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

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Not powering after changing front glass

Hi Everyone,

I recently changed the front glass and track pad on my MacBook Pro 13" mid 2012 (A1278). Now it won't turn on.

Retracing my steps

I used a heat gun to loosen the shattered glass and removed it.

I cleaned the glued area with a micro fiber cloth and a compressed air can and mounted the new glass.

when I tried to power it up and nothing happened. I plugged the power in and again no power. I noticed that the green light on the power plug can on for about 40 seconds and then it dimmed. I then tried a fully charged battery from my other MacBook and still no power.

I'm not sure what happened or how to figure this out. Can anyone help me with this?

Thank you


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1 Answer

Chosen Solution

I doubt there are any problems with the glass replacement. In my opinion I would look at the trackpad replacement procedure. My first guess is an incomplete cable insertion from the keyboard. I use a piece of tape on the cable to help pull it into the the slot rather than trying to push it in. Would you tell us why you replaced the trackpad?

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