Xbox power brick is flashing red and green

2x post, but I should also note that when it flashes red, the power brick stays a green color.

You could try, but I don't believe it's the power brick that's the issue. When the console is turned on, the power brick should be green. When the console is turned off the power brick should display an orange color. If it was flashing orange, red, or no
light then there would be a problem.

Hello, first it's a pleasure to be able to help you today.

My name is welcome to the community.

Hello David, the power brick that is emitting these lights would be from your Xbox One, if so then you have an alternative source because the original Xbox power brick does not emit red or green lights.

Probably your power brick is damaged.

The ideal would be to take it to a technical assistance to assess whether there is any damage to the console.

Check this Reset power supply solution support.

Could you do something for me? When you turn on the Xbox 360, and the three red lights are flashing, could you look at the Power-Brick and tell me if it is Green, Red, Orange, or not lit at all? I have one more suggestion.