Nintendo switch, audio jack not working

[Pickanick]

Hi all!
Im working on a Switch but im stuck at this (simple?) problem…
The audio jack is not working correctly, when i insert the headphone the audio continue to exit from the console, and the little audio icon remains on speaker mode.
I exluded a motherboard issue using another know good cartridge/jack doughterboard, and it seems all good and working.
I tried soldering a new connector jack with no results.
I desolder the little smd and, from left to right, they measure 0,9 / 0,9 / OL / 0,9 / 0,9 / 1,135Mohm, compared with the working one these values seems correct.
Im thinking the problem is hideing on this doughterboard, but i cant find it…
Can someone help me, please?

 

[thesjaakspoiler]

Afaik, the switch uses a mechanical switch in the headphone jack to detect whether a headphone is inserted or not.
My guess is that somehow that signal is not reaching the connector on the motherboard.
With a multimeter you should be able to trace the signal.
Maybe also check if the daughterboard connector if doesn't have any missing/bent pins.

 

[Pickanick]

With a multimeter you should be able to trace the signal.

my multimeter gave me a false positive on one of the two pins missing from the jack to the doughterboard connector...
after a couple of jumper wires, now the audio behave like it should!