MacBook air won’t stay on
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
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