Just had my logic board replaced, dim screen with no brightness control

My MacBook Pro 17 inch was just in for repair due to the nvidia 8600 issue (no video, Mac won't boot, etc.). I have it back as of this afternoon but when I turned it on the screen is unbelievably dim -- almost as if I have the brightness at the second-to-lowest level.
Here's the catch: when I attempt to use the brightness control, either via F1/F2 keys or in System Preferences the brightness will not change. The icon overlay shows up on the screen as if it is working but the screen brightness just doesn't work.
When I bring the brightness indicator all the way down, to the point where the screen would normally shut off, the screen stays on...but it's just the same dim screen.
Any ideas?

Test while started in Recovery : if the problem persists, then it likely is a hardware issue.
Resetting the System Management Controller (SMC) probably won't change anything, but you can readily do it before contacting the repairers.

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We just had our logic board replaced on our G4 2005 model is this common?

I have done some looking and seems the older G3 and G4s had this problem so maybe ours was a rarity. Also in my research seems apple came up with a separate coverage so do we need this in addition to the applecare extended warrantee?

I have done some looking and seems the older G3 and
G4s had this problem so maybe ours was a rarity.
Also in my research seems apple came up with a
separate coverage so do we need this in addition to
the applecare extended warrantee?
Wow! Didn't know I would be bashed for being consise. It is a G4 ibook we bought it Oct. 2005, (this is b/c I noticed in other posts that the G4 ibook date back to 2002). Not sure how else to put it as it was in my post earlier, "we just had our logic board replaced on our G4 ibook (which is stated in the original at the bottom corner as the brilliant apple people have designed to keep these consise) 2005 model is this common," then in the message it goes on to say that I have found other posts and other sites that have people typing about having to have their logic boards replace/repaired 2-3 times, ie this example below.
RE: logic board
Posted: Nov 7, 2005 11:40 PM in response to: Douglas Oconnor by Ronda Wilson
Douglas,
Apple didn't knowingly sell faulty goods. Once the problem was identified, Apple stepped up to the plate with the iBook Logic Board Repair Extension Program (which is not a recall — they are being fixed when and if they fail, but have not been recalled), and your iBook still falls under the three-year plan.
If that is not satisfactory to you, please take the measures I outlined in my previous post to you.
Sorry to not be more specific in the first post, I figured since my search brought this issue up immediately someone out there would know about this.
And to the second response, no I don't have a clue the difference is, that is why I bought an apple, suppose to be easier for those of us who are computer challenged.

I just had my logic board replaced. now im having trouble using the interent even with a strong connection and the internet is working on other devices!! please help me :(

I just had my logic board replaced. i am now having trouble with using the interent even with a strong connection. all other devices are having no problem with the internet. please help

Test while started in Recovery : if the problem persists, then it likely is a hardware issue.
Resetting the System Management Controller (SMC) probably won't change anything, but you can readily do it before contacting the repairers.

I just had a logic board replacement and upgrade to 10.9.2, now adobe master suite will not work

logic board replacement on mac book pro, and upgrade to 10.9.2; and my adobe master's suite will not work;the CS4 remains on my applications of hard drive ;computer tells me to contact Adobe??

These are user forums. You need to contact Adobe support directly, by phone or web chat.

Performing a system restore on iBook that has had its logic board replaced

I want ot do a system restore on my iBook G3. I had to send it in for a logic board replacement and received new install discs when it was returned to me. My problem is that I would like to have my iPhoto software and iMovie software that was installed on my computer when I purchased it. I have to do a clean install with the Mac OS X 10.3 disks that were shipped with the replacement of the logic board I will lose this. I want to use the system restore disks that came with my iBook when I originally purchased it. Is this possible since I have had my logic board replaced?

The simplest way to reinstall iPhoto and iMovie is to download Pacifist and then extract the relevant applications from the Software Restore Discs.
Pacifist comes with instructions; this is not a difficult operation and there is no need for erase & install to recover the applications.
Pacifist is Shareware, but you need not pay the fee in order to use it. Every time that you open Pacifist you will be prompted to purchase a licence. If you feel that Pacifist is worth the money (and I think that it is), you can purchase a licence at any stage.
If you're a plonker like me, then purchasing a licence will provide justification for third party developers like CharlesSoft to save the day for the rest of us.
Good luck!

Has anyone here had their logic board replaced yet?

I am going to take my MBP to my local Apple store tomorrow to hopefully get the logic board replaced due to the whine and some crashes. Has anyone had the board replaced? Does it fix the issue? I am just wondering if it is dead silent after the switch...

Yes, I just received mine back today for logic board replacement. It did get rid of the whine, I must say that apple's service was first calss. I placed a call last Wednesday, received a shipping box next day, prepaid I might add. DHL picked up the box on Friday, apple service center received, repaired and shipped it back on Saturday. Amazing, never experienced this kind of turn-around on anything.
Thanks Apple

I just had a logic board installed now my headphones don't work?

i have just had a new logic borad installed -
now my headphones don't work? (m-audio)
Am I missing something in preferences?

I would not even try to fix it after getting the logic board replaced. I would take it back to who ever replaced it and tell them it is not working properly.
Allan

I just have the logic board replaced

but everytime when I turn on the machine, I need to reset the
NVRAM (command->option->p->r) to have it boot up successfully.
Otherwise, all I can heard is the "bong" sound and the screen is kind of dark grey, no apple logo and spinning wheel.
Anybody knows what happen?

Try to press Alt when starting your Macbook to get the boot selector and select the boot disk with OS X, then select it again on "startup disk" system preferences and restart.
If it doesn't work, try to reinstall OS X.

Prompted to sign in to trial version of CS6 after logic board replaced

Hello. I purchased CS6 10 months ago and just had the logic board replaced on my iMac. Now, when I open Photoshop on that computer, I get a dialogue box "Sign in Required to use your trial version of Creative Suite 6 Design Standard". I did that, but I don't see a way to enter and validate my product installation code so that Adobe recognizes this as a legitamately purchased version. Any help is appreciated. Thank you.

Since sending the first message, I closed and reopened Photoshop and was prompted to either continue with the trial version or enter a valid license key. I did the latter, so hopefully I'm back in business.

Loud fan after logic board replaced

I just had the logic board replaced on my 17" iMac after it would not power up (apple did it for free because they said it was one of the defective boards). The fan now is VERY loud. I have tried reseting the SMU, setting the CPU speed to something other than automatic. Nothing seems to work. Top say the machine is idle 95% of the time... Before the board was replaced it was VERY quiet... Any ideas?

fxmBoston-
Greetings and welcome to the Apple boards.
Miriam is right. Take it back and have it repaired correctly. We have good consumer laws in MA so they have three chances to get it repaired correctly or they owe you a refund or a new machine.
Be firm yet polite.
Luck-
-DaddyPaycheck

Have you had logic board replaced?

Hi,
I am wondering if any folks who have sent their MacBooks in to get the logic board replaced (and received them back) could comment on the effectiveness of the replacement.
I have been reading the boards avidly (as my MacBook is off in repair-land awaiting a logic board replacement) and noticed that some folks have been speculating that the logic board replacement won't fix anything.
Could someone who has had a logic board replacement report on the effect? Did it fix the problem? (Note: my issue is/was that the macbook refused to turn on anymore after 3 weeks of problem-free use)
Thanks!

About 8 hours after receiving it, my MacBook would not turn on. Called AppleCare and was told to bring it into an authorized service depot. Diagnosed as a faulty logic board, it was replaced and it's been fine ever since. 2 weeks and counting...
MacBook 2.0 GHz Mac OS X (10.4.7)

Signal hasn't worked properly since logic board replaced

My logic board went out a 6 weeks ago, and I had it and the topcase replaced. Since getting those two components replaced, I no longer can pick up wireless signals in public places. I say "public" because at home, I can pick up the signal, but that's because my desk sits atop the base unit. So it's only when I'm out do I notice the problem.
I thought maybe it might be the logic board again, or the airport card, so I had the technician replace it again. So I have had the logic board replaced TWICE and had a new airport card installed. Same deal. It's software related from what I can tell.
Here's one symptom that is strange. As time progresses, it gets worse. So I started at 3 bars this morning, and finally the signal disappeared. I rebooted, and it came back, but at 3 bars. What is causing this? Do I need to wipe clean the HD and just reinstall OSX? I backed up everything last night preparing to do that, but wanted some info. I also have applecare, but right now, work's so chaotic I can't afford to be away from the computer.
PLEASE HELP!

You wrote:
"I doubt that reinstalling OS X would help here. From the following reference you can see that the iBook G4 uses an AirPort Extreme card. (ref: http://docs.info.apple.com/article.html?artnum=26277) Most likely this card was removed in order for the technician to replace the logic board. The card also has an antenna cable attachment.
I suspect that this cable is not fully attached, and may be worth having a look at to verify. (ref: http://docs.info.apple.com/article.html?artnum=108039) "
You may be right, but this is hard to believe in some respects. When I took it in the first time, the Airport Extreme card was not changed out, and the problem immediately materialized after teh logic board was replaced. I took it back a second time, and the logic board was re-replaced. I also requested a new Airport extreme card. That too was replaced. The antenna was also checked. None of this appears to have made a difference.

Serial Number Missing after Logic Board Replacement

I have a xeon xserve (2007) here that had its logic board replaced under warranty. I am now trying a remote install of a new OS (10.5). While trying the first 8 of the server's original serial number as a temp password (in Server Assistant and ssh), I realized that the serial must have changed in the logic board swap. Of course, the plastic tab in the back still has the old serial and MAC addresses on it, but the guys at the repair place (tekserve) at least stuck one sticker with the new MAC address onto the back.
Now, I booted into the old OS and found that the system serial number is simply missing form System Profiler (Both GUI and CLI).
Is there a way to set a new serial? This is making the system virtually useless as a headless install.

The main board in my MacBook Pro c2d was just replaced with a board whose serial number was "System Serial#". I thought that might be the reason that Time Machine doesn't recognise my backups. I changed the serial to my original with the bootable "Blank Board Serializer , v.3T106, part number 693-6430" from
http://spftp.info.apple.com/DiscImages/diagnostics/Apple_Service_Diagnostic/_ssps693-6430-01.dmg
Time Machine still wants to do a full backup. It has many reasons to not do what it's told.

After logic board replaced- SystemSerialNumb listed as serial number

I just noticed this.. I had my logic board replaced a few months ago. Now when I go to About This Mac, it lists my serial number as: SystemSerialNumb
The number is no longer there. I read about someone else who this happened to. Is there anyway to get the serial number back? I have it printed on my AppleCare.
The problem is now, if I can't prove this is my system, the one stated in Apple Care, how do I resolve that isse? Will I be able to ever get Apple Care for this computer?
Any help will be appreciated.
Bryan

Hello,
I have a little trick for you below. But, first I'll explain how this feature works and why it doesn't.
The serial number you were seeing in the System Profiler is written into a chip on the logic board.
But, when they refurbish a logic board, they clear out this serial number. Since they have no way of knowing which system it's going to be installed in next, they do not re-program another number into the logic board.
So, when you get your refurbished logic-board installed, that location that contains the serial number is cleared.
Apple will often reprogram the number into the logic board on complete systems that they refurbish. But, it is not common for them to do it on the individual logic-boards.
Unfortunately, the only way to get it to display in system profiler again, is to re-program that serial number back into the logic board. And, Apple is the only one with that tool.
But, you can continue to use the serial number that is printed on the foot of your computer for all warranty related items. That number is still your "official" serial number. So, the number you use has not changed. It is just not visible in your System Profiler.
Now, there is a little trick to make your serial number display in the "About this Mac" window.
You can read about that here:
http://discussions.apple.com/thread.jspa?messageID=1511437#1511437
I hope this helps.

Logic Board replaced, Time Machine wont recognize old backups

I just got my Logic Board replaced and obviously having the problem with Time Machine recognizing old backups. I looked at old forums and found the macosxhints page (http://www.macosxhints.com/article.php?story=20080128003716101) on how to fix the problem but when I try to enter cd /Volumes/Time Machine/Backups.backupdb into terminal it gives me a message saying "no such file or directory" i dont know where to go from here any help would be appreciated thanks for your time

instead of Time Machine in that command you should enter "name of your TM drive" (put the name of your TM drive there and KEEP THE QUOTES). However, as you seem to be unfamiliar with terminal you will very likely have further problems following that hint. Try this one instead
http://www.macosxhints.com/article.php?story=20081216145458979&query=%2Bfsaclctl

Just had my logic board replaced, dim screen with no brightness control

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