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His all, I was wondering if someone could help with an issue I have on an Xbox One. It won’t power up. When the brick is plugged in the light stays orange and the fan doesn’t even try to move when plugging it in. 12V rail is fine as are all mossfets on the 12V rail. When checking voltages, all of them seem fine except the 3.3V. All 3.3V check points give me a reading of 2.4V no matter what area of the board that I check for 3.3V. Does anyone know what could cause this and what to check for to resolve this issue.
I don’t really know about Xbox repair but it sounds like a power supply problem Suggestion: Check all voltage regulators on the Main board, I will attach a photo on where they are and the component values Here is an image of the 3.3 voltage regulator (marked with red X)
Tim Tsamtsikas check your standby voltages and let us know where you are checking the 3.3V rail. Have you considered inducing the proper voltage to the circuit and checking the components to see if and which one will heat up etc. Most failed componenrs will heat up if you inject voltages to it.
