I called Tier 3 and asked to have it removed yet it still shows up as deactivated. My Zoom disconnects for like 30 seconds every 2-4days, it seems to fail when it send a DHCP request, although does not reboot. It works fine until it send a request which fails and we lose internet, I'm wondering if could this be a defective modem? I'm really getting tired of this, my SB6141 acted like it was overheating and overloaded and now this Zoom disconnects every 2-4 days.

The firmware could indeed have bugs, just look at earlier Motorola D3 modems and it took a few firmwares to get them stable, now they are pretty good. My issue seemed to affect mostly phone, internet speeds were fine while tv just had correctable errors. I had 5-6dB swings in the signal, from 5-6dBmV to 0dBmv each channel was different and it changed every time you refreshed the page, heck TWC couldn't even see my modem or mta online, the phone system checked my phone service and started to freak out because it couldn't see it, but I called in using my home phone service so obviously it was working, although I guess I sounded crappy to Tier 3. I then knew something was off when Tier 3 saw all my errors on my log, saw the signal going all over as well and agreed something wasn't right so we had a tech sent out. While all this was going on I checked myservices and the HD DVR showed up as online, while both my modem and mta said "issue found", this lasted for like 30-45 minutes then stopped. I was able to connect the signal bouncing with rapid sporadic jumps of both uncorrectable and correctable errors with a single T3-timeout.

I doubt this is it, but I believe they had my modem in the system as an SBG6580, which is Broadcom based, while we know the SB6141 is TI based, I wonder if that could cause an issue somehow? Another tier 3 I talked to to get my Zoom provisioned had to get my Zoom activated by saying it was an SBG6580, because they couldn't find a code for the 5341J, although said it was supported. The Zoom uses a Broadcom 3382 SoC while the 6580 uses the 3380 so they are much closer than the TI SB6141.

My signal never used to be 10dBmv, and that's with a 7dB(modem),7dB(mta),3.5dB(to tv 3-way splitter) 3-way splitter in Nebraska Winter Weather, so this is part higher due to the cold, possibly part of when they added a new color wavelength on the fiber. There solution was to add a 5dB splitter right before the modem to bring it down closer to 0dBmV.

»dl.dropbox.com/u/38348368/Signal···r%21.PNG <-- This is from the day when it jumped all over, before it was 5-6dBmv.

»dl.dropbox.com/u/38348368/Signal···wsnr.PNG <-- Low SNR

IMHO I think SB6141's are complete junk, I've had two of them and both correctable and uncorrectable error jumps, I think I've traced it to them using a TI chipset, which I've read are less tolerant to faults. I noticed that the TI chipset isn't as accurate measuring the signal either. What I noticed with SB6141 is that it seemed to slow down any stream such as TWC's tv app for pc or amazon instant videos which caused them to buffer, but speedtests showed fine(30/5), so it took time to figure out what was causing streaming issues. So I decided to buy a Zoom 5341J because I knew something was still funny. The Zoom 5341J matches up with the signal that the cable tech was reading at the office. Even the SNR is better with the 5341J vs SB6141, 37-38 before its now 41! Correctables are now at a minimal(101 amongst 4 channels) and I have zero uncorrectable errors! So yes so far I'd recommend buying a Zoom 5341J if anyone out there is having issues similar to mine with their SB6141!

My Downstream power is a bit hot, but the SB6141 showed 7dBmV while this 5341J shows this:
[att=1]

T3 time out errors mean you have noise on the upstream, it can be as simple as someone in he area having illegal cable hooked up to a bad device and its causing noise or bad tap. Further since your node uses upstream modulation of 64QAM u have less room for noise, there is really no need for 64QAM from cable company standpoint on upstream anyways for the packages they offer, it only leads to problems. But yes you most likely have upstream problems, however those high uncorrrectable numbers are on downstream so I wouldnt rule out noise thats affecting both downstream and upstream.

I have that same firmware and it has been working perfect since March or April when I activated it. Our of curiosity, does your modem show any upstream bonding?

I am having some similar issues. I have RR .. had the SB51xx modem and purchased a SB6141, got it 4 days ago.

While my SB51xx was rock solid for years, the SB6141 is terrible and is rebooting itself every 1-3 hours or so. The signal levels all seem fine, according to Motorola's specs. -- Plus, hey. the old cable modem was perfect for years, although it was docsis 2, and the sb6141 is 3.

I did an online chat with RR's tech support .. the guy said "you have old firmware, go to Moto and install newer." I didn't think that was right, since Moto doesn't have firmware on their site and believed firmware needed to be pushed by the ISP. He didn't believe me. I verified this with Moto, naturally.

Question: Someone with a SB6141, can you tell me what your firmware is? Here's my info from »192.168.100.1/cmHelp.htm

Model Name: SB6141
Vendor Name: Motorola
Firmware Name: SB_KOMODO-1.0.6.3-SCM03-NOSH
Boot Version: PSPU-Boot(25CLK) 1.0.12.
Hardware Version: 7.0

Firmware Build Time: Aug 18 2011 10:27:53

The bigger question is .. if I get them to push a new firmware .. will that even help? It's really maddening how often it is rebooting .. I think it's the log entry "No Ranging Response received - T3 time-out" that puts it into a death spiral.

Just to give an example of my earlier post:
5943703026+419+1739=5943705184=100% of codewords
1739 uncorrectable codewords= 0.000029% of codewords or 1 uncorrectable in 3.4 million codewords.

The uncorrectable codewords are not a problem.

Ah, well there is nothing about Fremont, or even Lincoln on the network status page, but they did finally upgrade to the new navigator last week, and I was told by the office sometime in September for Docsis 3, but I won't believe it until I see it. EDIT: Also both modems went out, seems to be something with TWC itself.

While I was sleeping it seems that my modem switched channels from 741MHz and 36MHz to 735MHz and 32MHz and when I checked the logs I got one 'T4 timeout' and two 'SYNC Timing Synchronization failure - Loss of Sync' errors. Clearly something is very wrong, I'm going to to have Tier 3 check on my arris modem for the same errors since I cannot get into it myself. Here is a picture:

Those 5000 correctables from the log is indicative of noise problems on the line, outside of the residence.
Contact TWC tech support and give them this information.