Chosen Solution
So my girlfriend has a macbook air that hasn’t worked in a couple years, initially it would start up maybe 1/5 attempts, and during that start up I would hear the chime and see the display briefly, then it would abruptly shut off. on top of the battery port looking kind of corroded, it screamed damaged I/O board. I replaced that, and after a few minutes of letting it charge the laptop started! but only stayed on for about 5 minutes and the fan sounded horrible and felt warm to the touch. it will start back up after being off for a few minutes but will only stay on for 5 minutes at a time. should I be patient and let it charge to 100%, or is there another route I should be taking? any help is very appreciated, thanks in advance
Have you tried disconnecting the battery and just using the MagSafe charger to see if the system will run that way?
