Macbook 12" The sensor is inside the keyboard. Depending on the production year in different places!
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Model 2015 has the sensor close to the LEFT SHIFT BUTTON.
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Model 2016/2017 has 2 sensors, one close to LEFT SHIFT BUTTON and one close to the RIGHT SHIFT BUTTON.
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* Model 2015 has the sensor close to the LEFT SHIFT BUTTON.
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* Model 2016/2017 has 2 sensors, one close to LEFT SHIFT BUTTON and one close to the RIGHT SHIFT BUTTON.
I have figured that out, because I've replaced my keyboard on my Macbook 2015 model with the wrong keyboard (for model 2016/2017) and I had some problems: if I close the lid, the screen doesn't go off, nor closes my session; second, the keyboard from 2016/2017 mounted in the 2015 model fits perfect, but when I log into my session, somehow, the SHIFT, CONTROL and OPTION buttons are "pressed down virtually"; so I have to either press all 3 buttons down so they will behave as "they are not pressed/held down". If I don't do that, the touchpad is also affected (the single tap acts like right-click).
Yes, a very weird situation -> Apple thought about that, so it would be very hard to swap between different models.
Macbook 12" - 2015: The sensor is inside the keyboard. Depending on the production year: Model 2015 has the sensor close to the LEFT SHIFT BUTTON. Model 2016/2017 has 2 sensors, one close to LEFT SHIFT BUTTON and one close to the RIGHT SHIFT BUTTON. I have figured that out, because I've replaced my keyboard on my Macbook 2015 model with the wrong keyboard (for model 2016/2017) and I had some problems: if I close the lid, the screen doesn't go off, nor closes my session; second, the keyboard from 2016/2017 mounted in the 2015 model fits perfect, but when I log into my session, somehow, the SHIFT, CONTROL and OPTION buttons are "pressed down virtually"; so I have to either press all 3 buttons down so they will behave as "they are not pressed/held down". If I don't do that, the touchpad is also affected (the single tap acts like right-click). Yes, a very weird situation -> Apple thought about that, so it would be very hard to swap between different models.
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Macbook 12" The sensor is inside the keyboard. Depending on the production year in different places!
+
+
Model 2015 has the sensor close to the LEFT SHIFT BUTTON.
+
+
Model 2016/2017 has 2 sensors, one close to LEFT SHIFT BUTTON and one close to the RIGHT SHIFT BUTTON.
+
+
I have figured that out, because I've replaced my keyboard on my Macbook 2015 model with the wrong keyboard (for model 2016/2017) and I had some problems: if I close the lid, the screen doesn't go off, nor closes my session; second, the keyboard from 2016/2017 mounted in the 2015 model fits perfect, but when I log into my session, somehow, the SHIFT, CONTROL and OPTION buttons are "pressed down virtually"; so I have to either press all 3 buttons down so they will behave as "they are not pressed/held down". If I don't do that, the touchpad is also affected (the single tap acts like right-click).
+
+
Yes, a very weird situation -> Apple thought about that, so it would be very hard to swap between different models.
Macbook 12" - 2015: The sensor is inside the keyboard. Depending on the production year: Model 2015 has the sensor close to the LEFT SHIFT BUTTON. Model 2016/2017 has 2 sensors, one close to LEFT SHIFT BUTTON and one close to the RIGHT SHIFT BUTTON. I have figured that out, because I've replaced my keyboard on my Macbook 2015 model with the wrong keyboard (for model 2016/2017) and I had some problems: if I close the lid, the screen doesn't go off, nor closes my session; second, the keyboard from 2016/2017 mounted in the 2015 model fits perfect, but when I log into my session, somehow, the SHIFT, CONTROL and OPTION buttons are "pressed down virtually"; so I have to either press all 3 buttons down so they will behave as "they are not pressed/held down". If I don't do that, the touchpad is also affected (the single tap acts like right-click). Yes, a very weird situation -> Apple thought about that, so it would be very hard to swap between different models.