Logic Board Of IMac Failed

Apr 23, 2012

? the logic board of my iMac failed. It was replaced by Apple, but they couldn't tell me why this had happened. Looking for answers to avoid future problems.

iMac, Mac OS X (10.6.8)

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MacBook Pro :: Is It Hard To Change A Failed Logic Board In It

Jul 2, 2012

Is it hard to change a failed logic board in a Macbook pro and will it be expensive? Where is the best palce to get cheap parts from?

MacBook Pro

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MacBook Pro :: Logic Board Failed Because Of Battery Connector

Jul 3, 2012

After 1.5 years of use, my MBP's hard drive failed. So I purchased a new SSD and followed carefully the installation guide on [url].. and also [url]..

After the installation my macbook was unable to power up. I took it to Apple Genius Bar and the guy told me my Logic Board has been damaged, possibly because of the installation. He also told me I was not meant to disconnect the battery connector because this causes damage to Logic Boards.

Info:MacBookPro, Mac OS X (10.7.2)

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MacBook :: Replacing C2d Logic Board With Cd Logic Board Cause Heat Sink?

May 13, 2008

so i've got a system with a fried c2d board. i can pick up a cd board for $150 plus shipping which is good for me. to find a comparable replacement, i'm looking at ~350 and i'm just not feelin that price as im on a budget.

i'm not concerned about the speed decrease as im just trying to get this thing rebuilt.

i understand that there are different heatsink assemblys..vertical vs horizontal. however, i do not know how to tell the difference and i am also unsure whether or not my c2d heatsink will work on this board i receive.

the logicboard possess a t7300 c2d and model # is 820-2279-a, it appears.

i cant find anything on that model, except for on ebay.

and i totally cant find the serial number on this macbook. under the battery on the tray has no serial number listed, and i've read through this documentation [URL]

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PowerPC :: What To Do With A G5 IMac And A Bad Logic Board

Jun 26, 2009

As the title implies, I've got 3 year old G5 iMac sitting as a paperweight at my desk. At least half that time ago the logic board died and I was quoted a repair bill of around $900. I couldn't go with it, but I couldn't decide what to do with it either. I now have to get rid of it and since I know that this model had lots of issues with logic boards I'm hoping some of you will have some good advice.

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IMac :: Where To Get Replacement Logic Board C2D 1.83?

Nov 7, 2009

I got a mac mini out of warranty (core 2 duo 1.83 ghz) that just died on me. I went to the apple store and they sent it in for a diagnostic. They confirmed that the logic board is dead and will be around $350 to replaced. I'm still weighing my options and was wondering if anyone can direct me to a site that sells replacement logic boards to see if I'm better off doing the repairs myself?

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IMac PPC :: Replace Logic Board On G5?

Mar 10, 2012

My IMac would turn on I would hear the fans spin/whirl but know "ping" noise to tell me it was powering up. Screen was dark.So I replaced the power board. This did not work. So now I've been told that the logic boad needs to be replaced.

Info:iMac G5 (17-inch)

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PowerPC :: IMac G5 Logic Board Replacement

Mar 3, 2008

My 17 inch iMac G5 1.8ghz seems to have died. For a while it's been refusing to power up and then powering up randomly but now it wont power up at all. I've looked on the logic board and reset the SMU etc but I can only get the first LED to light up. I think this means the logic board has died. Is it worth replacing the logic board and can it be done easily myself? Or should I just bite the bullet and pay out for a new alu intel iMac? I'm in the UK btw, any ideas on logic board prices?

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IMac :: G5 Witth ISight Logic Board Removal

Dec 7, 2010

I can't seem to figure out how to remove the logic board from a G5 w/iSight that I've been given to have a look at. What happens is that the unit powers on, the LCD display slightly brightens (getting power) but stays dark, and that's it. No beeps, boops or other responses beyond that. If you remove the RAM chips, the LED power lights gets mad and blinks at you, but that's about it. On the board itself I get the two diagnostic LEDs lit. The third never even flickers.

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PowerPC :: Cost Of Replacing IMac G5 Logic Board?

Feb 11, 2006

My iMac died a few days ago. I shut it down the previous night, and then in the morning when I went to turn it on, nothing happened. The screen display doesn't turn on, nothing. I opened it up and did the LED tests, and found that the first one would turn on, but none of the others would. The apple site says to take it to a store and have it fixed.

Now, I bought my mac on December 19th, 2004 ( what a day that was). At the time, I didn't think I'd need to buy applecare or anything. So about how much do you guys think it would cost to replace the logic board? And also, how long would it take to have it replaced?

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IMac :: INTEL 24" Logic Board Failure - How To Fix It

Nov 7, 2009

i need some advice on what to do next, my Intel 24" iMac has failed, diagnosed as a faulty logic board by the Apple Genius. I purchased the iMac in Dec 07, and I deliberately did not purchase the extended warranty as this is a desktop unit, that in 20 months of ownership has never been moved, dropped or transported anywhere.

I have no option than to either pay for the repair - �380 or sell on eBay for spares...!

I informed Apple about the Sale of Goods Act, and they have put the owness on me to prove it was faulty from date of purchase...! They have informed me that I need to visit an Apple authorised service centre where they will run a test and produce a report, which will determine if the fault was there in the first 6 months of ownership.

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PowerPC :: Replacing IMac G5 ISight Logic Board

Jan 22, 2010

I've recently been having problems with my iMac G5 iSight after downloading iTunes 9. After a series of freeze-ups, i noticed a visual anomaly appear on my screen. Little hash-marks all over the display were present, and playing DVDs or iTunes visualizer would result in a checkerboard pattern. After doing some research, I found out this was a logic board problem, and it was not uncommon for iMac G5s. However, I kept using my computer for a few more months when it then started freezing two minutes after boot up. I figured it was time to open up the computer and take a look. But after spending the 3.5 hours opening the machine, removing all of the cables and screws, I couldn't find any visible damage on the board. No swollen capacitors like everyone was complaining about. The only strange thing I saw was some discoloration on a few circuits near the USB and Firewire outlets.

I've decided to replace the logic board myself for around $370, and I was wondering about a few things.
1. Would the new logic board come with a processor, or would I need to pry it off of my old one, and re-attach it?

2. Would I need to go through a lot of re-programing and software issues if I replaced my logic board, or would it just start running right off the bat after replacing it?

3. Is this operation worth it? Because I have come to like my iMac after 5 years of use, and I would like to know if fixing it would give me a decent amount of usage before I would simply need to replace it

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PowerPC :: IMac G5 Won't Boot - Logic Board Error Detected

May 17, 2007

I have an imac G5 20" that is approximately two years old. About 2-3 weeks ago it started acting a bit flakey....it would lock up on std apps (firefox), it would always lock up after being revived from sleeping etc. I ran the hardware test and everything checked out. Then a few days ago it wouldn't boot. I get the chime, I hear the drive spinning, then the fans kick into high gear and I get a screen with a folder in the middle with a "question mark icon" and a "finder icon" displaying alternatively inside the folder. So I booted up the hardware test dvd and the test failed 27 seconds in with the following error code:

2GMC/2/15: built-in
Logic Board Error Detected

Are there any other steps I should be taking before taking in for service?

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IMac :: Screen Not Coming On Startup - Logic Board Dying?

Jul 8, 2010

My iMac chimes when I press the start button but the screen doesn't come on. It's making a whirring noise so it's doing something. There's a DVD in it but it won't come out when i press the eject button on my keyboard. The iMac also doesn't show up on the network of my MacBook which it usually does. I was having a few problems earlier this week with the screen doing strange things - occasionally turning off, then coming back on. It was suggested that it might be a dying logic board but I tried a Apple Hardware Test this morning but it said no problems found. I have some files backed up but desperately need to get some recent documents off it [I know, I should have backed it up more often ]. Is there any way to get access to the files on the hard disc?

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PowerPC :: Using 20" IMac G5 ISight Logic Board Unable To Power Up

Feb 25, 2010

I've got a 20" 2.1GHz iMac G5 iSight on my bench that doesn't power up.

I've tracked down the issue to a grenaded IC on the logic board.

The IC is an 8 pin SOIC chip, to the right of the power connector, just above the ALS connector. It is labeled UE300.

If you know what this guy is, can send me a good picture of one, or can provide me with the numbers from the IC, I can get this mac back to life.

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MacBook Air :: Replace Logic Board With New Nvidia Board?

Apr 17, 2009

I'm somewhat new to the forums, and found a really good deal for a brand new macbook air (rev.1). I'd like to know if it is possible to replace the logic board in my macbook air with a newer, nvidia-gfx based logic board. As in, will it fit, does the same power supply run it, same peripherals (airport, keyboard, etc) work/interface with it, etc?

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IMac PPC :: Test A G5 Logic Board Without Hardware Test?

Jun 25, 2012

My son's 17" imac PPC G5 was not booting up. After a trying a couple of things I got it to boot using Disk Warrior and reparing the file directory. At that time I also ran DW's hardware test which said the drive was fine. My son hard restarted it shortly after I fixed it and it wouldn't start up again. Just a gray screen, no apple logo. When I tried to use DW again it told me there were problems with the hard drive and it couldn't fix the problem. I tried to fix the hard drive in target disk mode using Disk Utiltiy and Drive Genius. No luck. So I pulled a working drive out of my Mac Pro and reformatted it and swapped the internal drive of the iMac with it. There were no DIP switches to set. Started up the imac with a Leopard retail disk thinking I would just install a fresh system onto the replaced internal drive of the iMac. Disk Utility on the leopard disk didn't see the hard drive. Now I'm beginning to think it's a logic board problem but I can't find the original disks to do a Hardware test with. Is there some other way to test a logic board? Or some other idea that I'm not thinking of that could be wrong with the machine?

Mac Pro, Mac OS X (10.7.4), ATI 1900, 8GbRAM

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Mac Pro :: To Get Logic Board ?

Jan 17, 2010

Anyone know where I can get it cheap ?

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Laptops :: Trying To Fix My Logic Board?

Oct 9, 2009

I have a macbook pro 17" 2.4GHz (non unibody). I accidentally applied 220 VAC to DC adaptor terminals and burned the logic board (and also the fuse on the left I/O board).

There were no visible damage on the logic board so I assumed only power input stages could have burned and started to investigate. I removed the battery charger IC, some burned mosfets; and I connected the adaptor plus input to the output of the battery charger block. So the DC/DC converters are now powered from the adapter, as in normal operation. Only difference is that there is no battery or charger stuff.

Now, when I press the power button nothing happens. If I connect the adaptor while pressing the power button, hold it for a while, release it, and press it again, it powers up. (Is this MCEverything from hdd to dvd to fans powers up but not the LCD. Fans start and remain running at full speed. Harddisk powers up but there are no noticable reads. That is, no os boot attempted. The mbp draws around 1.5 A to 1.75 A at 18.5 VDC(not sure if it indicates anything).

I'll do whatever I can to fix my board. I have MSc in electronics, skilled technician friends, and access to lots of tools, parts, and measurement devices.

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Mac Pro :: Need New Logic Board For Dual 1 Ghz MDD

Mar 6, 2007

I just got a Dual 1 Ghz MDD. It's a big step up from my 500 Mhz Sawtooth!

The problem is that it (supposedly) needs a new logic board. I've been watching logic boards on ebay, but I'm not finding anything with matching part numbers. My logic board has the following numbers:

630-4373 EEHNNW

I guess the important numbers are the 630-* numbers. Perhaps one it the
'as designed' rev part number, and one is the 'as manufactured' rev part number?

I have the dual 1 Ghz processors; would they work on a 1.25 Ghz logic board? Most of the boards I see on ebay are 820-1476-A, or 820-1308-A.
What's the difference between the 820- boards and the 630- boards?

I don't have a complete service file for the MDD; can anyone email a copy?

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OS X :: MacBook Pro Logic Board?

Sep 22, 2009

Anyway... I was planning on getting my hard drive replaced because it was making that weird noise I talked about and I still am... but. Something else happened to. My friends dog chewed my power cord (just a few bite marks) and it was enough to make the green like really dim so we unplugged it. Instead of trying to fix the cord... we just got a new one but the computer wont turn on!
The light does not turn red green or orange on the plug but the battery light blinks when I unplug the chord (the battery is dead.. all drained i mean).

Me and my mom took the computer to a store that does warranty repairs on both Macintoshes and Windows computers and they said they would replace whatever for free. Like the harddrive maybe the battery if that is what is wrong and the logic board. But well... we kind of never told them my friends dog ate my first power cord >>

I wanted to. but my mom and my friend said they wont replace it for free if we told. I sure hope there is no way they can find out of the 1000 for a new logic board is true. We dont even have that kind of money right now!

But do you think the couple seconds of not enough power from the chewed cord might have shorted out my psu or something?

Im just curious. I know my friend has a friend that took his laptop in for a similar problem... yesterday or the day before.

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OS X :: Anomalies After MBP Logic Board Replacement

Feb 21, 2010

After my MacBook Pro 2.5's logic board failed( and was replaced under AppleCare) after owning my MBP for just 17 months, activity monitor often shows asl ( system log file) manager at about 100% CPU. Fans spin at 5000rpm. Never had this issue before the logic board replacement. Also, Safari 4.04 frequently crashes; never had this issue either before, either. Occasionally, after restarting my MBP, the Apple doesn't appear on my screen but instead I get image of a folder alternating with a question mark. When trying to use installation disk to start up, under 'select the system you want to use to start up', Mac OS 10.5.8( the OS that's on my hard drive, will not show at all...it's missing. After restarting several more times with installation disk OS 10.5.8 eventually appears as a selection. Why would these issues appear only after the LB was replaced. I suspect that the replacement logic board or its installation is not 100%. Something's not quite right there.

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MacBook Pro :: Logic Board Is Broken?

Sep 1, 2010

Some of you probably will remember my post a week ago, saying that my MBP DVD drive killed my OSX Installation DVD. here is the conclusion of it, I took it authorised service center here in North Thailand. Waited for a week they sad they will change DVD drive and today it finally arrived. Around 11am they called me and said dude, we changed the drive the problem is still there cant install system. Your "Logic Board' is screwed, you have to wait at least 1 week for a new one.

Now what is logic board? Is that main board? Is it possible for computer to still work with a broken mainboard? I mean I didnt damage it, I had kernell panic and tried to re-install OSX so how could that killed my MPB? I still could boot into disk utility and format the drive was just unable to copy files.To be honest my MBP is 3 months old, i took a good care of it. And I'm very very very dissapointed in apple computers now, expensive and damn un-reliable.

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PowerPC :: G3 To G4 Logic Board Swap?

Sep 19, 2010

Would it be possible to get a logic board with a 1.33ghz or faster processor out of a 12.1" G4 and swap it in to a G3? Are the parts even compatible? I know from building engines that certain years and parts are interchangable but I don't know about computers.

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MacBook Pro :: Logic Board Need Replacing?

Oct 12, 2010

Was watching a 720p HD movie on a plane. Movie starts to freeze up. I can move the mouse but the rest of the computer is unresponsive. I force shut down by holding the power button.

Upon restart, all seems well, I login but computer quickly becomes unresponsive again. I force shut down again.

Next restart is over 10 minutes. Gets to login screen but can't login.

I boot from install disk and run HD repair. It finds some problems and repairs them. Reboot. Same symptoms.

I decided it is the HD and archive and install. Install fails. I wipe the HD cleaned and reinstall osx.

All seems fine as I go through set up and login in. A few minutes later same unresponsiveness.

So finally I did what I shouldve done awhile ago which is swap my current hd with my old one. I do and the computer runs fine! I'm at my wits end.

Just so everyone knows, the day before all these symptoms started I swapped my stock 2x1gb ram for 2x4gb ram. I originally thought that was the problem but I've had my original ram in since I've been trying to diagnose and it's made no difference.

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MacBook Pro :: Get Logic Board Replacement?

Nov 5, 2010

I have an A1260 that looks like it's undergoing the problems repaired by this program: [URL] However, I've had this thing apart, replaced the hard drive with an SSD, the optical drive bracket is very bent from when I replaced the optical drive, my display bezel is cracked in two places and held up with duct tape, and it generally looks like hell. Will they still repair the logic board despite all the other, ahem, modifications? I could probably put the original parts back in, but despite that it will be obvious I've taken it apart. It is and was out of warranty when I performed these. Should I take it to a retail store or just call Apple and ship it to them?

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PowerPC :: Way To Remov G4 MDD Logic Board

Jan 6, 2011

thread or youtube walkthrough for removing a G4 MDD dual 867 logic board? (including how to remove the CPU daughter card).I have the heat sink off and all my RAM and PCI cards out,.

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PowerPC :: IBook G3 And HD Or Logic Board

Oct 23, 2007

I'm looking fore some help/opinions on a friends iBook G3 800/30GB/256MB/10.2.8the problem is- when you press the power button, it powers on and you hear the (all is ok) chime. now sometimes it will boot perfectly fine and others you get nothing, just a blank screen.Now i know these things were notorious for logic board failure, but could this just simply be the HD, and if it is, how easy is it to change.

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PowerPC :: IBook G3 Logic Board Went Bad

Feb 29, 2008

How do I fix it? I assume the Repair program is expired, so how would I go about fixing it myself?

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PowerPC :: Used Powerbook With A New Logic Board?

Mar 6, 2008

I'm still working on this deal to buy a used 12" PB. The seller says that she just replaced the logic board, hard drive, and battery. Now, I see this as a negative. Obviously the computer was having problems, she spent a bunch of money fixing it, and is now selling it anyway. What do you think? Is it a negative that it had problems and needed to be fixed? Or is it a positive that it has a brand new logic board that will theoretically last longer than an original one?

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