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I've been trying to repair my Xbox this week after accidentally blowing the 110V PSU on 220V . I've got to make it work with a PC 200W ATX PSU yesterday, but this morning, it started to FRAG. I noted that the 3.3V line has gone down to about 2.85V when the PSU is connected to the motherboard and the PSU turn off after a minute or so. I'm pretty sure that there is a short somewhere in the 3.3V line. I noticed that the Nvidia MCXP3 chip is getting very hot when the PSU is connected, I want to know if this is common, because if not, I suspect that the short maybe inside the chip, which will mean that it is dead