Switch shows Nintendo logo then turns off (no charging icon in left side)

Hello,

I will to try to explain the problem:

I get a 2nd hand Nintendo Switch with water damage. After my inspection I can see few water damage in (and around) usual chips (corrosion in M92T36, BQ24193, PI3USB) and battery connector (and bottom PCB in same area) then I clean the PCB and check some weldings, all looks like ok.

I don't know the installed firmware. Only shows Nintendo logo then turns off.
I can test that can charge with an usb tester but don't shows the charge icon in the screen.

I checked the capacitors (and others) around M92T36, BQ24193 and PI3USB for any issue and all looks like ok.

I can join in RCM mode but when I try to launch Custom or Oficial firmware I have the same problem, only "Nintendo" logo and off.
I try to restore BOOT0, BOOT1 and RAWNAND extracting my own keys downloading and using an original firmware with TegraRcmGUI v2.6, memloaderv3, HacDiskMount1055 and ChoiDujour122b following this tutorial:



Following the tutorial all looks like ok but when I mount rawNAND in TegraRcmGUI with memloader and I went to HacDiskMount step (minute 00:44) I can see something different, in the video the boy just mount sysNAND and ok but in my switch appears a message that tell me "Please select partition table. Primary and backup GPT are both valid but not the same, which one to use?" I don't know which is the correct so I try it with "Primary", then I finish the tutorial and no repaired, then I repeat with "Backup" and same problem.
I try different firmwares (v9 and v6) and same problem.

Now I can't see "Nintendo" logo and it's more difficult to join in RCM mode. What happened? How can repair my Switch?

I have a NAND backup with the initial problem before do all this things.

The chips looks like ok but I thing that I need to try to change it, because it's strange no see the charge icon.

Some ideas?

I appreciate some help.

Regards.

 

First thanks for your answer.

I can't join in recovery mode.

Keep in mind that this backup are just the initial problem data (just "nintendo" logo and power off) then don't solve the problem.

Regards.

 

I restored my (deffective) NAND to begin again to try to repair it.

Now I can see again the "Nintendo" logo and then the console turns off
and continues no showing the left charge icon during charging (but charge).

I don't know if try with other firmware or... what?

As I say the console gets hardware damage (water) but looks like a software issue but who knows.

 

It's reflowed with flux around some corrosive areas (maybe I must to reflow again) and I tried other battery that I can see in Hekate that is charged to 100%. And we are here, with the issue.

I'm waiting to receive in... around 5 days a few of chips to try to change BQ24193 (or M92T36, or PI3USB).

I test your suggested pins (I remember saw this suggestions in other threads and keep in mind to check).

Here the results always with charger plugged:

M92T36:

Switch console OFF:

PIN 5: 4,49v.
PIN 6: 0v.


Switch console ON (in Hekate menu):

PIN 5: 3,29v.
PIN 6: 3,31v.

What do you think? looks like ok. I suppose that 0v. in pin 6 when console is power off it's ok but I don't know.

Thanks for your answer.

Regards.

 

Yes, "Here the results always with charger plugged:"

It's ok?

 

Ok, then I will change M92T36 when arrive it and measure again pin 5 and pin 6 with same measured results in pin 5 and expecting 3-6v in pin 6 with Switch OFF and charger connected.

Thanks for your help.

 

Hello, sorry for the delay.

I'm still waiting for the chips, very slow shipping

When I receive the chips and try to repair the Switch I will write to all of you.

Regards.

— Posts automatically merged - Please don't double post! —

Thanks for the suggestions.

I clean and reflowed corrosion areas and checked all ribbon connectors. Anyway I will try to recheck the corrosion areas and try to reflow some areas again when receive the chips.

Regards.

 

Hello, finally I have good and bad news.

Good news: finally the chips arrived.

Bad news: When I change M92T36 in some moment I move a component near the chip, the component flipped 90 degrees in the same pads, looks like a resistor, then I try to repaired and the component "jump" and I lose it. Now no charging.

I draw an orange arrow showing the component in this picture, The middle component in the group of three,can someone tell me the kind of component, package, etc? I think that is a resistor of 100K with 0402 package, can someone confirm it?



Thanks in advance.

Regards.

 

Thanks for your faster answer.

I measured again the three resistors in other pcb.

From down to up I can measure 10K2, 100K and 100K (last both aligned resistors).

Can someone confirm it?

Regards.

 

Thanks a lot.

Then I order a resistor of 100K with 0201 package.

Maybe I try to solder it a Thru hole 100K resistor, for testing meanwhile i receive the smd resistors.

Regards.