@barylak "one closest to the hinge" means it would be the secondary port (rear left). Both ports have their own controller and it is easily possible that you are having issues with one of them. Here is the location for the one that would control that port.
[image|3625140]
You got a multimeter? Post some really good pictures of your logic board with your Question. The controller is on the bottom side of the logic board. Let's see if we can make out things that may be the issue here.
[guide|21499]
=== Update (04/22/25) ===
@barylak the other controller IC is on the top side of the board.
[image|3625260]
It is marked in orange and was identified by the iFixit team as "Texas Instruments CD3217B12 and TPS51980B (likely power controllers)"
Here are the locations for the primary and secondary USB controller IC's
[image|3625388]
[image|3625392]
and here is the schematic for both of those as well
[image|3625389]
[image|3625390]
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=== Update (04/25/25) ===
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@barylak check the fuses F3001 and F3000 for continuity. After that you will have to check those for power as well. I've marked the points where to check with red arrows. Expectation here would be no less than at least 12VDC. Of course only do this if you are comfortable measuring these. If you have any doubts, farm it out and let somebody else fix it :-)
@barylak "one closest to the hinge" means it would be the secondary port (rear left). Both ports have their own controller and it is easily possible that you are having issues with one of them. Here is the location for the one that would control that port.
[image|3625140]
You got a multimeter? Post some really good pictures of your logic board with your Question. The controller is on the bottom side of the logic board. Let's see if we can make out things that may be the issue here.
[guide|21499]
+
+
=== Update (04/22/25) ===
+
+
@barylak the other controller IC is on the top side of the board.
+
+
[image|3625260]
+
+
It is marked in orange and was identified by the iFixit team as "Texas Instruments CD3217B12 and TPS51980B (likely power controllers)"
+
+
Here are the locations for the primary and secondary USB controller IC's
+
+
[image|3625388]
+
+
[image|3625392]
+
+
and here is the schematic for both of those as well
@barylak "one closest to the hinge" means it would be the secondary port (rear left). Both ports have their own controller and it is easily possible that you are having issues with one of them. Here is the location for the one that would control that port.
[image|3625140]
You got a multimeter? Post some really good pictures of your logic board with your Question. The controller is on the bottom side of the logic board. Let's see if we can make out things that may be the issue here.
[guide|21499]