Came in, no power, liquid damage. Ultrasonic cleaning allowed me to power on and boot very very slowly. Keyboard back light area looked a bit rusty but was functioning I removed funky looking caps just to clean up and re-solder, continued working but computers very slow, I imagine it’s a sensor issue and maybe I’m struggling to determine which sensor it is and where to check, I believe I have checked the areas that I can gather are sensor related but to no avail. I have backed up the data successfully, I am not able to boot to an external drive the screen just goes black, same thing for recovery or anything else other than holding down the option key or successfully booting very slowly to the internal drive normally. The computer visibly appears to be doing the proper stuff to go into the DFU mode but is not recognized an Apple configurator 2.