Chosen Solution

I have a power brick of 175w with an adapter connected to a xbox360 Trinity, when I turn on the console. It’s just last like 3 seconds then off. The PSU had orange light on. But doesn’t do anything what do you think it is ?

I’m a little confused. Are you using the power adapter built for the Slim Trinity or are you somehow using a different power supply with an adapter to fit a Slim?