Power Connector Doesn't work

This is an old laptop I managed to fix up, but it was in a barn during winter and spring seasons for about 2 years I think. Everything worked fine after setting aside near some strong air, but the power port has difficulty with the charger. If I simply connect the charger, it may work on a rare occasion, but normally I have to turn or flip the cable so the laptop can start charging. I tried a different newer charger and it seemed to work for a day, but the same issue poped up. I then tried replacing the power port, but it didn't work with a similiar model one and a newer model one that also fit. Should I simply get a new motherboard and reconnect everything or just leave it be and get a new laptop entirely?