The laptop has a burning smell after it’s been running for a while. I opened the case and examined the motherboard for anything that looks off. Could anyone tell me what the marked item in the picture is ?
Any suggestions on what to do about it would be appreciated as well.
Thanks in advance!
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That’s just a plastic pin for positioning the connector before soldering it to the board, nothing that could prevent or influence your Mac functioning. Looks like the plastic got melted, probably that board has already been previously repaired as it looks the nearest port has some solder blobs that do not look like machine done. You’ll have to look somewhere else for burnt components, of course on board flip side too.
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These are metal pins which are part of the ports metal shell. They are often press fitted to offer stability of the connector and the forces applied. It looks like when it was damaged during manufacturing (fractured).
Are you encountering any other issues with your system?
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Thanks for the info. The laptop runs fine but the burning smell bothers me.
At this point I think you'll need to take the logic board fully out to check the other side and make sure nothing is melted on the heatsink.
Here's the guide MacBook Pro 13" Unibody Mid 2012 Logic Board Replacement
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Move your palm over the surface and see if you can detect a hot spot. Feel the case first before you open it.
by mayer