2.26 or 2.4 GHz / White plastic unibody enclosure

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Computer smoke during Keyboard replacement

Computer never has given off smoke before or had any issues.

Today I attempted to change the keyboard and as I went to put all the parts back in place, I connected the battery and soon after saw smoke.

I waited for a few and then did the entire install again thinking that maybe I missed a step.

On the second try when I came to the end and the battery was to be Reconnected my screen didn't turn on. I pluged in the charger since the computer wasn't turning on and I immediately smelled more smoke.

I'd appreciate any help or feedback.

Thank you!

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Sounds like something is shorting to ground. Where is the smoke coming from?

It is common for first time repairers of MacBooks to slightly chip the corner of the LCD cable, so if you have done this, the cable will need to be replaced along with the fuse, the LCD connector and maybe more.

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The logic board was becoming warm and the smoke rose from inbetween the board/fan/battery area. By the end of the cd drive.

LCD cable? I didn't think about that.

But would that be the cause of the computer not turning on at all?


In that case, it wouldn't be the LCD cable. Feel the ICs on the board to see what is getting warm. If something is getting warm/hot, this means either this IC is shorted to ground, or something on this voltage line is shorted.


It gets warm around the track pad/keyboard/battery connect area.

I can tell the battery is working because everytime I connect it to the mother board it warms it. However, my fan and HD are not running as well as no power. Weird though, I connect the charger to the port on the logic board and the connector piece lights up green.


Try powering it on with just the keyboard connected and the charger plugged in. Are you sure you are using an A1342 or A1278 keyboard, and it is definitely not faulty?

If you are sure of this, and it doesn't work with everything disconnected (except the keyboard, fan and charging port), it will be a fault with the logic board.

If you have carried out micro soldering before, grab a schematic and board view for your board number, and measure the main power rails. If you haven't, send it to a good 3rd party repair company, who can carry out logic board repairs.


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