Chosen Solution
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?
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).
