What does the Logic Board do exactly?

My MacBook took a little fall yesterday. I went to the Apple store and they told me that the logic board needs to be replaced, and I was curious as to what it does. I have no doubts that the genius at the store was correct, I'm just wondering what it does for future reference.

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Does the logic board affect battery performance?

Anyone know of any issues at all?
Cheers

Yeah sorry. It's just that i had my macbook pro repaired due to a faulty logic board. It's a known problem and covered by Apple, so the repair was free. Since it's come back the battery is not working properly. Never had a problem before with it. I suspect that that they've given me someone else's duff battery. However, I'm investigating the possibility that the battery is fine and it's a faulty logic board that is causing the power problems. The battery used to tell me at about 10% to plug in my power cord, and even when i didn't it just went to sleep - as in after getting a dose of power all the programs were open that i was using etc. Now it shuts down at about 35% power.
Does anyone know if the logic board repair could be causing the problem?
Cheers

What does the range expander do exactly?

Hi, I would like to know, what does the range expander does exactly, does it only relay a signal farther away or does it actualy amplify the signal. I would like to know because right now there are 3 computers in my house that are only receiving a "weak" signal and I would like to boost that... I can't pass wires through the walls so it has to be wireless...
thanks in advance

The range expandr does increase the range of your wireless signal , However the throughput is reduce by half eg: if you are getting a speed of 54Mbps from the router to the range expander , then from the range expander to the PC your transmit rate be be approx 22Mbps . Every consequent range expander you connect will increase the range , but again the transmit speeds will be reduced by half.

What does the private keyword mean exactly?

Hi,
I thought I understood what "private" meant, but apparently not fully.
Can someone explain the difference between the following two chunks of code and why one compiles when the other doesn't?
class Component
private Object loopID;
private Container container;
public boolean isActive()
    return loopID == container.loopID; //Doesn't Compile
    return loopID == getContainer().loopID; //Does compile
public Container getContainer()
    return container;
class Container extends Component
}

Put simply, private means you can't access the
variable from outside
the class. So you cannot use the "." operator to get
access to it.
But the method can return a reference to it, so the
accessor method
allows you to return a reference to the variable.
Think of it this way:
If you want to do "x.y" or "x.y()", the
variable/method has to be public.
If the variable/method is private, you can't access
it with ".".
By the way, there is an edit button--It is in the
right corner above the message. I just added this
with it. I didn't know it was there before.
Message was edited by:
WhyNotFerzlePut simply: no. Private means that access is only allowed from within the body of the top level class where it the member or constructor is declared. Your example is just wrong on a number of levels. I can access the member of an instance using "." if I have access, and I cannot if I do not have access.

What does the Ipod Nano hold exactly?

I was just wondering if it held everything like the ipod original does? Will it hold files like the ipod use to or is it just for music and movies?

The iPod nano is just a smaller, less capacious version of the iPod classic. There are no differences in capabilities.

What does the empty() method do exactly?

Any help appreciated, can't find it in here http://www.adobe.com/devnet-docs/edgeanimate/api/current/index.html - is there another doc i should be reading?

It's a jquery method, details found here
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Does anyone know what the second button is for on the logic board of an iMac G5 (PPC), 1st generation ?

One button on the logic board of a 1st generation iMac G5 (PPC) is an alternate power button. Does anyone know what the purpose of the other button is?

I am far from certain but I believe it is the power management unit (PMU) reset switch a/k/a Cuda switch: http://support.apple.com/kb/HT1939
Do not press it when the computer is on.

My 2011 MacBook Pro does not start and stop after the apple appear, they said that the problem is a video problem and need to change the logic board. Cost almost same to buy a new one. Somebody have the same problem?

I have a MacBook Pro early 2011. Does not start. After the apple show, a blank screen appear. The service said that the problem is with the video plaquue in the logic board. Need to change. Cost lmmost the same than a new MacBook Pro. Somebody has the same problem? What we can do?

I hate to break this to you, but life isn't fair. If your job is that critically in need of a computer, then you should have a spare to use for just this kind of situation or have your employer provide you with a computer to use.
Computers break down, just like cars. If your car breaks down do you curse the car maker or get it fixed? Surely, you paid more for your car than the computer.
This is reality. Best get used to it because it won't get any better.

What is the little golden coloured metal tab that sticks out the side of the logic board?

Hi,
On the logic board of a 3g and 3gs (i am not sure about the other models) there is a golden coloured tab that sticks out and when the board is in the housing it makes contact with the chrome bezel.
I was wondering what the job of this little part is and what the implications would be if it did not do its job properly.
Thanks

Just be sure no extra parts are left over when you re-assemble it..... as KT said this question goes way, way beyond any guidance than can be offered at this location.

Exactly what does the Data Drop-down List do?

What does the Data Drop-down List do? Is it used to make a drop-down list from certain records in a column in a table of a data base?

Yes, this is exactly what it does. However, it's a custom control, not a built-in control. JavaScript is used to set it up. In order to use it you have to have a data connection in the document and modify the "Initialize" script, which is were the list is populated from the DB. The "Initialize" code is a good example of how to use XFA JavaScript to access a DB. However, the code is also written in a very general manor and takes the long way around to hooking up to the DB. Much shorter code can be written for a specific DB.
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WindJack Solutions
www.windjack.com

Does Apple Hardware Test cover the Logic Board

Hello,
I was wondering whether the Apple Hardware Test tests the Logic Board. Would I have to do a extensive scan? The reason I am asking is because I am having a possible issue with the sound chip and the Apple Store told me to go home and do a Hardware Test, but never said if the Logic Board is actually covered in testing. Thanks.

My understanding with the extended test is that it's run time will be based largely off how much RAM your system has. I always used the rule of thumb that it was 25-40 minutes per GB of RAM. I once ran an extended test on a Mac Pro system with 12GB of RAM that took almost 9 hours to run.
The AHT test is not designed to detect any/all hardware issues, even the extended test. Apple Service Providers (Retail Stores as well) have another software-based diagnostic tool that they run, which I believe to be superior to AHT in terms of detecting some issues (not all). Sometimes for specific issues with components on the logic board, there isn't a software test that's going to pick up the issue and you may need to go by what's occurring in the OS.

I have a Mac book pro, 15" that I bought 4 years a go, the logic board has died, what recoarse do I have with Apple regarding a product that should last years

I have a 15" Macbook that I bought in late 2007, which is just 4 years old Since then the battery wont hold a descent charge, the screen had to be changed and now the logic board has died. plus there is an issue with the video card for that same model. I would expect a product that carries the Apple brand to last longer. They are not cheap to buy and its some thing that I cant afford to replace every few years. Does any body think that Apple has an obligation to do the right thing or am I expecting too much.

Four years is a pretty typical lifespan for a battery (and for a computer in general).
Does any body think that Apple has an obligation to do the right thing or am I expecting too much.
You are expecting too much.

I have been trying to get my ibook g4 fixed from apple for 6 years now. my ram doesnt work and the logic board is f'd up aswell... i know 12 people that have had the same issue. 4 of them got there ibooks replaced. anyone know what to do?

i have been trying to get my ibook g4 fixed from apple for 6 years now. my ram doesnt work and the logic board is f'd up aswell... i know 12 people that have had the same issue. 4 of them got there ibooks replaced. anyone know what to do? all 4 ibooks were replaced outside warranty, why wont apple help me...

Apple supports most of their computer products for a 7 year period, could be that your IBook is well past any kind of help.Secondly parts are no longer being made for this machine and never will be again. Finally I find it hard to believe that nothing has been done with this for 6 years.Have you documented the reasons why you were turned down for repairs ? were the replaced Ibooks within a couple of months of warranty expiration? What model is your IBook ? At least if we knew what the model #, some of the more techy types could find out if there were any repair programs for your model.
Seems odd that you'd hang on to a non-working IBook for that long.

I got my Macbook Pro 17inch (early 2011) back from Apple (they had to replace the logic board) and now my microphone is not working

I got my Macbook Pro 17inch (early 2011) back from Apple (they had to replace the logic board) 3 days ago, I had a terrible experience as the genious who gave me my solid state disk for safekeeping lost my disk's brackets thus I had to wait 2 more hours until they find one after 10 days of waiting for the repair. I noticed some weird sounds, like somehting is moving with the mac 1-2 times, even if I have no mechanical parts other than the fans, but my real issue at the moment is that my microphone is not working. I can see the mic in the System Info however and in Audio Midi Setup. In the Audio Midi Setup I see that the master chanel is turned off and I can't turn in on. Ch 1 and 2 are on full. I also noticed the first seconds after the comp. boots the blue bar goes to the middle in the System Preferences -> Sound -> Input. Any ideas what to do or try? I do not want to go back to the apple store as it is 50 minutes away from here and I need my laptop as a computer science student. Everything else is working perfectly.

You need to call both the store that did the repair and Apple directly, warranty service or Apple care, and report this problem with both of them and get a ticket number of some kind (some kind of verification number) that the unit just came back from major service with this problem and that you want it fixed when you can lose the use of it, which is not right now.
Without doing something like that they could easily say it is damage not covered under the normal warranty.
God knows what the repair center did and did not do to it while it was there.
And depending on when you actually bought it the warranty could run out in the mean time.

Replacing the Logic Board on an iMac G4 (flat panel)

Hi all
A friend of mine has a G4 Flat Panel iMac, and apparently, though I've not seen it for myself yet, her Logic Board died on her. She has since bought an iMac G5. But I've been trying to find where one can get a replacement logic board from, that isn't going to break the bank. I've found nothing so far. Are these available anywhere? And will they be so expensive as to make it not worth the bother? And of course I have not found any technical data about how you open and replace components in one of these iMacs. Apple don't post them since they are supposed to be tampered with only by Apple certified technicians.
Thanks.

Hello,
Apple doesn't typically make their repair components available to the end-user. So, it's a bit harder to find a replacement logic-board for one of their computers.
The service centers can get them, but it's not going to be cheap.
Typically, you can expect to pay $500 to $800 for a replacement logic-board from Apple.
And, the service center is only going to sell it to you if you let them install it.
But, you can sometimes find places that sell them.
This place used to sell lots of Apple logic-boards, case parts, brackets, keyboards, etc. But, they stopped for some reason. But, you might call and see if they have what you need in a warehouse somewhere:
http://cgnusa.com/scripts/default.asp
And, this place does sell some parts for the Do-It-Youself person. But, they typically require you to send in your system for a new logic-board. But, you might be able to get a price from them:
http://www.dttservice.com/index.html
In all honesty, if you are looking for a part you can install yourself, and don't want to pay $500 or more, then you are probably better-off trying to find a used part.
If you can find one who's screen died, but the logic-board is still good on, then you may be able to work out a deal. I hate to recommend them, but e-bay is probably your best chance for a used replacement logic-board. Just don't pay too much.
Whatever route you / they choose, keep in-mind the price of a low-end Mac Mini. Don't spend more to repair an old system than you would spend to buy a current low-end system.
I hope this helps.

What does the Logic Board do exactly?

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