since the logic board is easiest to remove I opted to inspect it first, there are some questionable areas where it looks like flux was not fully cleaned and may be causing trouble, I cleaned that up with a flux pen and a iron, followed by alcohol + acid brush

moving along,... the speaker output looks funky as crap, and then there is this



which is a great excuse to use Chip Quik

meanwhile the analogue board is showing issues, I will work my way to that