crwdns2934241:0crwdne2934241:0 Reece
crwdns2934249:0crwdne2934249:0:
Sounds like liquid damage. Remove the logic board and clean it if there is any green/blue corrosion. Check the battery PCB for liquid too. If this sounds out of your depth, would recommend using a good 3rd party repair centre (a lot cheaper, and can repair the logic board instead of replacing). Don't have any idea of cost with Apple, but @mayer should have an idea :)
crwdns2915684:0crwdne2915684:0:
open