I’m ready to bin this switch i’ve been working on.
I attempted charging port replacement -
Didnt go well so in the end I sent it off and had it replaced. Same fault as before (stuck on battery low charging screen, can sometimes get Nintendo splash and drawing a constant 0.4A).
Following previous advice from @Severence I replaced the M92 IC. Since replacing this I manged to get BSOD but now its black screen and 0A drawn.
Willing to pay someone who can sort this out as I no longer have the time or patience.