Question about RCA Thomson Digital Cable Modem (DCM305R)

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Disambiguation of transformers for DCM425c 12VDC, 750mA or 800mA?

I have a new broadband cable modem DCM425C listed as 8-12VDC.
I want the correct power transformer, but am not sure which of the 2 I have is the correct one.
Both are rated 12VDC but one is rated 750mA and the other 800mA. Which is the correct one?

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50 mA wont make a difference, both will fluctuate when a load is on them, just make sure polarity is correct.. (tip + or -)
Regards...

Posted on May 30, 2009

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Posted on Jan 02, 2017

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Battery,3.75v,800 mah


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I have the rca dcm425c modem wired to my mac in my office. I want to use google logitech tv in my other room with my big screen tv. I was told all I needed to add was a router that I would hook up to my...


USB is NOT RJ45 connectors. They are very differant as in water and bar of steel.

RCA DCM425 Digital Cable Modem eBay


Read backside cable connections. "ETHERNET" connect to router "Internet" connection. Plug ALL devices into "Ethernet" dump USB cable and store away. USB may shut down Ethernet connection while connected.

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The internet light is flashing on the rca dcm425 i reset it and the router and still cannot connect but the cable is working and the light just flashes


My RCA DCM425C from Comcast had the same problem when I came home Saturday, 11/14/09 (coincidentally the same day you posted). Had been working fine - cable TV still works fine including On Demand, etc. The Internet light was blinking. Occasionally I'd see it try to work from one light to three or four, but it always came back to one. Called Comcast, they said their side showed "no signal". Sent out a tech today. He replaced the cable modem, reprovisioned it (I guess if I had a backup ready I could have done the provisioning over the phone maybe?)), everything's great. Lasted about a year and a half. When I logged in via http://192.168.100.1, it said it was still in Step 1 of 5 ("Tuning"), and the logs showed a whole bunch of errors on Saturday that stopped after that. Diagnostics would always freeze the built-in web server and require reboot.

Nov 14, 2009 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

1 Answer

I have the RCA DCM425C cable modem and also Vonage phone service. So my modem ethernet connects to my Vonage internet. I would like to go wireless in my house. How would I do this?


You would connect from the output of the Vonage modem to the wireless router and then from the wireless router you can connect Ethernet to your desktop if you have one and then anything else can run off of the wireless.

or

get a wireless router / cable modem combo provided by companies such as netgear then you would connect the Vonage to the router through one of the available Ethernet ports and any other Ethernet connections to the router as well and anything else wireless would work wireless.

Nov 10, 2009 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

1 Answer

I have a Dynamode wireless router which i have configured however the cable which came with it does not fit into telephone connection. What other cable do i require


The nework cable that came with the wireless router has RJ45 connectors (8 wire cable) and the telephone cable has narrower connectors RJ11 (4 wire cable) or RJ12 (6 wire cable - less commonly used).
I assume the Dynamode wireless router does not have a built-in modem and therefore needs to be connected to a broadband modem.
If broadband modem is a cable or DSL type, the broadband modem is connected to the Dynamode WAN/Internet socket with a RJ45 LAN cable.
If you have a broadband DSL modem you need a RJ11 phone cable to connect the moden to the phone socket.

Sep 08, 2009 | Computers & Internet

1 Answer

Net work key code


I'm guessing you're trying to connect through wireless.
Try connecting physically with a cable, then you can access the controls of the router and set the network key to whatever you want.

Sep 27, 2008 | RCA DCM425 DIGITAL CABLE MODEM (RCADCM425)

1 Answer

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No and why doesn't your internet provider... provide a cable modem?? Did you just ask them to enable broadband internet service? So now you'll have to provide your own cable modem.

If what you say is correct you need a cable modem like a motorola surfboard from BestBuy.... then the cable modem plugs into your Linksys router and your PC's plug into the linksys router also.

http://www.bestbuy.com/site/olspage.jsp?skuId=8229044&st=motorola+surfboard&lp=1&type=product&cp=1&id=1168043113583

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RCA DCM425C


What it sounds like to me is that your router has been running for a while, and thus start to break down slowly. You coul try power cycling it.

power cycling:
1.) Only unplug the power cord from the modem only, for about one minute.
2.) After one minute has passed, plug the power cord back into the modem, give it a few seconds to boot up again, and it should work.

If the modem still does not work, then the problem might lie with the computer itself, very hard to see happen, but it could still happen.
If in then that case, you would have to system restore your computer to an earlier date. that it was working fine on.

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