I just replace the dead GPU Card on an Imac 21.5 Mid 2011,
Got 2x2Gb 1333 sodim in the top of slot.
When i finish the repair, the mac start normally but except the right memory slot ,When looking at the front of the Imac , (The top and bottom Right Slot memory ) (Dimm Ch B )
I search on the net and found that i properly knocked the motherboard when I put it back in.
I think the power Filter, behind the motherboard ,is what cause that.(Because when you fight to put back cable behind the motherboard)
You need to mention that, next time.
I’m not sure about that but I think the part C3230. (I do not disasembly it again to verify (It’s so Fragile)
Can someone confirm that,( And what do i need to do to repair it.??
Or Do someone have the same problem, (Right slot (Top & Bottom ) Not working.??
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