carl5056's profile

Frequent Visitor

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22 Messages

Sun, Nov 22, 2020 7:00 PM

Can't see 2.4 WiFi Network

I have a couple of old devices that WILL NOT do 5 Ghz Wifi. So, I have my 2.4 and 5 Ghz Wifi as different names. I can see the 5 Ghz on my phone, but cannot see the 2.4 . Even if I type in the name and password manually, it says the network isn't there. According to the Xfinity settings, it is being broadcast. I have tried turning pff the broadcast and turning back on. No change. I restarted the modem. No change.

 

Only strange thing is, when I go into the Wifi settings, the 2.4 has the Wifi signal icon showing, but the 5 does not. Does that mean there is a problem with the 2.4 network? It says everything is fine. I want to get rid of my old Wifi router, but I can't if the Xfinity modem won't so 2.4 Ghz.

Responses

jav6joev

Bronze Problem Solver

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2.1K Messages

7 m ago


@carl5056 wrote:

I have a couple of old devices that WILL NOT do 5 Ghz Wifi. So, I have my 2.4 and 5 Ghz Wifi as different names. I can see the 5 Ghz on my phone, but cannot see the 2.4 . Even if I type in the name and password manually, it says the network isn't there. According to the Xfinity settings, it is being broadcast. I have tried turning pff the broadcast and turning back on. No change. I restarted the modem. No change.

 

Only strange thing is, when I go into the Wifi settings, the 2.4 has the Wifi signal icon showing, but the 5 does not. Does that mean there is a problem with the 2.4 network? It says everything is fine. I want to get rid of my old Wifi router, but I can't if the Xfinity modem won't so 2.4 Ghz.


Which model modem/gateway do you have?

EG

Expert

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87.1K Messages

7 m ago

Try hard resetting the device to factory defaults by pressing and holding in the recessed reset button on the rear for 30 seconds. This can sometimes clear up some weird behavior issues. You will lose any customized settings, and they will need to be re-configured from scratch.

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carl5056

Frequent Visitor

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22 Messages

7 m ago

I have the XB6-T modem. According to my Account Details it should do 2.4 .
EG

Expert

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87.1K Messages

7 m ago

Did you reset it ?

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carl5056

Frequent Visitor

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22 Messages

7 m ago

Yes. No difference.

carl5056

Frequent Visitor

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22 Messages

7 m ago

Also, by doing this, I lost my "bridge mode" so my Wifi router is now useless, since I can't use it's DHCP. Which was the router with 2.4Mhz Wifi I was connecting to, so my cameras are useless now. Gee, thanks.

EG

Expert

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87.1K Messages

7 m ago

Sorry that happened to you..... 😞

 

I did write this disclaimer in my earlier post: "You will lose any customized settings, and they will need to be re-configured from scratch."

 

You should be able to re-configure things. If not, I had no way of knowing.... It's always worked before. I don't write their buggy firmware coding......

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New Poster

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1 Message

7 m ago

This seems very similar to an issue I had that took me a few months, a Comcast technician, multiple chats & phone calls and several gateway replacements before i finally figured it out, only in my case it was the 5 GHz band that refused to show up.


It turned out to be interference from an LED lighting fixture with built in motion detector in my garage - unplugged it and all my WiFi issues vanished! Once I started to suspect interference, I turned off ALL power at my house's breaker panel except to the XB7 gateway (5 GHz reappeared and speed tests went from 60 Mbps at best to 500+ throughout the house). Then by turning circuits back on one at a time, I quickly found the LED light issue. 

The light (4' Costco shop light) had been in use for years before it started being a problem, and it did not need to be on to cause 5 GHz to disappear, only plugged in. 

In short - light gone, problem solved. Hope you figure out your problem. 

Visitor

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1 Message

Unbelievable! I have been trying everything for almost three weeks to get my 2.4 "back".. three modem swaps, hours on phone with the provider, multiple technician visits and countless resets. I saw this post and unplugged a lamp with smart bulbs in my living room. Immediately the 2.4 GHz showed up and reconnected with all of my household WiFi enabled devices! Crazy thing is that lamp has worked for years and actually was connected to the very same 2.4 GHz.

Thank you very much for the post, would have never thought to try and search for interference from household items.

carl5056

Frequent Visitor

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22 Messages

7 m ago

It wasn't special settings in the modem. I couldn't even see the routers Wifi after that. That's what was so strange. If I couldn't access it due to a different DHCP, so be it. But it wasn't even there.

 

Any idea why I have the symbol usually used for Wifi strength next to the 2.4 Wifi name? Honestly, I'm just going to go to Comcast and replace it. See what happens.

EG

Expert

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87.1K Messages

2 m ago

5-month-old dead thread now being closed.

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