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Current version by: Ron Davis

Text:

-Make sure you have the right power supply. The MacBook Pro uses 85W power adapters. The MacBook and MacBook Air use 60W power adapters. That's why my MacBook Pro didn't start.
+Make sure you have the right power supply. The MacBook Pro uses 85W power adapters. The MacBook and MacBook Air use 60W power adapters. I had a 60W adapter. That's why my MacBook Pro didn't start.
-You can find the wattage by looking at the power adapter. I figured it out by multiplying the voltage with the current, like this:
+You can find the wattage listed on the power adapter. If the wattage marking has worn off, you can figure it out by multiplying the voltage by the amperage, like this:
-V = 16,5V
+V = 16.5V
-A = 3,65
+A = 3.65
-16,5 x 3,65 = 60,225W
+16.5 x 3.65 = 60.225W
So, it was a 60W adapter I was using, which was the wrong type of adapter.

Status:

open

Edit by: Ron Davis

Text:

Make sure you have the right power supply. The MacBook Pro uses 85W power adapters. The MacBook and MacBook Air use 60W power adapters. That's why my MacBook Pro didn't start.
You can find the wattage by looking at the power adapter. I figured it out by multiplying the voltage with the current, like this:
V = 16,5V
A = 3,65
-16,5 x 3,65 = 60,225W So it was a 60W adapter I was using, which was the wrong type of adapter.
+16,5 x 3,65 = 60,225W
+
+So, it was a 60W adapter I was using, which was the wrong type of adapter.

Status:

open

Edit by: Ron Davis

Text:

Make sure you have the right power supply. The MacBook Pro uses 85W power adapters. The MacBook and MacBook Air use 60W power adapters. That's why my MacBook Pro didn't start.
-You can find the wattage by looking at the power adapter. I figured it out by multiplying the voltage with the current, like this for example:
+You can find the wattage by looking at the power adapter. I figured it out by multiplying the voltage with the current, like this:
V = 16,5V
A = 3,65
16,5 x 3,65 = 60,225W So it was a 60W adapter I was using, which was the wrong type of adapter.

Status:

open

Edit by: Ron Davis

Text:

-Make sure you have the right power supply. MacBook Pro's uses 85W power adapters.
+Make sure you have the right power supply. The MacBook Pro uses 85W power adapters. The MacBook and MacBook Air use 60W power adapters. That's why my MacBook Pro didn't start.
-MacBook and MacBook Air uses 60W power adapters. That's why my MacBook Pro didn't start.
-
-You can find it out by looking at the power adapter.
-
-I figuered it out by multiply the voltage with the current, like this for example:
+You can find the wattage by looking at the power adapter. I figured it out by multiplying the voltage with the current, like this for example:
V = 16,5V
A = 3,65
-16,5 x 3,65 = 60,225W so it's was a 60W adapter I was using.
-
-Which was the wrong type of adapter.
+16,5 x 3,65 = 60,225W So it was a 60W adapter I was using, which was the wrong type of adapter.

Status:

open

Original post by: Victor Clausson

Text:

Make sure you have the right power supply. MacBook Pro's uses 85W power adapters.

MacBook and MacBook Air uses 60W power adapters. That's why my MacBook Pro didn't start.

You can find it out by looking at the power adapter.

I figuered it out by multiply the voltage with the current, like this for example:

V = 16,5V

A = 3,65

16,5 x 3,65 = 60,225W so it's was a 60W adapter I was using.

Which was the wrong type of adapter.

Status:

open