Fan spins at maximum speed by turning MacBook on, then shuts down
I have a problem with a Macbook Pro Mid-2012 (A1278). When I turn it on, the fan immediately starts spinning at maximum speed. When it gets to the login screen, I log in, and after two seconds of loading it shuts down. I've already tried to reset SMC and PRAM, but that didn't help.
My guess would be that it is a thermal sensor not working properly? Does anyone know were the thermal sensor is located? Or any other ideas?
Thanks a lot for your help so far.
I did a quick inspection on the pins and also the logic board, from what I can see and judge, it doesn't look too bad.
Here are some photos:
I will try to also find someone with the same charger. Although the charger seems to be in quite ok condition and I think is replaced at some point. The only thing I can see is that the chord is slightly squeezed at the top, but I don't think enough to not make it work properly.
Esta é uma boa pergunta?