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MacBook Pro 13" Unibody Mid 2010 Dual Core 2 2.4GHz In order to change a broken glass, I opened the case according to the guide here. (Thank you) After I reassembled, I noticed the computer was running very slow and the fan was on all the time. However I can login and all my applications do work (though responsiveness is very poor). At first I thought it had something to do with the clock and certificate verification (since I disconnected the battery), but after setting it correctly and rebooting, the problem didn’t go away. I don’t think the wireless was able to connect to my hot spot at home, but that might just be another symptom. I verified the disk using the Disk Utility from Finder, but that didn’t reveal any problems. So I’m currently running the AHT and still waiting for that to finish (with extended tests). After 50 minutes it was approx 1/3 done, so I cancelled and ran the shorter test. It reported error: 4SNS/1/c0000008:TSOP–124 (Heat Sink, thermal sensor) What can be done? (I can’t believe it’s failed because it was working fine before I disassembled.) Cheers, Nap
Doesn’t sound good ;-{ Did you drop or bang your system? Often other things can get messed up when your drop or bang your system. At this point I would run HD diags. Vs AHT and I would run a Fan & Temp monitoring app like: Temperature Gauge Pro to see a little deeper into what was overheating and how the fan looks. My guess here is the HD took the fall/bang badly and is causing your problems. To prove this you could try running your system on an external HD (booting it off a fresh system). Does the responsiveness come back? And does the system run cooler? If it does I would first try backing up anything of importance from the HD and then running Disk Utility run the repair options on your drive. If it fails its time for a new HD.
Replace this part: MacBook Pro 13" Unibody (Mid 2009-Mid 2010) Hard Drive Cable
The same problem happen to me on my macbook pro 15" I put some diamond cpu compound on CPU and GPU. After I reassembled turn on fans full speed, slow process. Reading forums thermal sensor cpu got damage i was worried, then someone advise check every screw, few of them were loose, . fix the problem for me. Now Temp does not go over 60c viewing 1080p video =) with 4000 rpm fan speed. Check wireless cables, on my case one was loosed.
