Ram or Ram joint issue most likely, possibly the SoC.
remove the SoC shield cover and try putting slight pressure on the Ram ICs while Biskeydump is loaded, if the graphical artifacts change or go away then that’s confirmation, try a ram reflow in that case.
Yeah, that’s definately a problem, (though it’s completely seperate to the grpahical glitches your seeing) Switch uses all data lines, which increases r/w speeds, it won’t boot stock OS without all of them afaik, if this is a liquid case, then I would closely inspect the traces and Vias at the EMMC and ensure theyr’e all intact as that’s most common, after that would be impact and ball/joint issue.
That being said, I don’t know off the top of my head what these lines measure in circuit and on the EMMC out of circuit, so that might be worth confirming, as maybe it’s open SoC side or maybe there’s a series passive open on this line (sorry don’t remember if there is)
I would take care of the graphical related issues first though and worry about the EMMC later.
some progress i put pressure on the RAM and nothing.
then put some pressure on the SOC (side facing RAM) then the geen graphical glitches turned to black/white lines. but error remained.
next i decided to put pressure on SOC before sending payload and it loaded all keys.
