Flux residues -- haven't bothered with a deep clean b/c I haven't been satisfied I'm done soldering.What happens to these flux residues around the welding points? why don't you clean the motherboard with ipa?
Did you know that some flux's are energy conductors and can create interference in the operation of the console ?
Not to mention that some cause corrosion in the components. Take a cotton swab or an old toothbrush and clean that residue.
Why are you using the same type of wire for the grd and +3.3v? What about Ground Balance? These are points that require solid electrical stability for the RP2040 to work flawlessly. You didnt even remove the USB port?
Yes, I know that some can be, so I'll give it a wash and see if that changes anything.
Not sure what you mean about the grd and 3.3v wire. Should it be thicker?
Didn't bother with the USB port b/c I don't have the best hot air station for removing it, and didn't want to take the chance to mess up the pico and not know I had.
Let me know what you're implying with the grd and 3.3v wires, then I'll give it a good bath after addressing that and see what we see. Thanks!