Light Blue Screen of Death

Nintendo Questions Nintendo Switch
1

Hello,

After several repairing steps (among them an APU reflow due to BlueSOD, ESD filter replacement around the left joycon connector, resoldering of pins of the digitizer connector) I have now a working motherboard. After several push in and pull out of the battery connector (I assume this is the root cause but maybe not) I have now the BSOD back but the color is lighter (not the usual dark blue but a lighter blue). I have read somewhere it could be a corruption of the NAND, so I rebuild it with NandFixPro. I can’t boot neither. Black screen if I select OFW or CFW from Hekate and still LightBlueSOD if I ‘stock’ boot, just pushing on the power button.

Can it still be a solder ball issue under the APU (my main guess) or can it be a software issue afterall?

Thanks for your support

2

Just one additional finding on that board, with battery unplugged and charger inserted, the screen lights up and displays a blue screen. I thought that the screen could not light up if no battery was plugged.

3

Can also be RAM or the RAM pads on the APU (right side of the APU). Check the coil of the ram (Below the APU the right top coil if it’s a v2).
But my guess is the APU, just reball it and place it back (or it has ripped pads).
Hekate boots in pretty low status