Symptoms of a dying DOCSIS 3.0 Technicolor TC4350 cable modem?

-
I pay for 150 Mbps internet service and I'm getting very inconsistent results at speedtest.net, only getting between 11 and 24 Mbps down. My upload is sometimes higher than the download which is uncommon for home services and not what I'm paying for.

Here's some screenshots from speed test runs including a screenshot of the monitoring graph from my OpenWRT router. Notice the strange drop off in the middle of the test run.





A major sign that points me toward a bad cable modem rather than problematic lines from the ISP is: earlier this morning, I lost internet -only power, link, and DS light (flashing) were lit- and I tried unplugging/re-plugging the barrel connector to power on the back of the modem to no avail... same indicator lights, no internet. This was with a 2-4 minute cooldown period.

Then I tried unplugging the modem barrel connector and letting it cool down for 30 minutes to ambient temperature; it didn't turn back on at all (no lights) when I plugged the barrel connector back in. My ISP suggested I try a different power strip. Strangely, with the barrel connector untouched, I plugged the 3-prong mains end into a different outlet and the modem turned back on and it brought the internet back up. Power cycling it again by swapping to the original outlet did not make it fail again; that is, it operates normal with lights and working internet.
However, I'm still thinking the modem is going bad as the speed tests shown above, which I ran after all this power cycling business, indicate strange behaviour and failure to reach quoted service speeds.

This is an inopportune time for my cable modem to have issues as I need reliable internet to run my new Woocommerce/Wordpress-based website at https://capitalindustriesmarketplace.com/shop/

Anyone else experience similar issues with their modem?

Comments

Post a Comment

Popular posts from this blog

Calculating total interest accrued while paying down the simple interest loan periodically.

-
I was unable to find a web service or calculator on any websites that had a simple interest calculator in which the total of the loan was being payed down regularly. I was forced to make one in Excel. There are plenty of amortization calculators out there that generate the schedule for a loan with compound interest, like a mortgage, but none that show the schedule for a simple interest loan, like some HELOCs (in Canada). My Excel spreadsheet allows one to compare an amortization schedule on a compound interest loan to a schedule for a simple interest loan. This is useful if you want to see the affect of making payments on a simple interest loan, equal to the same amount at the same time of the month on the same frequency as you would on a mortgage. The spreadsheet assumes interest for the simple interest loan is calculated daily and that payments against the loan are applied to the interest accrued first, and then toward the principal. It can be tweaked if you wanted to calculate i...
Read more

A list of "All-Weather" tires with the Mountain/Snowflake symbol and where to get them

-
Image
Though the design and compounds have been around a few years now, it was surprisingly difficult to find tires that are truly All-Weather (good for every season) per Transport Canada standards and meet or exceed the Rubber Association of Canada performance requirements. Since my tires need replacing and I'm not looking for soft winter-specific tires, I have compiled a list of tyres that have the mountain/snowflake rating based upon my search. Perhaps you'll find this list useful and that it saves you time. Nokian pioneered this class of tires and was the first to market but there are now a number of brands with a limited selection. http://www.wheels.ca/news/all-weather-tires-are-not-the-same-as-all-season-and-heres-why/ These makes include: Kumho, Toyo, Falken, Michelin, Vredestein, Hankook, Yokohama, and Nankang, Michelin, Multi-Mile, and Muteki.  Additionally, some are exclusively sold at certain retailers. Tires that have the 3PMSF icon and are all-weather cap...
Read more

New annoyances: Windows 7 and Bluetooth enabled devices.

-
Thorough testing on my part has proven that Windows 7 can not receive large files, approximately anything larger than 225 KB, from some Bluetooth devices. In this case, my Nokia 6301 can not send to the "fsquirt.exe" utility on Windows 7. I tested this with 3 different machines running Windows 7 (6.01.7600), two laptops with built-in bluetooth and a desktop using a bluetooth dongle. The error message offers no clue as to why or what happened. All it says is " Bluetooth file transfer not completed " " The transfer was cancelled by the Bluetooth device or Bluetooth enabled computer. " However, the Nokia 6301 has no problem receiving large multi-megabyte files from a PC running Windows 7. The Nokia 6301 is also able to send/receive large files to other devices (phones, PDA's), and computers running Windows XP, Vista, or Mac OS X. On the other hand, Windows 7 was able to receive files over bluetooth from other bluetooth-enabled devices, including: com...
Read more