Question: Q: Logic Board Fix Needed
I have an early 2009 24″ Intel iMAC that has developed a Logic Board fault.
The replacement Loard Board is expensive, so I need to know if there is a economical fix for Logic Boards that fail?
Has the Apple engineering investigated the problem, and have identified what is at fault and can offer advise on how to do a fix?
The replacement Logic Board cost is well on the way to buying a new iMAC, and this is what worries me, if I buy another will I be facing the same problem in a few years time?
From a now very worried iMAC owner.
iMac (24-inch Early 2009), OS X Mountain Lion (10.8.3)
Posted on Apr 26, 2013 3:44 AM
I’m going to try and explain this simply, becasue we are now entering the world of the Apple technitian. This pretty above the port and call of the average advanced Apple user as it is in the realm of hardware.
Your logic board is pretty much the only board in the computer and is a ‘iWord’ really. (An ‘iWord’ is a word that really means something else but is used by Apple to differentiate thier own products from everyone elses. e.g ‘PC’ as a Mac is a PC too, Time Machine is a NAS, etc etc also all ‘iTems’ aka Apple products starting with i are ‘iWords’).
What you’re looking at is a motherboard. Specifically a laptop/AIO motherboard, due to the fact that the Graphics and Processor are non-removable from the drive.It may be worth getting the hardware looked at and repaired rather than replaced as your Logic board is essentially the entire iMac minus the screen, hard drive and power conversion.
The problem here is that Apple loves it’s price premium, and part of that is making sure that the parts and repair cost a price premium too. To do that, it makes all it’s stuff in as few parts as possible and basically glues a lot together too (see iDevice batteries and cases). It then makes repair insanely easy for it’s own staff by instructing them to just replace one of these large parts rather than diagnose and repair. Your iMac is essentially a Intel laptop, maybe it’s time you took it to go and see a doctor instead of leaving it in the trash and getting a new one.
If the worst comes to worst, you can also trade it in on that website, or buy a working 2009 iMac from eBay or some such and have the Hard Drive swapped.
Finally, you can buy one from here for example:
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Question: Q: Logic Board Replaced. What is it and why?
Stopped working no reboot: Bought MacBook 5 months ago. No problems at all. Last week, in the middle of typing it just faded out, went dark, and stopped working without making a sound. I could not for the life of me get it started again. Took it to the Mac store and since I bought it from the Amazon Warehouse and had no apple care plan, I was amazed to find I was under warranty.
They fixed it by replacing the MLB ( logic board ). My questions are these:
1. What does a logic board do?
2. Why would a logic board go out?
3. What do I need to do to best assure that it never happens again
4. I got this 13 » for $990. Is the AppleCare Plan worth it?? If so, why?
Thnx in advance.
13″ MacBook, Mac OS X (10.3.9)
Posted on Aug 12, 2007 3:17 AM
1. What does a logic board do?
It is the main board of the computer. It controls almost all the functions that occur.
2. Why would a logic board go out?
Something died on it.
3. What do I need to do to best assure that it never happens again.
There is really not a lot you can do. Main thing is keep the rear vent clear to allow heat to escape. I use canned air to blow out the vent every so often to get any loose dust out and clear the fan.
4. I got this 13 » for $990. Is the AppleCare Plan worth it?? If so, why?
After the first years warranty is over you will pay for any repairs. Replacing the logic board is not cheap. It would have come out of your pocket. With applecare you get 2 more years warranty and phone support also. I am buying mine fro LA Computer much cheaper and there are others on here that have used them. You have to purchase the applecare plan before your first year is up.
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Question: Q: Logic Board
I have an Ibook G3 800. I bought it on Ebay, and the logic board just started acting up on me. I’m wondering if apple’s logic board replacement program is still going on. Right now I’m typing on it with a weight over the track-pad. It’s truely an inconvenience.
Ibook G3 800MHz, Mac OS X (10.4.10)
Posted on Jul 9, 2007 7:06 AM
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Hi, and welcome to Apple Discussions.
The iBook Logic Board Repair Extension Program is ongoing, but only for certain iBooks that fall within the three-year time limit (which excludes most of them).
You can find the original purchase date of the iBook, by entering its serial number into the box at the bottom of Apple’s main support page under «About Your Support Coverage.»
If it is past the three-year time limit, you may want to consider trying the shim fix suggested by John Sawyer in the Apple Discussions iBook G3 (Dual USB) Displays Forum:
[Y]ou can often fix this yourself by removing the iBook’s bottom housing, and placing a shim of any sort, about 1mm to 1.5mm thick, onto the raised square on the bottom shield. I use a Scotch mounting square—you can get them in hardware stores and many grocery stores. When you reinstall the bottom case, it will press against this shim, which will press against the graphics chip, and may allow the chip to come into better contact with the logic board.
John Sawyer
CJS Macintosh Repair
Instructions for removing the lower case:
Jul 9, 2007 7:49 AM
I actually called apple, and asked about the Logic board replacement program and the person told me that my Ibook is not eligible. He then told me it would be $299 to cover everything (parts, labor, shipping, etc.)
Needless to say, I re-shimmed my Ibook some post-it notes, and it’s working fine now.
Thanks for the help.
Jul 9, 2007 8:20 AM
DT & T Computer Services in Fremont, California will do the repair for $195, but you have to pay shipping both ways. I don’t recommend them as often these days since they stopped giving a six-month warranty, though. Even so, it’s cheaper than the $299 Apple quoted.
It’s getting to the point where these G3 iBooks are old and rickety enough that I wonder if they are worth $200 in repairs. In my opinion, that money is better spent toward a new computer (if you can possibly afford it).
Jul 9, 2007 10:03 AM
Thank you for suggesting the shim trick! I am on my 5th Logic Board and didn’t want to pay for the 6th. I tried the shim and my ibook is up and running! I backed everything up immediately:)
Jul 25, 2007 7:24 PM
Hi, and welcome to Apple Discussions.
I’m glad you found the help you needed to keep your iBook running for awhile longer.
Jul 25, 2007 8:39 PM
Jul 28, 2007 3:54 AM
(By the way, a blow dryer on electronic components is not a good idea. You could do more harm than good.)
Jul 28, 2007 5:46 AM
My mother’s ibook G3 had it’s logic board replaced during the Apple replacement program, but now it is doing the same thing as others have reported: freezing up, lines in the display, going black, etc..
I tried Rhonda’s excellent shim fix (but used some double-sided foam and just peeled off the tape on one side to hold two strips in place on the raised section of the aluminum, rather than the mounting strips or sticky notes) and that seemed to cure the problem.
However, since then, she has reported to me that is is doing the same thing and will freeze up if the computer is moved at all or sometimes just sitting there. Maybe I should have used a material that would not be compressed as time went on or maybe yet ANOTHER logic board replacement is needed. I priced a G3 14inch iBook logic board on the FixIt web site, but it seems to be out of stock AND it costs $300 just for the part! If I am going to have to go through the (seemingly) arduous task of taking the whole thing apart to put in a new logic board and still have to pay $300 for the part, I would rather pay $300 for someone else to do the whole thing, if that is indeed what Apple would charge.
I don’t suppose there is any way to get Apple to fix this for free, since they apparently did not do it right when they replaced it during the program, even if the program is over now??
Thanks for all your good advice here.
Aug 19, 2007 8:56 AM
Have you considered sending it to DT & T Computer Services (link is a couple of posts down)?
They’ve reinstated their six-month warranty, and charge $195 for the repair (plus shipping to and from Fremont, California).
Once you get it fixed, tell her to try never to pick it up by the left front corner alone. The theory is that picking it up by the left front corner alone can contribute to logic board failure when the case flexes, causing the graphics chip to come loose from the logic board. If she’s picking it up in her left hand (as I often do mine), have her pick it up in the center under the trackpad.
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Question: Q: Logic board
Digital Audio G4 dual 533Mhz 1G ram (3 Slots), Mac OS X (10.4)
Posted on Jun 2, 2006 12:17 PM
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Jun 2, 2006 12:29 PM
Kevan, welcome, here is a basic definition that explains it quite well.
Motherboard.
Also known as the mainboard or logic board, this is the main circuit board of your computer. If you ever open your computer up, the biggest piece of silicon you see is the motherboard. This is where you’ll find the CPU, the ROM, memory expansion slots, PCI slots, serial ports, USB ports, and all the controllers for things like the hard drive, DVD drive, keyboard, and mouse. Basically, the motherboard is what makes everything in your computer work together.
And yes if you purchased a logic board with more RAM slot you could add more memory, however this would not be a very cost effective move.
Power Mac G4 Gigabit Ethernet Mac OS X (10.3.9)
Jun 2, 2006 12:39 PM
Changing Logic board means changing whole computer, so I think it has to be very hard work, if it is possible.
But if you want newer logic board because of more RAM slots, then you need board form PowerMac MDD (mirror drive doors) at least, older boards has max 3 slots for max 1.5 GB RAM. But MDD has some very important differences — faster bus, faster (DDR) RAM and CPU lays in different place! This means that even if the board would fit in the Sawtooth case (which you have), it definitely won’t fit to fan openings! And I doubt if there will be the right room for SPU, HDD etc.
Apple style of building machines is quite different from PC style with unified and universal components. I think that even placing board form newer PowerMac to case from older PowerMac is not possible, not to mention other components.
Jun 2, 2006 12:44 PM
Honza has a good point. Even if you purchase a new logicboard it may not fit within the case. Mac components are 99% propriatery, so it’s not easy to switch things out all the time. Graphics cards and sound cards are one of the instances where this isn’t the case.
Even in PC’s you have to take into account your Case for when getting a new motherboard. Alienware has huge cases and can fit basically any board, while Dell and HP make smaller cases where it’s harder to fit some motherboards in.
Then there’s the extra components to think of as well: Fans, cards, hard drive. etc. So you could try and upgrade to another logic board but it may not fit.
In all if you want more RAM it looks more like you’ll need to go and purchase a machine that is capable of higher RAM.
Jun 2, 2006 12:51 PM
Jun 2, 2006 12:52 PM
Kevan, unless you have no other life and absolutely nothing else to speed your small fortune on, may I suggest a G5, at least we know it will work. Good luck dude.
Power Mac G4 Gigabit Ethernet Mac OS X (10.3.9)
Jun 2, 2006 1:04 PM
I see just one possible option, if you really need more RAM — buy PowerMac G4 MDD or whatever newer. Also you can check apple-history.com, for each mac there is max possible amount of RAM written.
But this is not what you were waiting for I think, what exactly are you going to do on your mac? Are you sure you can’t do without more RAM than 1.5 GB?
Jun 2, 2006 1:05 PM
Jun 2, 2006 1:14 PM
Jun 2, 2006 1:27 PM
Kevan, you have three DIMM slots support up to 1.5GB of PC133 SDRAM, being backward compatible if you had a GE they would run at only PC100.
I think you will be just fine.
Power Mac G4 Gigabit Ethernet Mac OS X (10.3.9)
Jun 2, 2006 1:41 PM
I wouldn’t get too hung up on the 1.5GB v 2GB RAM. Obviously you need sufficient memory for what you’re doing, but when it comes to rendering etc I’d imagine the biggest bottleneck is the bus and processor speed and an extra 512MB of RAM would probably make little difference.
If I’d bought a G4 and found it to be a Digital Audio rather than a Gigabit Ethernet I’d be pleased, as it has a slightly faster system bus and memory, a x4 AGP slot rather than x2 and was available with faster processors.
What you’ve lost by having slightly less memory you’ve probably more than made up for by having slightly faster memory and processors. The dual processor 533MHz Digital Audio is almost certainly the best suited computer for what you’re doing in its price range.
Jun 2, 2006 11:50 PM
Thanks Gary, that is exactly what I was trying to say.
Power Mac G4 Gigabit Ethernet Mac OS X (10.3.9)
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Question: Q: Life of Logic Board
Posted on Jun 29, 2009 11:03 PM
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There have been several issues with the iBook’s logic board, as you will see if you type Logic Board in the Search field. Most of it has to do with bad solder joints, and is not user induced, so there really is little you can do to prevent failure.
Jun 30, 2009 7:07 AM
Jul 1, 2009 1:27 AM
so the best thing is to ditch the iBook and upgrade then?
I don’t think I said that. If you had your logic board replaced, check to see what kind of warranty you have on it. You should be able to get at least that much of a useful life out of it. However, it may last for a long time. Although the iBook G4 has an unusually high rate of logic board issues there are many iBook users who have never had a single issue. Some users who have had issues have had their logic boards reballed at a cost of around $75 and keep them running for many years. So, I don’t think that upgrading from you iBook is your only option. If you like the computer there is no reason why you shouldn’t keep it going.
Jul 1, 2009 5:35 AM
About 2 years ago I sent my iBook’s logic board off to Superior Reball and had it reballed for around $75 + 1 way shipping. It took a while to get it back, but it has been working perfectly ever since. It does require pulling the logic board out and sending it to them, but is a very affordable fix if it would work for yours.
Like Cornelius says, check and see what kind of warranty you got and see if your board can be repaired or replaced under warranty. But if not, you could consider a reball. I understand that if the board cannot be fixed, there is no charge.
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