Forum Discussion

boryssts's avatar
boryssts
Dialled in
2 months ago

Hub 3.0 overheating llight (RED) go red after few seconds after rebooting

Hi, 

We started to have few issues with our network and I am coming to conclusion its the HUB 3.0 overheating as the LED reports RED all the time and when rebooted it goes purple for few seconds and then red again , while the speed stay constant for over 300Megabits, we get quiet ofted what appers to be dropout in network where everything feezes and then comes back again this is happening both via wifi and wired network, sometimes even I get notification on my work laptop that status of my network has changed. 

I've tried to run diagnostics on the HUB 3 but with the FW changes now you can't monitor temperature on it, the the diagnostics recomends checking temperature it dosn't report it anymore. The casing of the hub is warm to touch but that dosn't directly indicate its overheating 

The setup is HUB3.0 in modem mod only

netgear passive switch 1gbps for ethernet plugs around home and mess network with Archer C80 and RE605X hotspots 

I just started network mnonitor 

<a title="Broadband Ping" href="https://www.thinkbroadband.com/broadband/monitoring/quality/share/b26ce463c31e865108bfc94f3e5ed84b1757f49f">My Broadband Ping</a>

hub3.0
Hub3.0 red light
overheating

7 Replies

  • boryssts's avatar
    boryssts
    Dialled in
    2 months ago

    There is quiet few spikes going above chart for latency and few poacket loss drops. 

    • John_GS's avatar
      John_GS
      Icon for Forum Team rankForum Team
      2 months ago

      Hi boryssts 

      Thanks for posting and welcome to the community. Sorry for any broadband issues.

      The Hub being in Modem Mode will explain the lighting. Can you pop it into Router Mode for us, see if the light changes and also so we can run further tests?

      Best wishes.

  • boryssts's avatar
    boryssts
    Dialled in
    2 months ago

    Hi John, sorry for late replay, the router is in normal mode for the last 5 days, it continues to flacuate with large pings and experaince two very large delay on teams call were internet froze for good 40-45 seconds. 

    Generally the brodband in my area is quiet good, since engineers replaced the amplifier board in my local on street box from coaxial to fiber about 4 years ago. As last one was intermitted from the area of NTL and had frequent and produced over 1M pre RS and post RS errors and experianced  SYNC Timing Synchronization failure, thios dose not feel as the same issue. 

    24/10/2025

    https://www.thinkbroadband.com/broadband/monitoring/quality/share/62e316b7686415ee9dd33321d2b7b47948b54f8a-24-10-2025

    [url=https://www.thinkbroadband.com/broadband/monitoring/quality/share/62e316b7686415ee9dd33321d2b7b47948b54f8a-24-10-2025]My Broadband Ping[/url]

    <a title="Broadband Ping" href="https://www.thinkbroadband.com/broadband/monitoring/quality/share/62e316b7686415ee9dd33321d2b7b47948b54f8a-24-10-2025"><img alt="My Broadband Ping - HUB3" src="https://www.thinkbroadband.com/broadband/monitoring/quality/share/62e316b7686415ee9dd33321d2b7b47948b54f8a-24-10-2025.png" /></a>

     

    • Sabrina_B's avatar
      Sabrina_B
      Icon for Forum Team rankForum Team
      2 months ago

      Hi boryssts 👋.

      Thanks for reaching out to us, sorry to hear of the issues that you are facing with your Hub overheating. So that we can assist you we would need to bring you in for a private message, please look out for the envelope on the top right of your web browser or if you are using a mobile device, it will be located under your profile icon.

       

      Thanks.

       

      Sabrina

    • cje85's avatar
      cje85
      Wise owl
      2 months ago

      The downstream power levels are much too high. They should be under 10dBm but you're getting over 15dBm on some channels. 

      A red light is normal in modem mode, the LED fades over time and becomes more red than purple. 

  • Client62's avatar
    Client62
    Alessandro Volta
    2 months ago

    The signal levels could be like this if a 10dB wide band attenuator had been removed from the COAX to the VM Hub.