Switch won't boot, only blackscreen

[b4lkaan]

Hi,
Until yesterday my mariko switch with sx core and atmosphere worked perfectly fine.
Today as I wanted to boot, I only got a black screen and the led on the back flashes in blue 3-4 times and
keeps shining in turqouise after that.
Somebody had this problem already and has a solution?
Thanks in advance

 

[BullsOfLime]

*Push*

I have the same problem on my Switch OLED, can anybody offer a solution, what a blue light means?

 

[BullsOfLime]

I updated the firmware of sx core on the PC, formatted the sd card and put the latest atmosphere on it, disassembled it again, soldered the contacts again, put it back together and everything worked. Apparently it's really a matter of bad soldering.