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So i replaced my macbook pro keyboard and now my fans are running high, the new keyboard and original trackpad aren’t working, and my screen shows little dots flashing randomly. Click here to see The YouTube video of the screen. It would be helpful if anyone knew where i could find a diagram of the connectors, so I could know if I somehow broke or damaged the connectors in the process? Any ideas on why my fans are running at max now? I can use an external keyboard and mouse just fine.
So I hate to admit it but I made a newbie mistake of not connecting the trackpad connector (it was hiding under the logic board when I was putting everything back together). Seems as though this one error caused all the problems, once I connected it everything is running beautifully again, including the screen! Big thanks to both of you for helping me with finding the post with pictures of all connectors and also with recognizing that the fan on max was a result of the trackpad issue.
You probably cut the trackpad cable slightly when removing the battery to access the keyboard, which is easy to do. This will cause the trackpad to not work and high fan spin (since there is a sensor in the trackpad). With the keyboard, did you test the keyboard before fitting it? It could be faulty. Also check the keyboard cable since a lot of people damage this when trying to plug it in, since there is not a lot of space to insert the cable in the connector. I have heard some people mention the keyboard not working if the trackpad has an issue, but I have only seen this happen on the 2015 models, not earlier. This could be the case with your one however, so sort out the trackpad issue first and then check it out. With the screen issue, take a video and upload it to the question so we can see this for ourselves and advise.
Did you review the IFIXIT guides? Here’s one that gets into all of the connections to the logic board: MacBook Pro 15" Retina Display Late 2013 Logic Board Replacement As to your problem it sounds like you have a liquid damaged logic board. Is that why you replace the keyboard?
