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EricHiggin said:
SvennoJ said:

Great info. My 360 gives error code 0003.

https://xbox-experts.com/errorcode/E03/0003/
The CPU is somehow not getting clean power, can be a cold solder joint under it or one of the external parts like a missing cap etc.

Known fixes:

1) Scan the mainboard and make sure that there is nothing that might short something out, like metal chipping, components, that moved out of place while reflowing, etc. - Especially in the CPU area
2) Replace MOSFETs and regulators that are known to cause it if they were blown
3) Check if the standby voltages are existent, if they are not at a certain area replace the parts in the area which are likely to be defective.
4) Reflow the CPU
5) X-Clamp replacement

That doesn't sound like the quick fix, replacing psu, I was looking for :) Which still needs to be replaced anyway.

 

Mosfets yup. Regulators I haven't seen to many people talk about.

Clean power and voltage issues could be caps since your new psu is most likely fine.

Reflow the CPU or GPU is pretty standard with the xenon boards and not an easy fix.

X-clamp replacement would be great. Newer 360's apparently got stiffer clamps. A few new clamps and some new paste would be an easy fix.

I took it to the shop today. Turns out my old power brick is fine, it's only the console. He gave me a refurished one to try, said I can have it for $10--$20 bucks if it works alright. Those old white 360's aren't worth much anymore apparently. I guess I'll add it on to the tally of the ps4 pro on Thursday, pop HDD over and back in business for a while. Easy 'fix'.