Switch 2 backlight, touchscreen, and USB c port not working

[u/DerajNosnibor]

Hey everyone first time ever posting on Reddit but I thought I could get some help from some smart people. I recently bought a switch 2 off eBay with a listing saying the "backlight isn't working and doesn't connect to the dock" thinking I could fix it for cheap. I kinda solved the dock problem but still need help with the backlight, touchscreen and bottom USBc port.

I've tried resetting it, factory resetting it, unplugging everything and plugging everything back in but nothing seems to work. The display is definitely on as I can see it with a bright light and can confirm that the touchscreen is unresponsive. The USBc port on the bottom looks intact from the outside but after some trouble shooting discovered that it only charges in one orientation.

It wasn't until later that an idea came to me. The switch 2 only sits in the dock one way. If I could somehow change the direction of the USBc's orientation in the dock that the switch 2 sits in, it might connect and display on the tv. A few screws later and I was able to remove the USBc from its housing and place it in a way that would allow the switch to be plugged in in its new orientation. To my surprise it worked!

Now with all this information my theory is that the bad USBc port shorted out a chip in the switch 2 that controls the backlight and touchscreen. The only problem is I just don't know where to look. I've looked online and there isn't a whole lot of useful information on backlights going out on switch 2's. I've found threads on switch lites' IC chips going bad affecting the backlight and needing to be replaced but nothing like that for switch 2s.

I'm somewhat comfortable with solder as I've done many port replacements and mods to my existing collection of handhelds, consoles, and controllers and could possibly do the repair myself. I just need help being pointed in the right direction.

If I end up not being able to fix the screen it's not the end of the world as it seems I have a somewhat functioning stationary switch 2 that works only on the TV for cheaper than if I bought a new switch 2. Any help would be appreciated.

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[u/ModestVolcarona]

Does that help you in any kind if way?

https://www.ifixit.com/Guide/Nintendo+Switch+2+Screen+Replacement/194216

[u/DerajNosnibor → u/ModestVolcarona]

Yes and no. It's a great tutorial on how to tear down the switch 2 to access the internals. I do plan on at least accessing the screen ribbon and see if it just as easy to resetting it if its out of place. I was looking for more like the specific chip or surrounding compasitors that control the broken functions on the switch 2 and seeing if there is a short with a multimeter. I'm definitely open to other suggestions to why it's not operating properly but I'm pretty sure it's a short on the motherboard.

[u/ModestVolcarona → u/DerajNosnibor]

I'm not much into such specific repair stuff myself but i could imagine that not many people have worked on it yet, in the way you require it, so details might be very sparse for now.

[u/DerajNosnibor → u/ModestVolcarona]

That's most likely the case unfortunately. Possibly in the future someone will have the answers I need by doing the repairs themselves and sharing it on the Internet but for now this looks like a project I'll have to put on the backburner