Switch OLED Voltages missing

Nintendo Questions Switch OLED
1

Hi,

I’m actually stuck with this Oled repair. Not water damage, looks like new. After pressing On button it goes to about 160-170mA after one second stuck at 110mA. Actually reballed EMMc and checked with a reader, data is readable. Voltages around MAX77620H 1,05V, 1,1V, 1,8V, 3,3V and Vsys. No shorts found. Any ideas? Is there a PDF what voltages have to be present Stage 1-2 on OLED switch? Only found for normal switch, but it is different.

2

if you have 1.3v stable, you are likely in stage1 already. Max77812 and fuel gauge ic checked?

3

Around MAX77812 I found Vsys, 0,800V and 0,600V. Fule gauge found 1,8V and Vsys. No shorts

4

if you have 0.6v on max77812 left 2 coil, you should have image showing already.

image
image1108×646 72.5 KB

5

at this points I have 0V. On the other side is 0,6V and 0,8V

816663b95ca4ad8b8bc812075c9b29bbea52bb52
816663b95ca4ad8b8bc812075c9b29bbea52bb521108×646 117 KB

6

I see, do you see any crack on fuel gauge under microscope, if not this is more likely a emmc issue.

7

Yeah, that’s emmc issue, replace with compatible. 170mA with drop to 100-120 is emmc for sure