What causes the Nintendo Switch Card Reader fault?
The main reason we see Nintendo Switch with card reader faults coming in are caused by accidental damage. If a Game Card or SD card isn't inserted perfectly straight it can dislodge the pins that make contact with the card.
The headphone socket is on the same internal assembly so if your console isn't working with headphones, this repair will cure that fault too.
How do we repair the Nintendo Switch Card Reader?
The first thing we do before any repair is test the console to confirm the fault. We clean out any dust as we go. We then proceed to open the Nintendo Switch to gain access to the internals.
We inspect the internal parts to see where the fault lies. Any faulty parts are replaced and tested out. We will test the Nintendo Switch a number of times on our testing bench prior to releasing it for dispatch.