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Last Post
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Sep 10, 2007 9:49 AM
by: adream608
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Posts:
4
Registered:
May 7, 2007
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G5 coolant leak repair results?
Posted:
May 11, 2007 11:18 PM
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I've seen posts about this but none have stated the results to the repair. I just had a coolant leak in my Dual 2.7 G5, which shut the computer down and wouldn't let it start back up. I took it in to the Apple store today. Anyway, I know others have had this problem. My question is, after being repaired, was the hard drive intact. I've got some things backed up but some recent projects are not yet backed up so it would really hurt my business if the hardrive were wiped. So if anyone has had this problem fixed please let me know if the hard drive was touched or just the processors etc. Thanks.
Dual 2.7 G5
Mac OS X (10.4.9)
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Posts:
13,973
From:
Ennui
Registered:
Oct 18, 2005
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Re: G5 coolant leak repair results?
Posted:
May 12, 2007 3:01 AM
in response to: lamme102
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lamme102-
Greetings and welcome to the Apple boards.
Results are mixed. If you don't have your drive backed up, or you don't want anyone snooping around in your stuff, just remove the drive before taking it in for service.
Granted, if something is also wrong with the drive they will not be able to do anything about that, but at least you will have piece of mind.
Luck-
-DaddyPaycheck
A collection of clinking, clanking caliginous junk.
Mac OS X (10.4.9)
Basement XServe, PMG5, 2x20" G5 iMacs, G4 Mini, G4's, G3's Gee Whiz
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Posts:
2
Registered:
May 25, 2007
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Re: G5 coolant leak repair results?
Posted:
May 25, 2007 4:12 AM
in response to: lamme102
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My G5 sprang a leak yesterday, 25 months old, fried the processors and power supply, and goodness knows what else. Looking on the internet it is clear that this is not an isolated incident. There is a queue for new processor units, which are unavailable at the moment. Doesn't that say something? This is a design fault. Having spent £1700 on this machine in the first place I would expect it to last more than 25 months. What are Apple going to do about it?
Defunct G5 dual 2.5 which sprang a leak Mac OS X (10.4.9) poorly designed
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Posts:
4
Registered:
May 7, 2007
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Re: G5 coolant leak repair results?
Posted:
May 25, 2007 3:30 PM
in response to: lamme102
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I took it in and it was repaired within 5 days. Processors, and power supply replaced all under apple care. Let's hope it doesn't happen again in another 2 years.
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Posts:
6,581
From:
Central WI, Oshkosh 'B Gosh
Registered:
Aug 2, 2002
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Re: G5 coolant leak repair results?
Posted:
May 25, 2007 3:57 PM
in response to: lamme102
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Your liquid-cooled PM G5 may be leaking coolant if is has this symptom. 
-Bmer
Mac Owners Support Group
Join Us @ MacOSG.com
iTunes: MacOSG Podcast
An Apple User Group 
Core 2 Duo MacBook Pro • 120GB HD • 2GB RAM
Mac OS X (10.4.9)
60G Photo iPod • AppleCare
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Posts:
1,888
Registered:
Jul 9, 2003
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Re: G5 coolant leak repair results?
Posted:
May 26, 2007 9:28 AM
in response to: Mac Medic (be@M...
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Humorus, but coolant is usually tinted red or yellow-green.
If it's pre intel I've got it.
Mac OS X (10.4.9)
Chimeras All
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Posts:
36
Registered:
May 20, 2003
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Re: G5 coolant leak repair results?
Posted:
Jun 14, 2007 12:31 PM
in response to: satr
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We have three G5 2.5 Ghz. One sprang a leak on Tuesday. Has certainly blown the PSU - but what else we will find out when the apple service centre call back in the next couple of days with a diagnostics.
Be interested to see if Apple are offering a goodwill extended cover on this problem as have seen posts to this end.
Any comments or tips welcome.
Imac G5 20
Mac OS X (10.3.6)
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Posts:
2
Registered:
Mar 10, 2005
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Re: G5 coolant leak repair results?
Posted:
Jun 20, 2007 8:24 AM
in response to: lamme102
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I've had three machines, out of a lab of 20, experience this problem within the last six weeks. The first spent 4 weeks out for repair (motherboard, CPU, power supply), worked for two days, then died. It's back in for repair. The other two went for repair yesterday. One died overnight on Monday, and a cursory inspection turned up another that, while still working, had corrosion on the inside of the case, and coolant under the machine when it was moved. Luckily, we have an on-campus repair facility.
All 20 were purchased in the summer of 2007, the 2.7 GHz model. 15% failure rate so far. I have a few more machines left to open and inspect, and I'll have to keep a close eye on the rest of these. I am also looking at serial numbers, to see if I can find a pattern, and maybe predict which machines may fail in the future. This is a nasty problem when it occurs.
PowerMac G4/733
Mac OS X (10.4.8)
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Posts:
30
Registered:
Sep 16, 2005
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Re: G5 coolant leak repair results?
Posted:
Jun 20, 2007 10:31 AM
in response to: Jennifer Nieland
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We also have a series of G5s (dual 2.3 GHz, purchased May 2005) dying one by one it seems, due to leaking coolant.
We think we have a third one that died yesterday; have to get to the location and inspect it. Fairly certain it did the same thing as the other two; overheated, shut off, and now we can't reach it via ping or remote desktop.
There's a fourth suspected one as well, showing the same pattern of symptoms before failure.
All of them have this serial # range:
G8517Axxxxx
We own several other liquid cooled G5's (late 2005), but so far it just seems to be this particular range of serial #'s.
This really should be an official recall, as it's very outside normal/expected failure rates.
G5 Dual 2.3 GHz Mac OS X (10.4.9)
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Posts:
4,704
From:
SF Bay Area
Registered:
May 3, 2004
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Re: G5 coolant leak repair results?
Posted:
Jun 21, 2007 6:52 AM
in response to: Sheri Nikishin
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From what I can tell, liquid cooling on PowerMac G5 was only on the first dual 2.5Ghz, the dual 2.7Ghz, and the Quad 2.5Ghz.
I've got a Quad G5 which hasn't had the problem, but I'm looking to sell it, since I don't want to be responsible for it after AppleCare expires in Feb. 2009... In my opinion, the design is flawed for several reasons:
- leaking should ideally be incredibly rare, and I don't think it is
- provision should have been made to isolate the effects of a leak. Destruction of CPUs, logic board and power supply seems common in cases of coolant leakage.
In other words, overall, the system is too fragile. I want an air-cooled Xeon.
I'm curious about exactly where the leaks are developing, and if there might be a proactive way to upgrade the cooling system, such as better hoses and clamps, or if the leaks are developing in the pumps or metal parts of the cooling radiators.
Quad G5, PB 15" 1.5Ghz,MacBook 2.0GhzCore2Duo
Mac OS X (10.4.8)
MacBookPro 2.33Ghz C2Duo/120G/2G RAM, Logic Pro 7.2.3, Focusrite Saffire...
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Posts:
25,081
Registered:
Dec 12, 2001
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Re: G5 coolant leak repair results?
Posted:
Jun 21, 2007 7:16 AM
in response to: Jennifer Nieland
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All 20 were purchased in the summer of 2007, the 2.7 GHz model.
must be why :-))
Someone mentioned that the 2.7DPs could have two different coolant designs.
Whether due to availability of parts or testing, or to try a different design.
Mac Pro 2GHz 4GB 10K Raptor RAID Cinema HD
Mac OS X (10.4.9)
WD RE RAID Aaxeon FW800 PCIe Sonnet Tempo APC RS1500 Vista
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Posts:
1,285
From:
Midwest
Registered:
Sep 15, 2000
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Re: G5 coolant leak repair results?
Posted:
Jun 21, 2007 7:31 AM
in response to: tele_player
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"- leaking should ideally be incredibly rare, and I don't think it is"
You have no basis on which to make that claim.
Dual 2.5GHz G5 Power Macintosh
Mac OS X (10.4.9)
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Posts:
4,704
From:
SF Bay Area
Registered:
May 3, 2004
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Re: G5 coolant leak repair results?
Posted:
Jun 21, 2007 8:20 AM
in response to: lkrupp
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"- leaking should ideally be incredibly rare, and I
don't think it is"
You have no basis on which to make that claim.
I wasn't being very specific, but I'll stick to my statement - I don't think these leaks are incredibly rare. Incredibly rare, to me, would be... maybe, one report of a leak on this forum in the three years since liquid cooling was introduced on the G5, and everybody else saying "wow, I've never heard of that before!" That's definitely not the case.
But, yes, I don't have anything like a failures/units percentage.
Quad G5, PB 15" 1.5Ghz,MacBook 2.0GhzCore2Duo
Mac OS X (10.4.8)
MacBookPro 2.33Ghz C2Duo/120G/2G RAM, Logic Pro 7.2.3, Focusrite Saffire...
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Posts:
1,563
From:
Dorset, UK
Registered:
Apr 3, 2003
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Re: G5 coolant leak repair results?
Posted:
Jun 21, 2007 3:03 PM
in response to: lamme102
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I hope I'm wrong, but in years to come when people look back on the G5 era, I can't help but feel the liquid cooled models will be viewed as a bit of a mistake. Perhaps even as a slightly desperate and ultimately futile (although totally understandable) attempt to keep the PowerPC based Macs ahead of the competition. I've no idea what the failure rate is, but I wouldn't be surprised if a certain small percentage of failures are expected, and it's actually cheaper to pay the cost in terms of AppleCare claims and disgruntled customers than it is to try and make it 100% fail proof.
PM G4 QS 1GHz DP, ATI 9600, 1GB RAM, WD Raptors, 23" ACD
Mac OS X (10.4.9)
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Posts:
4,704
From:
SF Bay Area
Registered:
May 3, 2004
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Re: G5 coolant leak repair results?
Posted:
Jun 21, 2007 5:53 PM
in response to: Rodney Culling
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I hope I'm wrong, but in years to come when people
look back on the G5 era, I can't help but feel the
liquid cooled models will be viewed as a bit of a
mistake. Perhaps even as a slightly desperate and
ultimately futile (although totally understandable)
attempt to keep the PowerPC based Macs ahead of the
competition. I've no idea what the failure rate is,
but I wouldn't be surprised if a certain small
percentage of failures are expected, and it's
actually cheaper to pay the cost in terms of
AppleCare claims and disgruntled customers than it is
to try and make it 100% fail proof.
That's pretty much how I see it.
They might all be doomed to failure, maybe mostly after AppleCare expires.
Quad G5, PB 15" 1.5Ghz,MacBook 2.0GhzCore2Duo
Mac OS X (10.4.8)
MacBookPro 2.33Ghz C2Duo/120G/2G RAM, Logic Pro 7.2.3, Focusrite Saffire...
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