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updated mbp repair post with pictures
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Cubie87 committed Feb 14, 2024
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19 changes: 18 additions & 1 deletion posts/2024-a1708/repair.md
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Expand Up @@ -84,11 +84,28 @@ I re-assembled the whole machine and wiped it (as requested from the seller).

Most of the resources utilised to action this repair is by Louis Rossmann. A very similar diagnosis process is covered [here](https://www.youtube.com/watch?v=S8rdaJQQVqg). You might recognise the "owie!" test in that video, was the main inspiration for my own "owie!" test.


## Photos

Here's a photoshoot of the repaired system.


![c7050 solder pads](solder1.png)

![c6465 solder pads](solder2.png)

![c6445 solder pads](solder3.png)

![whole system overview](solderspots.png)

Note the locations that were soldered.


## Dead USB Controller

While I was previously probing around on the board, trying to establish if `PP3V3_G3H` was present (the precursor voltage bus to `PPBUS_G3H`), I found that one of the USB controllers was boot looping at the voltage level. Now that the laptop is fixed, I can indeed confirm that the USB controller closer to the hinge is dead and cannot charge the laptop.


## Stability Testing

Considering I just ripped off two capacitors (C6465 cause it was dead, and C7050 cause I killed it while de-soldering), it would be prudent to test the stability of the voltage bus. This is ongoing as I write this.
Considering I just ripped off two capacitors (C6465 cause it was dead, and C7050 cause I killed it while de-soldering), it would be prudent to test the stability of the voltage bus. This is ongoing as I write this.
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