Hardware

power in apple laptops at the mother board aka logic board

from:http://www.insidemylaptop.com/turn-on-macbook-pro-...

Turning on MacBook Pro without power button

posted in: Apple Products | 124

Sometimes, when you troubleshoot a MacBook, MacBook Pro or MacBook Air problem you need to turn it on without using the power button. Is it possible? Yes, it is!

In these laptops (unibody style) the power button is permanently attached to the keyboard. Basically, it’s a part of the keyboard as you can see on the following picture.

Macbook Pro power button

If the keyboard failed (let’s say you spilled liquid on it



) and the power button stopped working there is a workaround for turning it on.

You cannot use this method to turn on your MBP on a daily basis but it is a good troubleshooting technique. It might help to figure our if the motherboard still works even though the computer doesn’t turn on when you push on the power button.

You can turn it on by shorting the power-on pads with a small flathead screwdriver for a couple of seconds. The power-on pads located on the motherboard. In order to access them you’ll have to remove the bottom cover and it’s very easy.

NOTE: shorting the power-on pads might not work if the keyboard still connected to the motherboard. If it doesn’t work, unplug the keyboard cable from the motherboard and try again. Sometimes it takes a few attempts to make it work.

In this post I’ll show you how to locate the power-on pads on different Apple laptops. The location depends on the model (year).

You can find the model using the serial number. Locate the serial number printed on the bottom cover and enter it in the search tech specs box (click on Browse by Product button first).

I’ll be adding more pictures as I get access to other models.

MacBook (13-inch, Late 2008)

MacBook Pro 13-inch Late 2008 motherboard

In this model the power-on pads look like two solder terminals and located right above the touchpad cable.

MacBook Pro 13-inch Late 2008 power-on pads

MacBook (13-inch, Late 2009)

MacBook 13-inch Late 2009 motherboard

In this model the power-on pads located above the left side of the keyboard connector.

MacBook 13-inch Late 2009 power-on pads

MacBook (13-inch, Mid 2010)

MacBook 13-inch Mid 2010 motherboard

The power-on pads located right above the left side of the keyboard connector on the motherboard.

Two square terminals positioned vertically.

MacBook 13-inch Mid 2010 power-on pads

MacBook Air (11-inch, Late 2010)

MacBook Air 11-inch Late 2010 motherboard

In this MacBook Air the power-on pads located right above the keyboard connector.

MacBook Air 11-inch Late 2010 power-on pads

MacBook Air (13-inch, Mid 2011)

MacBook Air 13-inch Mid 2011 motherboard

In this MBA the power-on pads located just above the right side of the keyboard connector.

MacBook Air 13-inch Mid 2011 power-on pads

MacBook Air (13-inch, Mid 2012)

MacBook Air 13-inch Mid 2012 motherboard

In this MBA 13-inch the power-on pads located right above the keyboard connector.

MacBook Air 13-inch Mid 2012 power-on pads

MacBook Pro (13-inch, Mid 2009)

MacBook Pro 13-inch Mid 2009 motherboard

In this MBP the power-on pads located between the trackpad connector and hard drive connector.

On the following picture I disconnected the hard drive cable so you can see the power-on pads better.

You still should be able to short them with a small flathead screwdriver even without disconnecting the cable.

MacBook Pro 13-inch Mid 2009 power-on pads

I guess that MBP (13-inch, Mid 2009) have two different logic boards. They are similar but power-on pads located in a different spot.

Take a look at the following two pictures.

MacBook Pro (13-inch Mid 2009) motherboard

The power-on pads located on the right side from the hard drive cable.

On the following picture the hard drive cable disconnected so you can see the pads.

MacBook Pro (13-inch Mid 2009) power-on pads

MacBook Pro (13-inch, Mid 2010)

MacBook Pro 13-inch Mid 2010 motherboard

In this model the power-on pads look like two silver squares and located above the keyboard connector on the left side from the square chip.

MacBook Pro 13-inch Mid 2010 power-on pads

MacBook Pro (13-inch, Early-Late 2011)

MacBook Pro 13-inch Early-Late 2011 motherboard

In this model the power-on pads located on the upper side of the motherboard, on the right side from the screw mounting hole.

MacBook Pro 13-inch Early-Late 2011 power-on pads

MacBook Pro (13-inch, Mid 2012)

MacBook Pro 13-inch Mid 2012 pads

Here’s a shot of the MacBook Pro 13″ Mid 2012 logic board power on pads. These pads are located to the left of the memory slots and above a silk screened “HF/e1″ on the logic board. The power-on pads are shiny, silver, square, and larger than the other (mostly round) silver pads nearby.

MacBook Pro (15-inch, Late 2008)

MacBook Pro 15-inch Late 2008 motherboard

This MBP has power-on pads located on the left side of the motherboard, right above the optical drive cable connector.

They look like two square solder terminals positioned vertically.

MacBook Pro 15-inch Late 2008 power-on pads

MacBook Pro (15-inch, Mid 2009)

MacBook Pro 15-inch Mid 2009 motherboard

This motherboard DOESN’T HAVE the power-on pads.

In order to turn on the laptop you’ll have to short the 5th pin from the left side of the keyboard connector to the ground (a metal stud on the motherboard).

Be careful! Do not short other pins.

MacBook Pro 15-inch Mid 2010

MacBook Pro (15-inch, 2,53GHZ, Mid 2009)

MacBook Pro 15-inch 2.53GHz Mid 2009 motherboard

In this model the power-on pads located on the lower part of the motherboard.

MacBook Pro 15-inch 2.53GHz Mid 2009 power-on pads

MacBook Pro (15-inch, Mid 2010)

MacBook Pro 15-inch Mid 2010 motherboard

In this model the power-on pads located right above the keyboard/trackpad connector shield.

MacBook Pro 15 inch Mid 2010 power-on pads

Here’s a close-up picture with the keyboard/trackpad connector shield removed.

The power-on pads look like two solder terminals and located above the trackpad connector.

MacBook Pro 15-inch Mid 2010 closeup

MacBook Pro (15-inch, Early-Late 2011)

MacBook Pro 15-inch Early-Late 2011 motherboard

In this model the power-on pads also located right above the keyboard/trackpad connector shield but positioned vertically.

MacBook Pro 15-inch Early-Late 2011 power-on pads

The pads look like two square solder terminals and located above the keyboard connector.

MacBook Pro 15-inch Early-Late 2011 closeup

MacBook Pro (Retina, 15-inch, Mid 2012) and MacBook Pro (Retina, 15-inch, Early 2013)

On this motherboard the pads located on the left side for the AirPort board.

MBP-15-Retina-2012-2013-motherboard

Here’s a close up picture.

MBP-15-Retina-Mid-2012-Early-2013-power-on-pads

MacBook Pro (17-inch, Early-Mid 2009)

MacBook Pro 17-inch Mid 2009 motherboard

In this model the power-on pads located on the left side from the memory slot and marked R5015.

MacBook Pro 17-inch Mid 2009 power-on pads

MacBook Pro (17-inch, Mid 2010)

MacBook Pro 17-inch Mid 2010 motherboard

On this logic board the pads located in the lower left corner, on the right side to the mounting screw.

MacBook Pro 17-inch Mid 2010 power-on pads

MacBook Pro (17-inch, Early-Late 2011)

MBP 17

On this motherboard the power-on pads located horizontally, on the left side from the square SMC chip (the larges square chip on the picture).

MBP 17

RELATED POST:

If your keyboard failed you’ll have to replace it with a new one. Here’s how to replace keyboard on a MacBook Pro 13″, 15″ and 17″ unibody laptops.


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