I need a Replacement USB for skylander portal of power?

Unfortunately you have to replace the Skylander or the portal itself. If the portal will not recognize any other Skylanders then fortunately for you it is only the portal that needs to be replaced. If it will read the information from others then the character must be replaced, and more to the point... so will any work/gameplay you dumped into the toy. Like any other piece of computer data, the information maintained in a Skylander can become corrupted or wiped.

If you are getting an error stating A toy on the Portal of Power has a problem, follow these steps to reset your broken toy.

Skylanders SWAP Force

1. With the toy on the Portal, select Pause.
2. Select Skylander.
3. Select Manage.
4. Select Reset. If you are resetting a swappable toy, you must reset both the Top and the Bottom separately.

Skylanders Giants

1. Keep the broken Skylanders toy on the Portal of Power and open the Pause Menu.
2. Return to the Main Menu.
3. Open Settings.
4. Select General.
5. Select Reset Broken Toys.
6. Select Yes when you are asked to reset the Skylanders toy.
7. Repeat Steps 5 and 6.
8. Keep the reset Skylanders toy on the Portal of Power and start a game in Story Mode.

Your Skylanders toy will now work again.

If the screen turns black after returning to the game, try again starting with Step 1.

If the game won't load and you are only seeing an icon on the screen, remove the Skylanders toy from the Portal of Power, put it back on the portal, and try again starting with Step 1.

Try this :)

If you are getting an error stating A toy on the Portal of Power has a problem, follow these steps to reset your broken toy.

Skylanders SWAP Force

1. With the toy on the Portal, select Pause.
2. Select Skylander.
3. Select Manage.
4. Select Reset. If you are resetting a swappable toy, you must reset both the Top and the Bottom separately.

Skylanders Giants

1. Keep the broken Skylanders toy on the Portal of Power and open the Pause Menu.
2. Return to the Main Menu.
3. Open Settings.
4. Select General.
5. Select Reset Broken Toys.
6. Select Yes when you are asked to reset the Skylanders toy.
7. Repeat Steps 5 and 6.
8. Keep the reset Skylanders toy on the Portal of Power and start a game in Story Mode.

Your Skylanders toy will now work again.

If the screen turns black after returning to the game, try again starting with Step 1.

If the game won't load and you are only seeing an icon on the screen, remove the Skylanders toy from the Portal of Power, put it back on the portal, and try again starting with Step 1.

Check this site for compatibility issues.
http://skylanders.wikia.com/wiki/Portal_of_Power

if you're running into a freeze on your PS3, just let us know which Skylander you're using, along with when the freeze occurs for you.
If you can, try disconnecting your PS3 from the internet when it freezes then reconnect

Skylanders SWAP Force

1. With the toy on the Portal, select Pause.
2. Select Skylander.
3. Select Manage.
4. Select Reset.. If you are resetting a swappable toy, you must reset both the Top and the Bottomseparately.

Skylanders Giants

1. Keep the broken Skylanders toy on the Portal of Power and open the Pause Menu.
2. Return to the Main Menu.
3. Open Settings.
4. Select General.
5. Select Reset Broken Toys.
6. Select Yes when you are asked to reset the Skylanders toy.
7. Repeat Steps 5 and 6.
8. Keep the reset Skylanders toy on the Portal of Power and start a game in Story Mode.

Yes that is true, a portal of power cannot have 2+ skylanders on it. However, you may be able to use that same technique, but either use two portals, or put your skylanders down one after the other, not all at once.

Check batteries and resync with usb plug

I had this happen. I tried a wired & wireless portal with the same issue. I reset the game a few times to get it going. I don't think it is a portal issue but rather an issue with the (Wii) game itself.

I had problems sinc'ing the portal of power, I read a solution on a other site which worked for me - try this: Sinc the portal of power while in a different game.

Close Skylanders game and opened another game, I opened another game I have saved on the ps3, then followed the directions on how to sinc - I unplugged the usb then replugged it in. I opened the back of the battery compartment, turned the portal on and then turned it upside down and pressed the sinc button so the light on the side of the portal flashes really quickly. Straight away the light stopped flashing and remained on (sinc'ed). I then replaced the battery cover and closed the game and reopened Skylanders - worked great. Would recommend this method to anyone having problems. Good luck.