Hello everyone, my Nintendo Switch won’t turn on. The screen shows no signs of life. I have some repair experience as a hobbyist, and I’ve already replaced both the MAX77 and BQ chips, but still no luck. It draws some current when plugged in, as shown in the image below, and the chip labeled ENIJ gets extremely hot to the touch, its a BGA chip. Do you have any idea what it could be? Thanks in advance.
Facts i know: There is no shorted cap around the main chips and the EMMC is dead. I already bought RP2040 picofly to use when/if I repair the device.
It’s the RP602Z330C(this ENxx ic generates 3.3v). Any short on 3.3v line would push Enxx chip hard to work and go hot. You might need to check if any short on 3.3v(i.e big cap at pi3usb or the 2 caps next to ENxx ic).
Wish you didnt mess up the ic you have replaced, since you were having major 3.3v rail short at the beginning, those ic you replaced might be good initially.
There is a crack on top of the nand and the switch was displaying blue screen.
Btw i noticed the fuse next to the chip (red circle) is measuring 12.6k ohmn, should it display 100k? The top capacitor is 100k. There is no short around P13 or around any main chips… i dont know what to look next
I have 16k to the ground on that yellow arrow test point. I tested that fuse (red circled) again, and it’s showing 70k, maybe i messed up the reading before, i think it should be 100k tho. This board was working fine; it was completing the first boot step and entering RCM mode. All I had to do was buy another EMMC and install the RP2040 to jailbreak it. I followed a guide and injected some voltage as shown in the image below, with the black wire on the ground (USB port) and the red wire connected to the inductor. I set it to 1A and 4.2V, and after a while, I noticed that the EN** chip became very hot.
I removed the EN** chip and the board is fine now, that chip was the problem. The resistor is back to 100k ohm and there are no shorts. I will wait to get a replacement for that chip. Thanks for your help, jkyoho
