Xbox turns off as soon as its turned on, its not the power supply.
I have a star wars edition xbox 360, its a 16 corona motherboard, when I press the power button the blue light comes on and it plays the R2 sound effect and immediately shuts off. Before I consider sending it out for a reflow, as I am not comfortable doing that yet, are there any other suggestions I could try. Where should I test the board with a multimeter. My main experience is with installing Trinity Muffin and Ace v3 RGH chips