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New logic board for older G5 iMacs with bad capacitors Desktop Macs
Not so much a hint, but a suggestion which hopefully will help someone else. My iMac G5 (1.8 GHz, 2005 model) started having frequent kernel panics which I quickly realized was hardware related, as it persisted when booted from an external drive. When I opened the machine, I saw the dreaded bulging capacitors.

This was a known issue with a defect in the manufacturing of these capacitors, and Apple had a program to replace the motherboards when the capacitors failed. As I learned when I called the Apple rep, the program just ended in January and there was "nothing to be done." As I explained to the rep, I was being penalized for my machine lasting a bit longer than others, which made no sense. In fact, since there was no recall issued, I couldn't get my machine repaired before it failed, so Apple really had no choice in my opinion but to replace the defective motherboards. The rep agreed, and set up an appointment for my free replacement.

Hope this helps someone else who machine fails in the near future.
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New logic board for older G5 iMacs with bad capacitors | 34 comments | Create New Account
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New logic board for older G5 iMacs with bad capacitors
Authored by: aquarajustin on Mar 17, '09 07:53:15AM

Glad to hear that it worked out for you. I purchased one of these off of eBay (knowing about the program) and got it replaced before the cutoff date. It works great now. If only I could quiet the fan down...



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New logic board for older G5 iMacs with bad capacitors
Authored by: neuralstatic on Mar 17, '09 08:44:47AM

mileage will definitely vary from phone rep to phone rep, genius to genius, and store to store. repeated attempts might be helpful.

i've been able to solder in some bad cap replacements using some good online guides, but that hasn't been 100%



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New logic board for older G5 iMacs with bad capacitors
Authored by: Anonymous on Mar 19, '09 11:43:35AM

What do you mean, "not been 100%"? Do you mean you weren't able to complete the job? Were you unable to source equivalent capacitors? Or after replacing them with the correct value components, did it still not work correctly?

Please don't talk like the BBC -- we like the nitty gritty here.



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New logic board for older G5 iMacs with bad capacitors
Authored by: kjester on Mar 17, '09 09:07:12AM

AppleCare just covered one for me with the same issue (they previously denied this about 2 months ago).

Thanks for the new way to explain their failure here. Worked like a charm. Maybe they'll just extend the Repair Program if enough people are still experiencing the issue.



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New logic board for older G5 iMacs with bad capacitors
Authored by: piyayo on Mar 17, '09 03:16:22PM

Congrats and well done. Reminding them of the 2004 iMac G5 30% failure rate might have also worked, because of not only the bad capacitor plague but other various issues. I had a link to an article bt can't find it now....

I have a 2004 iMac G5 and it's still going strong with zero point zero issues- but I have seen a few go bad over the years. Makes me feel like I won the lottery sometimes.



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New logic board for older G5 iMacs with bad capacitors
Authored by: rycardo on Mar 18, '09 08:29:38AM

zero-point-zero: nice!

I wonder how many people get that.



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New logic board for older G5 iMacs with bad capacitors
Authored by: audiophil on Mar 17, '09 03:36:28PM

I have been replacing caps on those boards for a while now. Seems that 4 out of 5 are fixed simply by replacing the caps. One should really have to replace the whole burned out bank (not just the individual cap that is oozing.) It seems that depending on what caps are going; the power supply can be damaged by the failure as well sometimes (or was contributing to the cause of the rupturing) I'm not really sure. maybe 1 in 4 of the units with burned caps need a new power supply; Some of these are the QM4/QM7 that was originally covered under the replacement programs apple have; sometimes the burned out power supply is the newer model. Sometimes the power supply works but is humming terribly. I've seen others go into it in detail on the net. Apparently the failing caps can damage the regulators or rectifiers somesuch; not sure on details.

It does require a soldering gun capable of getting up in the 900F degree range; the factory solder is fairly high-temp; your standard hakko or chicago electric cheapo soldering station can get *just* hot enough.



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New logic board for older G5 iMacs with bad capacitors
Authored by: whatelse on Mar 18, '09 02:14:40PM

Hi!

YES WE CAN !!

I repare myself the logic board for older G5 iMacs.
I make this reparaton because Apple change the logic board for 900€

The most difficult is to find a specific capacitor used in your G5 iMacs.

After patience and thoroughness give a good result.

A second life for you favorite computer.

;-)



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New logic board for older G5 iMacs with bad capacitors
Authored by: Anonymous on Mar 19, '09 11:46:04AM

Pah. Just them them you smelt burning and saw smoke and sparks. They have a special helldesk script to follow for danger of death.



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Final Note
Authored by: rbenezra on Mar 25, '09 08:04:44PM

Apple did the repair in a weeks time, free of charge (new logic board, new power supply) and the machine is like new (well... a little out of date but still a solid machine for home use). Good luck to any others with the same problem.



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New logic board for older G5 iMacs with bad capacitors
Authored by: sokobi on Mar 26, '09 03:43:26PM

I also have been included in the extended repair program despite it had expired in December 08 as they told me. Mentioning this article may have done the trick for me, who knows. Anyway, they were very polite and didn't argue. (Apple Australia)



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New logic board for older G5 iMacs with bad capacitors
Authored by: swedane on Apr 18, '09 03:50:59PM

This, I'm sure, is exactly what's wrong with my iMac G5, 2 GHz 2005 model.
In 2007 -and still under warranty- I had the power supply replaced.
All was well up until a couple of month ago. When the screen, for no good reason, would go black, soon returning to normal, then go black again.
This happens only when I watch videos online or play online shockwave games, e.g., jigsaw puzzles.

I will take my iMac apart and see if the problem is bulging capacitors. If so I'll take it to our local Apple rep, and report back here.

Thanks so much for making your experience public!



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New logic board for older G5 iMacs with bad capacitors
Authored by: joandoinjapan on Apr 23, '09 11:07:38PM

I am in Japan and my G5 just crashed with a defective logic board. They will not cover me on the extended warranty and will not replace my logic board. You're lucky that they did it for you.

This is clearly a defective product and should be recalled. A simple google search of "logic board, apple, defective" proves how common this issue is. I have no choice but to pay for this repair and to boot I have to wait for over a week to get it done. I need this computer for work and I'm stuck as a result of this. This is really frustrating and Apple is not budging on the warranty of this clearly defective product.

A very unsatisfied Apple user!

This should be recalled!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



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New logic board for older G5 iMacs with bad capacitors
Authored by: Miger97 on Jun 29, '09 12:03:23PM

I am in Canada and logic board finally gave up; video is garbled and I see some bulging on one of the capacitors.
Apple refuse to repair it claiming that the extended repair program was only for period of 3-years after purchase. Wonder if anyone managed to get under that program after more than 3 years ? What else can I do to make them fix their own mess.



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New logic board for older G5 iMacs with bad capacitors
Authored by: vilmosz on Sep 01, '09 09:06:34PM

I have had this issue on our 2005 iMac. Finally took it in last May 2008 to the Genius Bar, but they only replaced the power source, claiming the logic board didn't need to be replaced. The machine continued to steadily degrade and then became unbootable last week. Geniuses said the issue was the hard drive, which I paid them to replace (parts only) but insisted they also replace the logic board as I know the machine will once again spiral downward. They say they have run all tests and the logic board passes the tests as not being defective, but I am skeptical. I will go back down there tomorrow, but I will refuse delivery when I have good reason to suspect this issue will crop up again. I will take a copy of this post with me and let you all know how it goes.



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New logic board for older G5 iMacs with bad capacitors
Authored by: guyfawkes on Oct 26, '09 03:16:05PM

My first generation 2004 Imac G5 finally started to have problems. It now boots up to a blank screen. And the fan is extremely loud. Could this be the logic board??? I called applecare inquiring to get it replaced. They said mine was covered until they looked at my serial numbers, at which point they said its not covered because there were only certain imac's ending in a certain serial number sequence that were covered. because they found these to be more problem prone. Anyone else come across this issue. Any tips on getting around this?? thanks!



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2.0 G5 DP Fired Logic Board
Authored by: MichaelP on Nov 26, '09 10:40:49PM

You may find this interesting:
My G5 DP bit the dust. Began with the fans running in overdrive where it would not respond to key commands. Always had to hard restart. Then the computer froze two days ago. On restart, the USB ports were toast.

Called Apple, rep tells me to restart and see what happens. Duh!!! I only tried that 30 times. He tells me to go to the genius bar.

Took it to the Genius Bar, the logic board is fried - $1652 to fix. I asked the tech about my findings online of a huge amount of logic board failures. His response with a massive grin on his face, "Welllllll I have seen a few!"

I called Apple, they of course deny a hardware defect and say "hey it's an electronic" yet offered me a whopping $150 credit towards a new machine. WTF? If there is no defect and I have no warranty, why then offer me anything. Did Apple feel bad about the death of my computer? I commented that my trusty G4 300 from 1999 with 7 over writen OS' still runs strong, yet "The worlds fastest super computer" bites the dust in 5 years. Somethings fishy!

I guess economic scale doesn't matter to Mr.Jobs I rely on Apple to make money, Apple relies on me to buy new products to boost their stock prices. I am now very skeptical about the quality of Apples new line.



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New logic board for older G5 iMacs with bad capacitors
Authored by: ChicagoOutfit on Jan 25, '10 04:36:15PM

I just wanted to chime in that my First Generation 17-inch iMac G5 gave out a month or so ago (as in, not turning "on" whatsoever)... and that I opened it up to find that it exhibited the issues surrounding "bulging capacitors" (complete with a yellowish substance creeping out of the tops of some of them).

With that knowledge, I called U.S. iPod and Mac technical support at 1-800-APL-CARE (1-800-275-2273) and told them about my iMac G5's issue. I wasn't irate or anything; I just explained (as mentioned above in the original hint) that I felt like I'd been penalized for my machine lasting longer than the ones that had their problem surface during the extended warranty period.

It was actually a very pleasant conversation and they set me up as an "exception" to the extended warranty expiring and covered parts and labor.

So... just sharing that Apple is still taking care of these issues.



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New logic board for older G5 iMacs with bad capacitors
Authored by: jugganaut on Feb 03, '10 11:16:29AM

Thought I would chime in as well. Saw the last post and decided to give it a shot. Took my ALS 20" iMac into the Apple Store and talked with a rep there. It took a little convincing and pleading, but he eventually did agree with me and went ahead and comped the logic board and labor. I did mention that other people had been granted exceptions and that I felt like I was being penalized for Apple's defective manufacturing process.

At first he said there probably wasn't a whole lot that he would be able to do, and at first gave the price of the new logic board and said they would comp the labor. I just shook my head and explained that the computer itself wasn't worth that of a new logic board and at that point mentioned about the website.

He went back to his computer and was typing intently for a few minutes and then said that he could do it.

That was yesterday, Feb. 2nd 2010. I think that they're policy is probably if customers continue to pester the reps, they just go ahead and comp it...



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New logic board for older G5 iMacs with bad capacitors
Authored by: peachycream on Feb 15, '10 01:14:41PM

I've been reading people's relatively easy experiences getting help from Apple, and I wish I had the same! My iMac 20-inch G5 cut out yesterday--just shut off as if the power had gone out. I've been resetting the SMU externally and internally both, no luck. There's an initial little sigh when I press the power-on button, then nothing at all except LED 1 lights up.

I called tech support this morning and spoke to customer relations this afternoon. The CR person was adamant that Apple "didn't have the parts" to fix this. How can this be? I made my case for wanting to stay a loyal Apple customer if she would only help the cause a bit. No dice!

Three years ago, when the fan was speeding non-stop and the machine was emitting the smell of burning rubber, Apple did cover the replacement of the logic board. Twice, because the first one didn't take. They may have replaced the power supply then, too.

Any ideas, short of taking the machine in for service? Do you think the fix could be as simple as replacing the PRAM battery?



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New logic board for older G5 iMacs with bad capacitors
Authored by: gigimorphe on Feb 23, '10 09:39:20AM

there is not just caps problem.the main failure is the low level engineering.no good surge protection low caps on the psu too much heat.
usually these caps r designed till 6.3v and if they blow they having trough fet regulator over 6v may 12V peak.this can cause damage on some ics
all component r rohs (lead free) the soldering quality r rubbish same as dell hp toshiba sony nec advent gateway.
mainly its all about luck with these shocked logic boards.
i doing my job now 17 year and i can tell you the quality of component level engineering going down.i dont understand how some companies survive with all they rubbish.
i believe one day this gonna knock down some companies.
we cannot make crap and sale like gold all the time :-))

about parts: if you strugling to get caps you can try www.tme.eu i think 100 capacitors 1600uf 6.3v cost round 3 or 4 plus shipping.the price depend on size if i gonna fit i will fit 2200uF insted of 1600uf this save more power on the logic board
dont forgot the melting point of solder is 200C and rohs (lead free)is above 220C you have to use esd mat with wrist strap also multicore flux.but carefull with this flux (cancer) extractor neded.same as when you working on bga machine.then pcb flux cleaner and pcb lacquer and you done after replace you can have 3 beeps failure mean ram bank not passed the test.if you have good eye and no shaky hands
from too much pint then you can continue to find out and replace the ram ics
hope this help to someone
if you have any question please feel free to ask for any brands
regards
gilbert



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New logic board for older G5 iMacs with bad capacitors
Authored by: dmr on Feb 27, '10 03:44:53PM

See http://www.badcaps.net/ for a guy who has made an entire business just replacing bad capacitors in many different vendors' computers (including G5 iMacs). He sells sets of capacitors for you to replace yourself and he has a repair service where you send him the logic board and he will replace the capacitors and return it to you. Disclaimer: I haven't used him myself.



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New logic board for older G5 iMacs with bad capacitors
Authored by: gigimorphe on Feb 27, '10 06:28:52PM

my friend i am experienced engineer i have all equipment and knowledge to replace components on the mother boards.i am not a beginner.
i dont have to order those capacitors that site r expensive they selling kit for 22 usd kit contain max 10 capacitors i can order from tme.eu 100 for 10 usd.pointless to go backwards.
but anyway thank you for the attention.my post was about quality no about business.i try to explain to people the fact about cooked board if caps fail mean instead of 5v you got over some ttl and cmos r sensitive on high voltage.
personally i dont trust main power i have racmount ups generator and i filtering the power from mains for my self this keep longer life to any device.of corse with changed caps but on the begining when the device was purchased.when i buy product i always double check how they made and what they done..
regards
gigi



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New logic board for older G5 iMacs with bad capacitors
Authored by: macsince84 on Mar 08, '10 01:06:50PM

I have a first gen g5 17 inch that I was having problems with for the last year and a half. already replaced the power supply and just last week it started shutting off by itself and now will no longer power up. Pulled the back off and found what all the other sites are saying. Bad capacitors, about 6 are bulging and 2 are leaking.
So I took the advice of the earlier posts and call apple care, 1-800-275-2273 and they set me up with an appointment at a local authorized service rep. Before I hung up, I asked the girl about the know mother board issue and whether mine would still be covered. She put me on hold for a few minutes and came back stating that there was an extension to the apple repair plan that was put into place to cover this issue. She said once the tech confirmed the hardware issue (which is obvious just by looking at it) that apple would cover parts and labor to replace the mother board. She also gave me the case number in case the repair rep had any issues comping the repair. Food for thought, it does not hurt to call. let you know how my appointment goes.



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New logic board for older G5 iMacs with bad capacitors
Authored by: TonyLIFE on Mar 15, '10 01:49:41PM

Okay, I tried this today (March 15, 2010). I have a first generation 17" iMac G5. I called the AppleCare number listed in the previous postings. I spoke with a Tyson about my machine's shut-down problem. He told me I would have to take my machine to an Apple Authorized Service Center to get it checked and gave me a phone number. When I mentioned that there was an Apple program to replace bad logic boards due to bad capicitors, he told me he know nothing about it. He excused himself for a couple of minutes and came back telling me he had found the repair program to which I was referring, but that it had ended on December 15th, 2008. I asked if it had been extended. He saw nothing on his screen indicating that. I asked if there was another person to whom I could speak that might be able to authorize the logic board replacement. He got Sean on the phone from tier 2 support. Sean told me my machine was out of warranty and nothing could be done - any repairs would be billable. I told him I wasn't asking for a warranty repair - I was asking about Apple's logic board replacement program - whether there was an extension to the program which ran through 2008. He insisted that the machine could not be repaired since it was more than 3 years from date of purchase and was out of warranty. I even mentioned the posts on this web site. All I kept getting back was that a 5 year old machine had served its useful life and there was nothing that could be done. Eventually he just said good-bye and hung up. I am a Mac guy, so I'll stick with the product... it's just instances like this that really leave a bad taste in one's mouth. Some people have had success calling Apple for this repair - it's obviously a matter of luck with whom you speak whether you get a warranty repair or get hung up on... their policy should be consistent!!!



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New logic board for older G5 iMacs with bad capacitors
Authored by: macsince84 on Mar 26, '10 07:11:29AM

Hey Tony, sorry you didn't have the same type of luck. As it turns out, when I brought my mac to the mac store, they did confirm with out and questions that it was the logic board, due to about 5 blown caps on the capacitors and 3 that were leaking. when they started talking prices, I told them what apple care had told me about the extended replacement program. he questioned it and told me that it had ended about a year ago. he checked the ticket that apple care had opened and it was indeed stated that the repair would be covered if the problem was confirmed. He spoke to his manager about it and she didn't even hesitate, stating if thats what they said then we will repair it at no cost.
It may not hurt to fight it a little more. Someone else on here made a good point and you should tell apple this.
"Why is it your fault that your Mac lasted longer than some others?"
"There was no recall, so you had no way of knowing that there was an issue" How could you have participated in the program if there was no issues with you mac at that time"
Its all worth a try. there are ppl out there that will repair the logic board for a fee, might me cheaper than what mac charges.
Best of Luck



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New logic board for older G5 iMacs with bad capacitors
Authored by: FrankRicho on Apr 21, '10 07:39:26AM

I just called today and got the same response Tony got. "This is a 5-year old computer. The warranty has ended. The replacement program has ended. You can pay for repair or buy a new computer."
The good news is, I went to my local Apple Store and got them to agree to drop the labor charges. But they still want $450 for a new logic board.

My feeling is this: Yes the warranty has ended and realistically a company can't be expected to cover ALL their computers FOREVER. However, Apple should have issued a recall on these computers. I shouldn't be punished because my logic board lasted 5 years instead of 3.

I'm not going to give up yet. I would like to try to call customer service, public relations or any other department at Apple that might listen to me.



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New logic board for older G5 iMacs with bad capacitors
Authored by: tingler on Mar 24, '10 08:19:13PM

hey guys!

this post has really helped me out allot! i have a imac G5 20'' and it just started powering down for no reason. so when i found this post and
maybe just maybe if i beg enough i will be able to get it fix just made my day. im going to give apple a call tomorrow and ill let you guys know how it goes.


thanks allot guys!!!



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New logic board for older G5 iMacs with bad capacitors
Authored by: j4ym0n on May 08, '10 05:57:52AM

Here's a new scenario for you: 17in G5 iMac - Logic board replaced and covered under the extended warranty. It happened to fail a few weeks before the 3 year period ran out luckily and Apple took care of it with no problem. The iMac ran fine up until a couple of weeks ago and then it wouldn't boot - grey screen of death. I opened up the back of the iMac and I can see bulging/leaking capacitors. These are the "new" style capacitors (they have a K on the top). So the motherboard was replaced, but now the new motherboard with new/different caps has the exact same issue. I took it to a Mac Genius and he told me that it can't be covered as they only offer a 90 day warranty on replaced items. I am going to call Apple Care today and see what they have to say.



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New logic board for older G5 iMacs with bad capacitors
Authored by: ccallens on Jun 13, '10 09:23:36PM

Any luck with getting Apple to replace your board? They've replaced mine 5 times in the past, and it just blew two capacitors again. The last time, it was past the extended period and they said that they would not replace it again for free. This is absurd. I'm convinced that they keep replacing the parts with others that were made from the same stock of bad caps.



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New logic board for older G5 iMacs with bad capacitors
Authored by: ibrokeit on Jul 08, '10 02:23:08PM

Today (07/08/2010) they wouldn't help me.

I used my best sincere "I really need your help" tone of voice and talked to the representative and his supervisor. They both used their best sincere "I really wish I could help" tone while they sent me on my way with no help.

Good luck to anyone else trying.



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New logic board for older G5 iMacs with bad capacitors
Authored by: wenling85 on Jul 08, '10 11:11:11PM

Thanks, this helps me a lot. Bookmarked it.



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New logic board for older G5 iMacs with bad capacitors
Authored by: acr8tv1 on Jul 21, '10 11:24:40PM

Had the same problem - Apple store replaced the logic board September of 08 - Bought the 17" imac g5 in March of 05. It suddenly stopped working on July 5th 2010. Took it to the same apple store and they wouldn't touch it - but said it was probably a faulty power supply. Beacause of the age of the computer they couldn't order the part even if that was the problem. Took it to an authorized Apple repair place...they took two weeks to get back to me and then only when I showed up in the store. They supposedly had it open in back and it appeared to be the power supply...I figured a few hundred bucks. i get home and they call and tell me the logic board is shot ! $743!!! That logic board is only two years old....I'm going to be a nuisance and see if that gets me any place. The arrogance of apple is starting to grate.



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New logic board for older G5 iMacs with bad capacitors
Authored by: lewigr on Mar 06, '11 07:50:35AM

I am experiencing the problems mentioned here (it's taken another 2+ years for my machine to start dieing). I have access to other G5 logic boards that seem to have good capacitors, but I'm not sure how to determine compatibility with my iMac. Once I determine compatability, can the logic board from a compatible G5 simply be swapped or are there other considerations?



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