Skip to main content

S33 | S34

DOCSIS® 3.1 Gigabit Cable Modem

  • 412 Topics
  • 1,069 Replies

S33 | S34 Announcement (2)

412 Topics
I
The Many
iFrogThe Many
asked in S33 | S34
S33 Blue LEDs have gone very dim over time.

Hey all, I have been using an S33 over the past year with Cox, this is my first time owning my own cable modem as when I had spectrum the modem was free so no need to cut costs and it was a stable modem. Anyway, I’ve noticed over the past year the blue LEDs have gotten very dim, and act as some of them have gone out. The amber and green LEDs are normal brightness. I have gone into the modem settings and have set the front lights to be off under normal conditions, since I only need to know if there are issues, anyway. My question is, should I be concerned of future modem failure? Right now it works fine and my connection is stable. The modem is registered with Arris and has Warranty coverage until November of next year.

164
I
The Many
R
The Many
RizzutojrThe Many
asked in S33 | S34
arris sbg8300 address wrong

Wrong local channels

40
R
The Many
J
The Many
jaredcrobinsonThe Many
asked in S33 | S34
Timing Synchronization failure S33 - Is there a firmware update?

My S33 modem was working great. Then 2 days ago I went to access printables.com to find something to 3d print. The site wouldn’t load. This was curious because I could stream netflix, apple tv, youtube, prime, and my son wasn’t experiencing any lag on Marvel Rivals. To add to the issue, I could access the site just fine from my cell phone connected to the same network. I finally punched in the ip adress to my modem and found in the event log a Timing Synchronization failure with a date of 1970. I checked with the ISP and the issue seems to be isolated to my house so I either have an issue with a coaxial connection or my modem has a problem. This begs the question, is there a firmware update for the S33 that could resolve this? Is my S33 on the brink of failing? I believe the timing synchronization issue is what’s preventing me from accessing certain websites but I’m not certain.

222
J
The Many
K
The Many
KruzenThe Many
asked in S33 | S34
Brand New G34 Loss Power

I just installed the Arris G34 brand new router because Xfinity’s price went over $300.00 per month! It worked great for about 4-hours then the power died! I unplugged the power supply and tried several outlets but the G34 would not power on. All I get when I plug it in is three quick flashes of the blue light then the light goes off. I had to reinstall the Xfinity router to write this. I tested the power supply, and it is producing power the required 12.20 Volts DC. I will return it to Amazon. What a big pain. Think about going to a Motorola router.

71
S
Wi-Fi Warriors
J
The Many
Jope7478The Many
asked in S33 | S34
S33 Dropping internet connection

Modem is only a few years old and lately it just drops internet for a few seconds multiple times a day. Picks it back up quickly without any reset or anything but obviously it gets fairly annoying.

565
S
Wi-Fi Warriors
A
The Many
ALAN7500The Many
asked in S33 | S34
S34 modem burned out

Installed this modem about 3 weeks ago. According to the installer and now Comcast tech the modem has burned out already. Reinstalled the old modem which was working but I wanted to up my internet speeds. My question is how to proceed under warranty for get a replacement? Thanks in advance.

241
S
Wi-Fi Warriors
S
The Many
Steve40th396The Many
asked in S33 | S34
Registering of Arris S33

How does registering my modem affect my ISP activation?

111
S
Wi-Fi Warriors
C
The Many
CaptDThe Many
asked in S33 | S34
How does automatic channel selection work?

One of the posts for fixing slow wifi says that the automatic mode puts you on the most congested network in your neighborhood . I am trying to wrap my arms around this because I always thought that automatic selection would put you on the channel with the best RF stats like power, signal to noise or carrier to noise ratio. Does anyone know what is behind the covers?

81
S
Wi-Fi Warriors
C
The Many
CaptDThe Many
asked in S33 | S34
Wifi is awful - is it a bad unit or poor implementation of wifi 6

I used the setup out of the box and my wifi is unusable in next room with door open. My old router worked much better. Any suggestions on how to configure it for better speeds?

121
S
Wi-Fi Warriors
M
The Many
mustaqThe Many
posted in S33 | S34
s33 slow speed

stuck on 1 gig and upload to 40 mbps i have update with my isp 2 gig and up load to 300 mbps,i think it need firmware update

151
S
Wi-Fi Warriors
S
The Many
steelejThe Many
asked in S33 | S34
Potential S33 Modem Disconnects

I have an S33 modem and I am trying to identify if my internet outages are due to the modem, my provider, or the cable to the provider. I saw a post stating that posting logs could help identify this. When issue is present, the modem is not fully syncing with the provider and is showing a -26 to -37 dBmV for power for downstream. When it functions the level is -12 to -15. Part of log is below when issue is seen. 22/4/2025 20:01:50 3 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC={edit : personal information};CMTS-MAC={edit : personal information}=1.1;CM-VER=3.1; 22/4/2025 20:01:55 5 MDD message timeout;CM-MAC={edit : personal information};CMTS-MAC={edit : personal information};CM-VER=3.1; 22/4/2025 20:01:55 3 Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC={edit : personal information};CMTS-MAC={edit : personal information};CM-VER=3.1; 22/4/2025 20:01:55 6 CM-STATUS message sent. Event Type Code: 2; Chan ID: 13 14 15 16 1

371
S
Wi-Fi Warriors
D
The Many
drichardson2864The Many
asked in S33 | S34
S33 bad after less than 3 years?

I bought an S33 less than 3 years ago. Recently was troubleshooting a slow internet issue and rebooted my modem by unplugging it for a minute. When I plugged back in, it never connected to the internet again (green flashing light). I has my ISP come out today and they replaced all the cables and still were unable to get my modem to connect. The tech said modems typically last only 2 years and that mine may not have the latest firmware update or is just gone bad. He installed a different modem which connected immediately. Is it true this modem could have gone bad after less than 3 years of use? It’s out of warranty now, so I’m unsure what else I can do to validate if it truly is bad or not.

481
S
Wi-Fi Warriors
R
The Many
Rene1970The Many
asked in S33 | S34
arris s34

Connect arris Modem

291
S
Wi-Fi Warriors
D
The Many
dsinghusThe Many
asked in S33 | S34
Slow speed internet connection on S33

Hello, I was using Xfinity XB8-T for last year and had lots of connectivity issues. Yesterday I thought of going back to S33, which I was using during 2021-22. I have had stable connectivity for past 24-36 hours but my speeds are slow. On Xfinity modem I used to get 1200 Mbps down and about 35 mbps upload whenever it was working. I have my S33 plugged into cable and then my eero router is plugged in 2.5 ghz port. My S33 gives me like 600 mbps download and about 25 mbps upload? How can I make it better to give me speeds like what Xfinity plan gives me. I am on 1300 Mbps down and 40 Mbps upload plan. Please guide me as to why I am not able to see same speed. Is S33 not compatible? Is there a new firmware I should be downloading for S33. I was not using S33 for past 2/3 years. Thanks for replying back.

241
S
Wi-Fi Warriors
B
The Many
Big DogThe Many
posted in S33 | S34
surboard sb8200v3

Not connecting to my internet

203
S
Wi-Fi Warriors
A
The Many
Aaron1DacostaThe Many
asked in S33 | S34
Change the Admin Password in S33

I want to change password

4517
S
Wi-Fi Warriors
S
The Certified
salubryanThe Certified
asked in S33 | S34
Is there a way to delete my child's profile?

My teenager's profile suddenly quit working. My thought is to delete it and then set it up once again, but I can't find a way to delete the profile. Or, is the solution to uninstall the app and start over completely?

101
S
Wi-Fi Warriors
R
The Many
RickgThe Many
asked in S33 | S34
S33 Hostgator issue cannot get email, ftp, cpanel restricted

I have been working with 3rd level support with xfinity (Comcast) and they are stumped so far. I have worked with Hostgator and they state because I can access my account outside my network it's not them. I have tried Eero tech support and they tried a suggestion to change my IPv4 and that did not work. Here is the problem: I can no longer access my email addresses (multiple addresses through same host) using Hostgator.comAlso I cannot get to www.mywebsite.com/cpanel and also cannot log onto my websites using filezilla. As of yesterday I could and did not have any problems and did not change any settings. When I try to use find my websit I get my IPV6 but it cannot find my IPV4. I can access all of the above via my iPhone on the cellular network when I turn off my WiFi. I cannot access the above using WiFi. I am trying unsuccessfully to connect using a desktop hardwired on my network. Windows 10 pro. I have an Arris surfboard s33 modem. The eero is connected to the modem has the latest

316
R
The Many
T
The Many
TaplitskyThe Many
asked in S33 | S34
S34 cant access interface and overheat issue

Since August 2024, I have S34 modem. It always ran a bit hot. Recently, I can’t log in to the web interface to check event log. I purchased a different modem from another manufacturer. No Problem in heat dissipation and logging in to the interface! What should I do with the S34?

813
S
Wi-Fi Warriors
M
The Many
mstetsonThe Many
asked in S33 | S34
Tried and failed to upgrade from SB8200 to S34 on Cox cable network

I tried over two days to replace my working SB8200 on my home network with a new S34. My ISP is Cox. On the first day I tried many times to activate it over the phone to a Cox technician. The Cox tech said she could see the S34 activated on her end. On my end I saw a solid blue LED indicator, but I got no connection to my wired ethernet LAN or my eero PRO wi-fi router. On the second day a Cox technician came to help. He worked for over an hour trying various things, but got the same result. Finally he replaced the S34 with a Cox Panorama modem/wi-fi router and got the system working as it was with my SB8200 router. Now, however, I am stuck paying rent for Cox’s equipment, so I am not done trying to solve my problem. So, a few questions: (Question 1) Does the S34 indeed provide a performance upgrade over the SB8200? I have Gigablast service from Cox, a sprawling LAN covering 6,000 sq ft, and an eero PRO wi-fi mesh network with 6 routers total. I am planning to upgrade the eero PRO gatew

581
plemans
Juggernaut
K
The Many
KRSmith84The Many
asked in S33 | S34
S33v2 Keeps Dropping Internet Connection

I am having a recurring problem. At random times, my S33v2 Modem will lose its connection to the internet. No warning, and no clue why it is happening. Power cycling the modem restores its connection, and my ISP cannot detect any problems. I run the modem through an ASUS Wi-Fi Router, and when the connection drops, we still have network access, so I know the router isn’t the issue. I have looked through a few threads, and have accessed the Web Manager to check the signal power levels. The downstream power levels and SNR levels are within the recommended range. The upstream power levels however, are within the acceptable range (35 - 50 dBmV) according to my ISP (Xfinity), but NOT within the range suggested by the manufacturer (45 - 51 dBmV). Picture below. I have done a hard reset of the modem, via the reset switch on the bottom, but nothing changed. I am at my wits end with this, because there is no predicting it, and I’d like to avoid buying a new modem if possible. This one still wor

1505
plemans
Juggernaut
A
The Many
apoe9365The Many
asked in S33 | S34
2.5g lights not working on S33

I am linked with my eero pro 6e router through the 2.5g port but there are no link lights. I also noticed when I boot the modem there are no lights on the 2.5g port but the 1g port has lights. Any thoughts?

1259
S
Wi-Fi Warriors
M
The Many
MelissaosuThe Many
asked in S33 | S34
no ethernet port

I do not have an ethernet port on my laptop. How can I set up the modem? I cannot reach the manager page.

423
S
Wi-Fi Warriors
A
The Many
apoe9365The Many
asked in S33 | S34
only getting partial web manager on S33

Any ideas?

372
A
The Many
J
The Many
JmillsThe Many
asked in S33 | S34
ISP shows signal to S33 but no connection

Breezeline shows signal to my S33 but have no connectivity through eero router or through direct hardwire to the modem!

402
J
The Many

Solved topics

Popular tags

Terms & ConditionsCookie settings

Cookie policy

We use cookies to enhance and personalize your experience. If you accept you agree to our full cookie policy. Learn more about our cookies.

 
Cookie settings