Not sure if anyone has come across this problem but hopefully someone can point me in the right direction.
I’ve got a switch that is good in every aspect apart from the SD card reader. I’ve tried 4 different SD card boards and all fail to read an SD card. The system doesn’t recognise a SD card being inserted and all the reboots and factory resets does solve the problem.
Anyone know which chip on the main board is responsible for handling the SD card?
That’ll be somewhere near it’s connector each major part video charging all have their chips nearby so no doubt it’s one will be nearby just look for a major chip near it then look up it’s code to find out what it does
Are you sure that all the pins inside the connector are there and not missing or bent? I’ve seen several of them that had a problem on the connector itself.
Also, please check if the connector of the SD card slot is properly connected to the mainboard connector. Sometimes it can be a bit tricky to connect. But, I guess you did that right.
Concerning the communication: as far as I know the SD card is directly tied to the SoC.
I haven’t had a chance to have another look at this. Will updated shortly.
turns out the SD socket on the MB was full of junk. I couldn’t see it with the naked eye but found it using the zoom on my phone (too lazy to take it to the microscope).
I washed it out with IPA and a fibre glass brush and its now working.
congratulations on solving that one. sometimes it’s so simple!
I accidentally broke one pin off the mb socket for the SD connector. Any suggestions for DIY repair?