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現在のバージョン作成者: mayer (投票の詳細) ,

タイトル:

Super Technical Question about power inside a MacBook Air

テキスト:

I need to know what voltage the logic board gives out to the keyboard backlight. I know this is very technical but I'm hoping somebody maybe has 1 open or has checked this for themselves in the past. If you look at step 15 you can see what plug I'm talking about that I need a voltage reading for.

[guide|6313]

My MacBook Air keyboard had an issue and when I took it apart I found I needed a new 1. So instead of just getting the same 1 from early 2010 I found out that 2011 and latter are basically the same but have keyboard backlights. So I want to put a backlight in mine but my logic board doesn't have the plug for the back light so I need to know the voltage so I can supply the right power to the backlight from somewhere on my logic board or poss from the battery connector directly next to where it would normally plug in. Thanks in advance for any help.

=== Update (09/28/2016) ===

Dan you make a good point.

But, if the keyboard backlight lets just say uses 2 volts to make it a round number and the controller lets you turn it from 1v low to 2v high (full bright) and if I can find an accessible place on the logic board that I can get a steady 1.5v from (give or take) that powers up with the computer and down after shut down.

The only difference is, I won't be able to adjust mine from low to high. My computer without the backlight still uses the exact same battery as the MacBook Air with a backlight so my battery won't die any faster then a computer with a backlight.

I will find the links of the guy on here that did it and post them tonight or tomorrow.

=== Update (09/29/2016) ===

Dan,

Did you see my post up above connected to my original post? I understand you don't think it can work and it will be on all the time or kill my battery life.

I've been doing things my whole life that people tell me couldn't be done. Maybe it won't work and I'll burn up my computer or maybe I'll find a way to make it work just because everybody said I can't.

Either way is fine but it's going to be a little harder if I don't know how many volts a backlight takes to power up. I don't need to be able to adjust mine like on the newer models. It just needs to illuminate the keys a little bit so I can see them in a dark room. Like I said if the controller adjusts the brightness by supplying 1v for low and 2v for high I will find a spot that gets 1-1.5v when the comp is turned on and 0 when it's turned off so my keyboards backlight turns on and off with the computer.

デバイス:

MacBook Air 11" Mid 2011

ステータス:

open

承認された回答:

340098

編集者: Jay D ,

タイトル:

Super Technical Question about power inside a MacBook Air

テキスト:

I need to know what voltage the logic board gives out to the keyboard backlight. I know this is very technical but I'm hoping somebody maybe has 1 open or has checked this for themselves in the past. If you look at step 15 you can see what plug I'm talking about that I need a voltage reading for.
 
[guide|6313]
 
My MacBook Air keyboard had an issue and when I took it apart I found I needed a new 1. So instead of just getting the same 1 from early 2010 I found out that 2011 and latter are basically the same but have keyboard backlights. So I want to put a backlight in mine but my logic board doesn't have the plug for the back light so I need to know the voltage so I can supply the right power to the backlight from somewhere on my logic board or poss from the battery connector directly next to where it would normally plug in. Thanks in advance for any help.
 
=== Update (09/28/2016) ===
 
Dan you make a good point.
 
But, if the keyboard backlight lets just say uses 2 volts to make it a round number and the controller lets you turn it from 1v low to 2v high (full bright) and if I can find an accessible place on the logic board that I can get a steady 1.5v from (give or take) that powers up with the computer and down after shut down.
 
The only difference is, I won't be able to adjust mine from low to high. My computer without the backlight still uses the exact same battery as the MacBook Air with a backlight so my battery won't die any faster then a computer with a backlight.
 
I will find the links of the guy on here that did it and post them tonight or tomorrow.
 
=== Update (09/29/2016) ===
 
Dan,
 
Did you see my post up above connected to my original post? I understand you don't think it can work and it will be on all the time or kill my battery life.
 
I've been doing things my whole life that people tell me couldn't be done. Maybe it won't work and I'll burn up my computer or maybe I'll find a way to make it work just because everybody said I can't.
 
Either way is fine but it's going to be a little harder if I don't know how many volts a backlight takes to power up. I don't need to be able to adjust mine like on the newer models. It just needs to illuminate the keys a little bit so I can see them in a dark room. Like I said if the controller adjusts the brightness by supplying 1v for low and 2v for high I will find a spot that gets 1-1.5v when the comp is turned on and 0 when it's turned off so my keyboards backlight turns on and off with the computer.

デバイス:

MacBook Air 11" Mid 2011

ステータス:

open

編集者: Jay D ,

タイトル:

Super Technical Question about power inside a MacBook Air

テキスト:

I need to know what voltage the logic board gives out to the keyboard backlight. I know this is very technical but I'm hoping somebody maybe has 1 open or has checked this for themselves in the past. If you look at step 15 you can see what plug I'm talking about that I need a voltage reading for.
 
[guide|6313]
 
My MacBook Air keyboard had an issue and when I took it apart I found I needed a new 1. So instead of just getting the same 1 from early 2010 I found out that 2011 and latter are basically the same but have keyboard backlights. So I want to put a backlight in mine but my logic board doesn't have the plug for the back light so I need to know the voltage so I can supply the right power to the backlight from somewhere on my logic board or poss from the battery connector directly next to where it would normally plug in. Thanks in advance for any help.
 
=== Update (09/28/2016) ===
 
Dan you make a good point.
 
But, if the keyboard backlight lets just say uses 2 volts to make it a round number and the controller lets you turn it from 1v low to 2v high (full bright) and if I can find an accessible place on the logic board that I can get a steady 1.5v from (give or take) that powers up with the computer and down after shut down.
 
The only difference is, I won't be able to adjust mine from low to high. My computer without the backlight still uses the exact same battery as the MacBook Air with a backlight so my battery won't die any faster then a computer with a backlight.
 
I will find the links of the guy on here that did it and post them tonight or tomorrow.

デバイス:

MacBook Air 11" Mid 2011

ステータス:

open

オリジナル投稿者: Jay D ,

タイトル:

Super Technical Question about power inside a MacBook Air

テキスト:

I need to know what voltage the logic board gives out to the keyboard backlight. I know this is very technical but I'm hoping somebody maybe has 1 open or has checked this for themselves in the past. If you look at step 15 you can see what plug I'm talking about that I need a voltage reading for.

[guide|6313]

My MacBook Air keyboard had an issue and when I took it apart I found I needed a new 1. So instead of just getting the same 1 from early 2010 I found out that 2011 and latter are basically the same but have keyboard backlights. So I want to put a backlight in mine but my logic board doesn't have the plug for the back light so I need to know the voltage so I can supply the right power to the backlight from somewhere on my logic board or poss from the battery connector directly next to where it would normally plug in. Thanks in advance for any help.

デバイス:

MacBook Air 11" Mid 2011

ステータス:

open