Released June 2012, Model A1278. Intel processor with Turbo Boost, Up to 512 MB DDR5 Video RAM

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Replacement trackpad is laggy

Hi! I purchased my Mac from a fellow friend who needed money. And he gave it to me with a broken trackpad on the top left edge. Coming back to today, I purchased the replacement trackpad and I could and did replace the factory one. Thing is that when installed I proceed to test it, and it's somewhat like laggy from the half to the top of the trackpad itself. (Don't know if I explained myself properly). Plus I couldn't do a drag and drop action using two fingers. What could it be? Installed back the factory one and it works like a charm. Is it the trackpad thats not fully original or is it defective?


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Is the battery swollen?


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Try to swap the ribbon cable from your old trackpad to the the new one. If you have the same problem then the new trackpad is faulty. Ask for a replacement.

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I tried to remove it but it is glued to the trackpad itself so I'm a bit afraid it might ruin.


you may try to heat the cable a little with a hair dryer. If you're afraid of damaging the cable then just contact the seller and ask for a functional trackpad.


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Dennys Ortega will be eternally grateful.
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