no sound n3ds (non-XL). Help please

I have a new Nintendo 3DS (non-XL version) and I am having some sound issues. Sound works perfect with headphones, and the volume button does work. When headphones are not inserted I get no sound from the speakers. If I open the camera and take a picture, it makes no sound when taking a picture. I am comfortable opening the unit up and when I did so the water indicators had been tripped. I did not remove/inspect the underside of the motherboard as it seemed like a lot of work when I don't know what I am looking for.

Does anyone have any schematics of the external sound system of the n3ds (non-XL)? I'd like to debug this and fix it but not exactly sure where to start. Any tips would be greatly appreciated. Thanks!

 

does this not exist?

 

Thanks for the replies. No it wasn't hacked when I got it, however it is hacked now. I did already take it half way apart and cleaned off all corrosion and discoloration I saw with a brush and ISP alcohol. I have to say I am a little surprised that the speakers would just die. I know the sound system is in tact because the headphones worked. I would have expected some distorted sound or something from bad speakers. Well I guess I will go the replacement route. thanks

 

I feel if it was related to the headphone port then i would still get camera shutter sound when I take a picture. I get no sound out of speakers taking a picture. I was thinking that perhaps one of the lines to the speakers was being shorted to ground by water damage corrosion and if I just cleaned it off then it would work again. My fear here is taking the entire mother board and exposing the top electronics is kinda scary. I exposed one side of the mottherboard which involved removing 4 flex wires but going further looks like a whole lot more. If I know what the sound circuit looked like I would feel more comfortable tracing it, however right now I am kinda blind as to what is what.