I have had this type of overheating as well, and my phone works fine. You may want to get yours checked though, because I have a feeling your MB
is burnt. Were you overclocking it?
Hey, current phone is the Nexus 5 - stock, vanilla, clean, unrooted
Hit the thanks button if I helped! Thanks!
HTC Evo 3D - DU 4.2.2, Mirage kernel w/ TWRP