MacBook Pro A1212 overheats when plugged into power

I bought my MacBook Pro model A1212 about 2 months ago and since ive had it i noticed that it gets really hot when plugged into power, sometimes crashes when it gets really hot and occasionally gets thin horizontal lines in the screen (possibly unrelated?)

I have installed smcFanControl to keep it cooler but still sometimes crashes. I have seen the temperature reach up to 70°C on max fan speed a couple of times, so im getting pretty worried i might fry something if i haven't already. Altho on battery it never goes above 45-50°C and i can leave the fans on default speed

I have read that it could be that my heat sink needing new thermal paste, but that wouldnt explain why it doesnt get hot on battery..

Any suggestions?

Отвечено! View the answer У меня та же проблема

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Depending on energy settings (control panel) the computer runs on limited power when unplugged. I'd really recommend giving it a good clean and new thermal paste first. You'll find all instructions on this site (Repair Guides).

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yeah thats what i was thinking, ive had it open before because the keyboard and trackpad stopped working, and its a bit dusty inside it so a good clean and new thermal paste is next on the agenda.

let you know how it goes after that.


+ I agree totally with new thermal paste, I've seen the heat sink vents blocked 80% on this machine and you can't get to it until you pull the heat sink.


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