Hello, first of all I apologize if there is any writing error, English is not my native language.
I recently purchased a used Wii U, but the former owner didn’t inform me that he had a problem reading the SD card. The console recognizes that there is a card in the slot but it gave me a reading error, something like “impossible to read the card”.
After several researches and discussions in some forums, I was told that it could be a defective SD reader, with some oxidized or bent pins. I bought a spare part from China and a professional from my city made the replacement. It turns out that the console presented the same problem.
I sent it to a famous store in São Paulo, and there they told me that this error could be related to a NAND fault (a defective chip or a damaged weld).
What do you think? Does it make sense that the problem is related to NAND?