SB8200

Modem is activated but won’t provide internet to router or PC. 

I bought a new SB8200 upgrading from an SB6183. When I connect to the same location with the same coax cable as the old modem, the receive.led is green steady, but the send led is green flashing. Per the manual, it means the modem is scanning for an upstream (send) channel connection. I have talked to Xfinity and they cannot remote troubleshoot because the modem appears offline. When I put back the SB6183 I get steady green receive and send leds that then turn up Internet in 5-15 seconds. So my problem is the flashing send led for 5-10 minutes without syncing. Has anybody else faced this problem with SB8200. Thanks.  

After recycling powered to my SB8200, the blue receive light is always on. Thankfully my internet works fine and signal is getting from the modem to the router and the speed checks are normal.  Xfinity is my service provider with the 900mbps plan and there are not outages updates or issues for me or my area. I have tried recycling power and have also done a factory reset. Still no change. 

Last September my old modem stopped working so I purchased a Arris SB8200. For the last few months we have experienced numerous dropped connections. It is now being dropped even a few times a day.At first the lower earth symbol would start blinking. Now it stays on like it should but is getting almost to hot to touch. I did a search for cause and this model was the first thing to pop up. Overheating was a large issue.We purchased the modem from Best Buy on 09-22-23. According to this web site there is a two year limited warranty.What can be done to get this modem replaced or fixed?We look forward to hearing back.ThanksRob Garrison 

Recently found out that Arris S34 is getting released and it will be supported for the Next Gen Upload Speeds (100 MBps/ 200 MBps). Source.Arris S34 is now listed on Amazon for pre-order.But, both Arris S34 and Arris SB8200 use the same chipset BCM3390 (source: the listing page on Amazon for each modem). Can anyone explain why one is supported and the other isn't? Technically, the firmware shouldn't be an issue at this pt. I am genuinely curious.

Hello, I recently got an SB8200 and a Flint 2 router to replace my Xfi gateway. The setup went well and I followed the manual and activated the modem with Xfinity. I went to go run a speed test and the download was 700 mbps, but upload was only 5.9 mbps at most (I have a 500/100 plan). It would never exceed 5.9 mbps, besides when I first run the test, it goes to around 7 but then rapidly drops back to 5.9 mbps. I’ve spent the entire day trying to fix this and I’m completely out of ideas. I tried contacting Xfinity support to see if they are limiting it somehow but their support was just trying to sell me their products for 40 minutes straight. I contacted Arris support and they told me to try to reprovision my modem, which I did, but it didn’t make a difference in my upload speeds. I’m completely out of ideas and I would really appreciate any help or any ideas, thanks in advance.

I'm following the instructions to setup an SB8200 modem, but can't connect to the Internet. The Xfinity app has successfully connected to the modem and says it's providing Internet, but when the Internet light on the modem isn't on. When resetting, the lights turn green as they cycle through, but as soon as it finishes the Internet stage, they turn off and only the Receiving light stays on (but turns blue). Why isn't the modem connecting to the Internet?

SB8200 with Xfinity not connecting. Says no IP address

I have errors in my event log on my SB8200 after enabling LAG. I am on firmware AB01.01.009.36.02_022720_183.0A.NSH , I have read that Arris has fixed LAG issues via firmware updates. Spectrum tells me they are not responsible for firmware of non-leased devices, and that I need to update the firmware myself. What can I do? Update: Spectrum says “only firmware I am seeing for that model device is for the Version 6 Docsis 3.0”

I have same thing happening with SB8200, like every week or month it would drop down to 30mbps and power cycling the modem is the only way to fix it, I am in Phoenix.

is the 8200 compatible with router tp link tl-sg108e 

I've been trying to talk to someone on the phone or even live chat but neither one exists you keep sending me in circles this is no way to run a business but a good way to get a bad reputation all I want is to get my refund on a SB8200 that I purchased on 5/08/ 24 my order number is 59472 you tell me I can but just try getting it just give me the info I need to return it and I'll be happy, I already see a lot of unhappy people on your community site.

I just purchased the SB8200. I have activated it with my ISP (Spectrum).  Everything seems to be working on their end. I can’t get it to connect to my gateway eero 6. I have internet when connected directly to the computer from modem, but cannot get the eero to come online

I recently switched service providers but I am still showing my old one on the app. How do I change this and is it affecting my wifi?

I installed a new surfboard SB8200 modem with a EEros wifi mesh system to replace my rented modem from Spectrum.Everything installed smoothly and everything wifi works good except for my Honeywell wifi thermostat. I have a Honeywell T6 wifi pro thermostat. I used to be able to control it from my phone. But ever since I got the new modem it doesn’t seem to work.I called Honeywell support and we figured out the thermostat is not receiving an IP address. So they told me to call my cable (Spectrum) provider who told me everything is working fine. So I called Honeywell support again and someone new told me to contact the modem support. Is there a solution for this issue?Thank you

May seem like an odd question.  The SB8200 lists a dl speed of 1gb. Mine is about 3 years old and I just updated my service from 500mb - 1gb, but I am not seeing any higher speed. The max I see is in the 500mb area and thats the speed test directly through my router. I have tried to plug my laptop directly to the modem but I never get an internet connection for some reason that way.Thanks

Turn ot off about every 10 days to reset. Won't accept new update so constantly knocks me off the internet. 

I have Xfinity.   Their channels work fine.  But streaming from other providers sometimes have problems.  I note that Hulu which I just got, would drop out 3 times in a half hour.  Video would just drop to whatever cable programming was on at the time.  Also happens, let frequently on Netflix.  Sometimes it just freezes (looks like it’s buffering) and sometimes it freezes before dropping out and sometimes it just drops out.  Called Xfinity and they said modems have end of life of 2-3 years.  Bought mine in 2021.  Suggested I buy a new one.  I’m guessing they just say that every time they don’t know.  I’ve changed their cable box and nothing changed.  I note that people send in logs and get advice.  Can someone tell me how to obtain the necessary logs to post online?  My mesh network is Eero.

I’m trying to add a new Arris Surfboard Cable Modem, but when I tap to add device on the app, it only gives me the options Surfboard Max or Gaming Bridge or Network upgrade kit. I need to add Surfboard Modem, but it doesn’t come up as one of the choices.    

I bought an Arris modem, model SB8200 on Sept 26, 2023 from Best Buy. The unit quit working last Friday. A tech with Cox comm came out and verified the modem is bad.  Best Buy advised me to contact you.

Have a wireless router (Eero) connected to port 1 on SB8200. Works fine. But when I try to connect my laptop (or an unmanaged switch) to port 2, it doesn’t work.I’ve read all of the stuff about how your “ISP only provides you with one IP, blah, blah”. But I called Xfinity and they said anytime you plug something into the modem it automatically assigns it an IP, and everything should be working. The Eero wireless router has a second port, and if I plug my switch into that, everything works fine (AppleTV, laptop, etc.) The obvious response is, “then why don’t you just do that?” and the answer is because I don’t want to use wifi when I don’t have to. I have that router on a timer set to shut off when I sleep, and I want to keep it that way.

Bought the SB8200 3 months ago, but didn’t actually provision it with Xfinity until 2 weeks ago.  I only have 13 devices needing Internet access through my router.  A few days ago, all my devices would drop their Internet connection for a min or two, then it would restore connectivity.  However, after this last instance of dropped connectivity, service never restored.  Xfinity can see the modem and can restart the modem remotely, but router never sees the connection to the modem.  After trying with a spare router and getting the same results, nothing left to conclude except the SB8200 is not passing the IP address from Xfinity to the router OR the WAN port on the SB8200 has completely failed.  I bought a new router (not a Arris modem!), provisioned the new modem with Xfinity, and voilà, the router is now working perfectly with my new modem and all my devices are reconnected to the Internet.  Looks like I wasted my $s in purchasing the SB8200.

Since October of 2023 my download speed would drop to 30 Mbps like every week or month and stay there until I power cycle the modem. I am on a 250 down and 25 up plan with COX. This happens wireless, wired and pc connected directly modem. Service has been working fine since COX ran the line 6 years ago, line goes from outside directly into the modem, no splitters. COX came out looked at the line, did some cleanup at the box and said line is fine and it still happens. I read online that this is indication that modem is going into partial service mode because of bad levels. I have Modem status and logs before and after the power cycle saved in PDF and I can post them here. i just need to figure out if this is the modem or the line.

I purchased the wrong modem by mistake can I return it for a refund  order #59472 I have already purchased the right from you.

My problem is that I purchased a SB8200 by mistake on 5/8/24 couldn't stop the purchase in time so I purchased the right one the SVG2482AC on 5/10/24 I received the 8200 today 5/15/24 can I return the 8200 for a refund I haven't received the other one yet.