems first started. Get the "PoE" MoCA filter properly installed, and see where you're at.
     
    Last edited: May 20, 2017
  8. krkaufman

    krkaufman TiVo shepherd

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    Nov 25, 2003
    Lastly, ideally the splitter components would be explicitly MoCA-compatible, but that can be addressed if you still have issues after moving the "PoE" MoCA filter. (The model numbers of the splitter components would be good to know, at that point.)
     
  9. krkaufman

    krkaufman TiVo shepherd

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    Nov 25, 2003
    Ok, one last item for consideration AFTER you have your Roamio Plus again properly networking as a MoCA client. See here.
     
  10. nkaz13

    nkaz13 New Member

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    May 19, 2017
    Oh, haha. I should've known where the POE was supposed to go. Duh. So, I just put it in the correct place and everything is working. There was probably some cross-signal that the POE is now filtering out. There used to be a delay on this mini. Now it is going as fast as the Roamio. Thank you so much for the help.
     
    krkaufman likes this.
  11. krkaufman

    krkaufman TiVo shepherd

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    Nov 25, 2003
    Aside from securing your MoCA network, the "PoE" MoCA filter also provides a slight boost to MoCA performance, by more efficiently reflecting MoCA signals back onto your own coax lines. There have been several posts to the forums, recently, relating situations where working MoCA setups have gone south after a period of time, likely owing to slightly degrading hardware -- and where getting a MoCA filter installed restored connectivity.
     

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