An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert that has over 10,000 points.
Re: cable modem 315
To my understanding:
Your concern repair cable modem(s) particularly RCA DCM315.
Your requirement schematic diagram of power supply.
The main issue, modem will not power up.
The power supply of most (but not all cable modem) is a wall adapter. Common output is 12 volts at about 1 ampere. The basic design is a small transformer, bridge or fullwave diodes and a capacitor. Newer designs uses an SMPS type. To my understanding, an RCA RCA DCM315 uses a similar adapter but not 12 volts @ 800mA. Internally, basic cable modem regulates the raw power from the adapter to 1.2, 3.3 and 5 volts. Most (but again not all) would be using a single chip CX24943 IC. This IC triggers the LED illumination. So, it may be that the cable modem is receiving power and regulating it, but if this IC will not trigger the LEDs, then in appearances, the modem will not power up making the problem not a power supply issue..
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards. Thank you for using FixYa.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
You could have only a damaged power supply, please look in an Eectronics parts store another with the same characteristics (input and output voltage,current, plug type) and retest, maybe your actual AC adaptor is broken inside and that's why it doesn't power up your modem correctly.
It can be an issue with the modem or with the line. When the line drops the link then the modem shows only two lights. And, when you power cycle the modem (unplug and replug it) it establish the session again with the comcast.
So, i'll suggest you to get the line checked first and if comcast finds that line is working fine then get the modem replaced.
You open up Internet Explorer and type in your i.p address, example : 192.168.0.2, you can normally find your i.p address in network connections, and open the internet connection up, and click on details and your i.p address should be there. once you are on your ip address settings, click wireless settings and then there should be security options, and then you can put security on.
ok, ur old modem was configured for those two devices to work to gether
so u have to do the same here
*have ur modem connected directly to ur comptie
*go to ur command prompt if u have vista ( start * search * type cmd)
xp (run then type cmd)
the type in the screen that poped up ( ipconfig) enter
*look for default gateway type that in ur browser address
*should take u in ur modem interfase go to (advandced | PPPlocation | then set that modem on
BRIDGE MODEM and the modem should restart then connect router that should do it
you can't set teh modem to bridge mode, however, you can set the router to bridge.
The linksys should have bridge mode configuration in the uer guide.
connected the 2 router together
configure the IP address of the liksys to be inthe same subnet as the moem, but out of the range of the DHCP of the modem. ie. DHCP address 192.168.0.2 through 220.127.116.11, the linksys should have the IP address as 192.168.0.200
disable the DHCP on the linksys
setup the wirless just the way you would if ti was the modem.
connect from the modem LAN port to the LAN port on thelinksys. leave the WAN port open.
This RCA DCM 425 is a cable modem only its not even a router, its just a plain cable modem that is being provided by some cable company like Cox and Comcast, try searching again for a different box there they have a brnad name of Linksys, Netgear or Dlink because those are the common manufacturer of wireless router ...