There is no power for the modem, but the power adapter is plugged in

you try form USB or LAN interface \\Ethernet connection (recommended)

1. Plug one end of the RJ-11 telephone cable into an unfiltered telephone wall jack (enabled for Sympatico High Speed Internet service).
2. Plug the other end of the RJ-11 telephone cable into the DSL port on the back of the modem.
3. Plug one end of the RJ-45 Ethernet cable into your computer's Ethernet port.
4. Plug the other end of the RJ-45 Ethernet cable into the Ethernet Port 1 on the back of the modem.
5. Insert the rounded end of the power adapter into the Power port and the dual-pronged plug end into your power outlet.
6. Press the power button to turn on the modem.

USB connection

1. Plug one end of the RJ-11 telephone cable into an unfiltered telephone wall jack (enabled for Sympatico High Speed Internet service).
2. Plug the other end of the RJ-11 telephone cable into the DSL port on the back of the modem.
3. Plug the small, square end of the USB cable into your computer's USB port.
4. Plug the wide, flat end of the USB cable into the USB port on the back of the modem.
5. Insert the rounded end of the power adapter into the Power port and the dual-pronged plug end into your power outlet.
6. Press the power button to turn on the modem.

If you are connecting the router to a cable DSL satellite modem, please follow the steps below:
1. Place the router in an open and central location. Do not plug the power adapter into the router.
2. Turn the power off on your modem. If there is no on/off switch, then unplug the modem's power adapter. Shut down your computer.3. Unplug the Ethernet cable (that connects your computer to your modem) from your computer and place it into the WAN port on the router.4. Plug an Ethernet cable into one of the four LAN ports on the router. Plug the other end into the Ethernet port on your computer.5. Turn on or plug in your modem. Wait for the modem to boot (about 30 seconds).6. Plug the power adapter to the router and connect to an outlet or power strip. Wait about 30 seconds for the router to boot.7. Turn on your computer.8. Verify the link lights on the router. The power light, WAN light, and the LAN light (the port that your computer is plugged into) should be lit. If not, make sure your computer, modem, and router are powered on and verify the cable connections are correct.9. Skip to page 16 to configure your router.Connect to Cable/DSL/Satellite Modem OR

To solve this problem, follow the link below and follow the instructions on the linked page on how to solve this problem. For me to give you instructions here, it would be too long so I set up this link that will take you to solve the problem you're having ftp://ftp.dlink.co.uk/dir_products/dir-600/manual/DIR-600_B2_Manual.pdf

Sounds like Radio Shack sold you a bad power adapter or an adapter that doesn't meet the power and current requirements of the modem. Bring the old power adapter and the new one back to Radio Shack and tell them to get you one like the old one.

Try to plug the modem in a different power outlet or try a different power adapter with same specs; if it does not work then modem could be defective ( hardware issue )

Try the following steps:
1. Disconnect the modem's power adapter.

2. Reinsert the power adapter directly into the wall socket.

3.Remove any power strips or surge protectors temporarily to ensure that these items are not preventing the modem proper operation. Note: Make sure that you are using the power adapter that came with your modem.

4. Plug the power adapter into a different wall socket in another room.

5. Press the reset and hold the reset button for 1 minute. Then turn it off for 1 minute, and then turn it back on.

6. If the power light is still red, then you will need to get a replacement.

Try plugging the modem into an outlet in a diff room, you just need the modem and the power adapter that came with it.

You might also want to try to reset the modem, it usually has a small recessed reset button that you'll need a pen to push in.

If that still did not do the trick then you'll need to replace the modem.

try to plug your modem to another outlet like the one in your kitchen or bathroom. if you are using a surge protector, bypass it, plug your modem directly to the outlet. if still no power, try to use another power adapter, if it still not working, get a replacement modem.

power adaptor change

Found the answer on DSLDepot.com.

goovy75 I want to say what is the voltage of the d/c adapter and >>>>(where is the positive inside the plug or outside)<<<< + .I buy this modem in a flea market and i dont have power adapter.
goovy75 CAN'T READ!!!!!!!!!!!!!!