My switch has no audio. Possibly due to water damage.

Hi,

As you know liquids and electronics and electricity are not a good mix.

The liquid causes corrosion and provides circuit paths for the electricity which were not in the console's operating design and could damage the components. The corrosion process starts immediately and continues until it has been cleaned properly

The water may have damaged the audio controller or some other parts of the console.

First do not turn on your console and then you need to remove the battery as soon as possible from the console to minimize further damage.''

Then you need to dis-assemble the rest of the console and clean all the affected parts using Isopropyl Alcohol 90%+ to remove all traces of corrosion and water. Do not use "rubbing alcohol" as in some cases this is only 70% or less, can contain scents and is not as effective. If you do check the label to verify the amount of IPA

Here is a link that in general, describes the process.

Electronics Water Damage

As always with electronics, especially surface mounted PCBs be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board.

Once you have properly cleaned and dried the console you can inspect it more closely to check for any obvious damage to the components.

Here is a link to the ifixit Nintendo Switch repair guides which may be of some help.

If this process seems too daunting, take your console to a reputable, professional electronics repair service experienced in water damage repair and ask for a quote for a repair.

If you decide to do this, do it sooner than later.