i just recently (last month) repaired my mbp logic board (screen backlight circuit issue). i had very little experience (have never even taken a circuits class)

i just recently (last month) repaired my mbp logic board (screen backlight circuit issue). i had very little experience (have never even taken a circuits class) but i was able to successfully perform the repair (with a little help). the first step is obviously to get a multimeter (which you probably already have). the second and thirds steps are to get the boardview and schematics for your logic board 1. boardviewer http://boardviewer.net/ http://boardviewer.net/ 2. boardview and schematics files https://www.apple-schematic.se/board-ids/ https://www.apple-schematic.se/board-ids/ the boardview shows you all of the traces on the board and the schematics match components with labels on the boardview (resistor/capacitor values and IC numbers). once you have these things you can try to debug your issue. i did this buy watching a lot of louis's videos and googling (my issue happened to be common but yours might be as well). i narrowed my problem down to the brightness step-up circuit by finding a ground fault where the shouldn't have been one. i then ordered replacement capacitors from https://www.mouser.com/ https://www.mouser.com/ (guessing that the dielectric probably broke down on one of them) for all the caps on the circuit an the fuse (values for which i found in the schematics). the hardest part was actually desoldering/soldering existing caps because they're surface mount (as almost all of the components of modern logic boards are). for this you need a "hot air rework station" - quite an expensive tool. luckily i'm still in school and found someone in my ECE department that not only had one but was pretty handy with it. he did the desoldering and then i did the soldering. when the screen lit up both of us were pretty shocked the operation had worked :) anyway i can't give much more advice than this because i got pretty lucky! but there are forums where you can ask questions and people do discuss these things (louis also has a discord https://discord.gg/kPTwD3 https://discord.gg/kPTwD3 where you can get more real time advice from various people). good luck!