Simply unplug your "brick" from your 360 and your wall, if it is hot move it to a well ventilated area and allow it to cool for several hours, when it have cooled down try plugging it back up and everything should work fine, if not you may need to contact Microsoft.
For other light indicator meanings and solutions on how to fix it, i will recommend you to read the tutorial article at: http://www.unique-stuff.co.cc/fix_xbox_ac_adapter_problem.html
It has lots of solutions on how to fix different light indicator on both your console and XBOX ac adapter.
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you can get your xbox 360 ac adapter to work with your xbox 360
It's the giant grey thing on the power adapter.
reset it and try again or contact Microsoft
You either have to have the wireless adapter or the xbox 360 slim (which is better)
What u have to do is let it cool down and for the slim you have to open the ac and clean it or open it and let cool down