已解决： Card reader not recognized on system report following teardown - iMac Intel 21.5"

Card reader not recognized on system report following teardown

When reconnecting the cable for the card reader next to the ODD fan I initially put it in the wrong way round. I think this may have damaged or squished the pins on the motherboard. I subsequently connected it the right way round but now the card reader is not found.

Is it worth trying to realign the pins or can I consider it failed permanently. Unless it is trivial to realign the pins of these connectors, it's not worth opening up the unit again as I don't use the card reader that often and there's numerous alternatives (usb/device, etc)

Is it easy to realign the pins on the logic board connector?

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发帖于: 2017年7月10日

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It completely depends on how much damage has been caused to the socket. How much force was put on the cable when it was being inserted the wrong way around?

If it was very light force and the cable wasn't pushed in really hard, then it may just need one or two pins slightly moving. But if all the pins are bent, or if a pin is broken, then it'll require a replacement socket, which would require component level soldering.

It could also be the cable that is damaged. As it is only designed to go in one way, the slots for the pins are slightly to one side on the socket, so basically, the blank section was being pushed against delicate pins when being inserted the wrong way.

If you dont fancy taking a closer look to inspect the damage, its a complete unknown unfortunately. But if its not even being seen in the system profiler (system information in later OS versions), then its likely multiple pins not making contact.

I hope this helps.

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iMac Intel 21.5"

Card reader not recognized on system report following teardown

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