Hardware N3DSxl CPP functionality broken, cant diagnose a fix

[Deleted User]

Hi there,

I've been an idiot in the past, and spilled a drink on my n3ds xl, the system's surprisingly intact, and functions perfectly normally in-game, bar some issues.

Main issues:

• The CPP functionality in games that use it (SSB4, MHGen, MH4u, etc) is disabled, or cant be detected otherwise.
• Something's internally buggered with the CPP, as the home menu is spammed with downwards input (can be worked around by using the touchscreen), though the c-stick can't input any other direction.
  • Despite removing the C-stick from its board, the problem still persists in the system

I've tried replacing both the shoulder button pads, and the CPP itself with replacements, but it's not resolved the issue at all.
I'm thinking it's down to either the board being corroded somewhere, or a logic controller being brokt, but I don't have the tools/understanding to test for that.

Anyone more familiar with the hardware got any idea what else is buggered?

 

[Scarlet]

@gamesquest1 @vb_encryption_vb ?
Just tagging a few people that know about 3DS hardware o/

 

[gamesquest1]

sounds about right, probably got a short somewhere on the board under a chip, have a look on the board and see if there is any areas where the liquid pooled and try cleaning the area with isopropyl alcohol

also have you tried swapping out the normal Cstick for a new one and/or running the circle stick calibration
http://en-americas-support.nintendo.com/app/answers/detail/a_id/52/~/how-to-calibrate-the-circle-pad

 

[Deleted User]

Ok, so this somehow managed to fix itself when I dropped my 3ds off of my desk???

One of the holders for a screw holding the backplate has snapped though, so i guess there's a tradeoff, but eh, what the heck. I'll take shitty superglue vs cleaning the board.