My Ender 3S1Plus has stopped reading any SD input cards. Any help would be EXTREMELY welcome!
Hello Bob, and welcome to the Forum.
I’m sure you’ll have tried all these things.
First, examine the SD card and look for any visual damage like a contact lifted from the case or a small crack. If all is in order, wipe off the contacts with a clean cloth. Failing that, try and reformat the SD card. You’ll lose any saved data. Check the connections - they do sometimes come loose. Give the SD slot a blow. It may remove a tiny bit of dirt.
If your Ender isn’t reading ANY cards, then I suspect you may have a faulty card reader.