Chosen Solution
Hello, I bought a faulty Macbook Pro A1708 - 2017 Function Keys model with the issue being the backlight not functioning for the display. I have a limited knowledge on circuit boards and wondering if anyone could shed some info on what I should be looking out for in terms of measuring voltage, resistance etc for the components and the necessary steps to check if all is working. I have the circuit diagrams and boardview to assist. I have images below showing the damage on the board: Underside of the Logic Board:
Topside of the Logic Board:
Thanks in advance!
Well, you do need to do some deeper cleaning as the green corrosion and white staining. Carefully use a soft toothbrush to scrub down the areas that you’ve noted. As well as dust off the board. Make a paste of equal quantities of cream of tartar and baking soda to clean the green cupric chloride off the logic board. Make sure to fully rinse the area with distilled water and then again with 85% isopropyl alcohol to help remove the water (drier) I would recommend you spend one time reviewing Louis Rossmann’s video’s he can better answer your circuit questions.
