G5 2.7ghz Dual, Leak liquid cooling system:

Hi, my beloved G5 2.7ghz is down, it still powers up but nothing on screen, I need to get this one fixed, Macmedic in Sydney have advised they cannot do anything, has any other user experienced this issue, is there any advice for me? It seems that the liquid cooling system on the processor leaked and damaged the board and power supply. I wonder if it is still safe to operate, and i desperately need to get it repaired as cannot afford another one for my studies! Please advise if anyone had this issue resolved and how.. Thanks!

Hi-
I wonder if it is still safe to operate
No, it is not.
The machine is a fire hazard.
Sorry to say but hundred's of people have experienced what you have.
Repairs can be made, but, typically, logic board, CPUs and PSU need replaced.
Start your research here:
http://www.xlr8yourmac.com/systems/G5_coolant_leaks.html
http://www.xlr8yourmac.com/systems/G5_CoolantLeak_Repair/G5_CoolantLeak_Repair_p 1.html
http://www.macintouch.com/readerreports/powermacg5/topic4243.html
For likely much less than the cost of repairs, you can buy a Mac Mini that is pretty much more capable than the G5.

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G5 Quad: Liquid cooling system ok?

Do the liquid-cooling systems in the Quad G5 work ok? Have there been any reports of them leaking?

You see there was this LOUD BANG, followed by a pop
noise. So this guy opens up the side of his Quad and
see's the cover to his processors is a bit loose. He
removes the cover and next thing he's covered in this
green burning acid and it's melting his eyeballs and
everything.
Sorry couldn't resist. :P
Here is how you can test for leaks.
-Bmer
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Dual-Core Power Mac G5 • 2.5GB RAM Mac OS X (10.4.6) 10,000RPM Boot HD • 60G Photo iPod • AppleCare

Powermac g5 leaking liquid cooling

Hello Powermaccers
I like this machine very much, but i noticed some white stuff under my liquid cooling system.
Images:
http://oi62.tinypic.com/35lapf9.jpg
http://oi57.tinypic.com/2zxurde.jpg
Btw, the mac doesnt boot up, hangs on apple screen, the Pram battery is dead an i took it out.
Ram is all right, i tested ram in my G4, Can it be the leaking on motherboard or the powersupply?
Thanks for any answers

Hello Langoor,
Oh yes, that is a big problem...
http://www.xlr8yourmac.com/systems/G5_CoolantLeak_Repair/G5_CoolantLeak_Repair_p 1.html
http://www.xlr8yourmac.com/systems/G5_CoolantLeak_Repair/G5_CoolantLeak_Repair.h tml

Noisy liquid cooling system

I have an HP Pavilon Phoenix with liquid cooling. The fan has become very noisy. After 2 hours with support today to find the noise, we found where it was coming from. They gave me a part number 657398-004 or 657398-003. This part is not in stock and they had no idea when it would be available. A google search turned up one part supplier but this part is discontinued. My question is does anyone know of a compatible liquid cooling system that I could use to replace the defective one?
This question was solved.
View Solution.

Thank you Photoray002. I am not really comfortable pulling a fan like this and lubricating. What I was hoping to do was get a part number to order a new liquid cooling system and have it installed. I will probably have the installer attempt to find and install a liquid cooling system if your suggestion does not solve the problem. I am a little annoyed that HP does not have the part in stock and they have no idea when if ever it will be received. Initally they were going to have me send my tower for repair. Who knows how long it would have taken to fix.
Thanks again,
731coach

Is it possible to externally liquid cool an iMac by taping a liquid cooling system on it's back ?

I wonder if it's possible to tape a liquid cooling system on the back of your iMac .

I just wanted to buy an external liquid cooling system and stick it to the back of my iMac using sticky tape and connect the cooling system to the wall outlet , I mean I wasn't going to open up my Mac ...
If you've done what I said or have heard about such a mod can you please tell me what happened to the computer ?
IF YOU HAD A NEGATIVE RESULT PLEASE TELL ME ABOUT IT ...
shldr2thewheel wrote:
Don't do that.

G5 2.5 to 2.0 conversion to remove liquid cooling system

I've had a g5 2.5 with liquid cooling working well for a while now, but now doesn't boot into OSX. So I found the problem being a blockage in the LCS. While taking a part the death cooling unit I accidentally broke one of the cooling blocks and I've already tried everything from high end epoxy to jb weld to fix it with no luck. Looked into replacing it with another comp or parts and it just seems to expensive to replace just for one cooling block. So hear is my question, is it possible to replace the 2.5 g5 with a 2.0? I have the dual 2.5 from 2004 and wondered if the logic board is able to work with the 2.0 from 2004? I like the 2.0 g5 because it has no LCS, just heatsinks or could I use the heatsinks from the 2.0 on a 2.5? I really love my g5 and don't want to scrap it just yet.

Hello,
Sorry to hear this, but did you try Amazon or eBay yet? You should look into it. You might be able to find someone with a busted leaking cooling system, but the block is still good. =) Wish you luck.
Regards.

Liquid Cooling System diagnostic tools?

QUESTIONS:
Are there any software diagnostics for the Quad G5 LCS?
Can I download and run them myself instead of packing up my desktop and bringing it in to a repair center?
What are normal temperatures for the CPU Core Diodes?
Is there a tool to monitor fan speeds, similar to the tools for monitoring temperature sensors?
SYMPTOMS: CPU fans run much louder than ever before, but still blow cool air out the back. Activity Monitor shows that very little CPU activity is occurring, yet the fans are running higher speeds. Temperature Monitor shows CPU Core Diode temperatures that are lower than the Graphics processor chip. There is a correlation between temp and speed, but the cooling system seem to be overcompensating. Upon rebooting, the fans start out very quiet, like they used to be all the time, then very slowly rise in speed and decibels. Running on Dual CPU (via CHUD) typically runs cooler than Quad CPU mode.
PREVIOUSLY: For three years, this was a very quiet computer. The fans were only audible when the CPUs were obviously tied up near 100%. The exhaust air felt warm, usually, even when the speed was low (now the exhaust seems cooler). EyeTV did recently cause the system to run at high CPU percentages for extended period, which understandably increased the fan noise, but I keep an eye on that now and quit EyeTV whenever it uses too much CPU.
TESTS:
I have booted from the OSX install disc, and the fans are nearly silent in this mode.
I have run the hardware diagnostics that came with the computer, but they run the fans on full and don't seem to test the cooling system.
I have purchased a new main drive and reinstalled 10.4.11 from scratch, and the problem persists (although it does seem to have improved).
Dust was not excessive, but it was very fine, and I have blown some of it out.
In closing, I would like to use some sort of diagnostics to narrow this down, and hopefully determine whether the sensors, liquid coolant, main board controller, or software is bad. I might be able to purchase a replacement LCS, but that would be a waste if it is actually some other system which is failing. I realize that Apple does not typically offer internal diagnostic tools for outside use, but I am highly skilled in electronic design, firmware, and software.

I believe that I've finally solved this. In another topic on this forum, I asked which Apple Service Diagnostic was appropriate for the Quad, and discovered that it's ASD 2.6.3, which took a while to obtain. Strangely, the first Thermal Calibration run did not finish, even after waiting the 10 to 30 minutes that was predicted. I restarted the machine and tested all of the sensors and fans, plus a few systems which seemed related (but I did not take the time to run every test). After this, the Thermal Calibration ran to completion, but failed, claiming that the temperature exceeded the limit, and suggested that I reseat the processor. I actually decided to wait and do that later, and now that I've rebooted my machine it's drastically quieter without any further monkeying around inside.
The loudest fan was running between 2,820 RPM and 3,600 RPM, with another pairs of fans running between 2,350 RPM and 3,100 or 3,200 RPM ... all of them often getting stuck at their maximums sometimes, especially after heavy loads. Now, those fans are at 1,800 RPM to 2,350 RPM, and 1,600 RPM to 2,000 RPM, respectively. Obviously well below the bothersome range! I still have to see what happens when I really exercise the machine, but I can always run the Thermal Calibration again to see if it still fails, assuming I have any more problems, and go from there.
I'm actually quite happy that I did not have to take my machine in, with all the extra worries that entails. I've been a Premier Member of the Apple Developer Connection from time to time over the decades, and have purchased nearly all of my 9 Mac on Hardware Discount, which means I usually got these ASD discs in the mail for free. Unfortunately, I let my membership lapse before I purchased the Quad new after Apple had discontinued it, but while retailers still had stock. Things would have been so much easier if ASD 2.6.3 was already in my collection, but at least now I have it!

Liquid cooled G5 issue

I have a dual 2.5ghz G5 Power Mac which recently started to make a horrid noise which I think was coming from the pump for the liquid cooling system. There was a sort of liquid sloshing sound and a whine like you get when your car windscreen cleaning system has run out of fluid.
I checked for coolant leaks and found nothing. I took the machine in to an Apple Service Center and they have now told me that the CPUs need replacing at a cost of £700. I don't trust this diagnosis. The machine ran fine, albeit at a higher temperature than normal.
I'm not interested in paying half what I paid for the machine brand new just to replace CPUs, particularly for a machine that is discontinued.
Can anyone offer me some suggestions as to what I can do about the machine?

Took primary tower in to apple today with coolant dripping from rear. . .
we run two G4 1ghz laptops, two G4 towers 500mhz and 466mhz. . newest computer of bunch craps out on me with a coolant leak?
APPLE PowerMac G5 Coolant Leaks World database report
http://www.fusina.net/G5coolantleaks/index-stats.php
Only 3 models were made with liquid coolant?
was quoted $625 for processor replacement $85 for hardware repair level-1 $710 total?
seems I made a mistake in purchasing liquid cooled mac. . .
the dual 2.5ghz accounts for 78% of failed coolant systems, check database link above, maybe apple could provide database with access for users to keep track of worst mac systems built. . .
there was another thread that apple decided to put into the archives at http://discussions.apple.com/thread.jspa?threadID=957435&tstart=0
why does apple not have a uniform repair policy with these failed machines? Why do I need to speak with a manager and pursue all these avenues to deal with what seems to me a faulty piece of machinery that I have built system of peripherals around?
Manager at apple store has agreed to wave $100 diagnostic fee and to cover half cost of $710 repair bill. Not feeling great with the idea of paying $355+ in repairs for a computer that will probably start leaking once I put it back into high gear crunching data. . .
Others have had apple estimates of $1100 or even $2500 plus in overseas markets. . .
Could apple remove liquid cooling system, thereby eliminating future leaks/catastrophe's?
Plan on making calls to APPLE to see if repair can be cleared regardless of out of warranty status. Pains me to have bought liquid cooled computer knowing that Apple removed cooling system in future models. . .
Oh yeah found in the G5 online manual they say. . .
Liquid Cooling System, Some Power Mac G5 models use a liquid cooling system to manage the temperature in the computer. The liquid cooling system is sealed and is designed to be opened only by an Apple Authorized Service Provider (AASP). · Warning: Do not attempt to open or service the liquid cooling system. Opening the liquid cooling system may damage your equipment, and such damage may not be covered by the limited warranty on your computer.
· Warning: Always operate your computer in an upright position. In the unlikely event that coolant leaks in or from your computer, disconnect all electrical power to the computer and do not restart it. Contact an Apple Authorized Service Provider or Apple for information about servicing your computer. After disconnecting electrical power, you can clean up coolant using an absorbent cloth. Avoid inhaling or direct contact with skin. Coolant may cause minor skin irritation. If coolant contacts skin, wash well with soap and water. If coolant contacts eyes, rinse thoroughly with water. Dispose of all clean-up materials in accordance with your local environmental laws, regulations, and guidelines. Coolant may be harmful if swallowed. Material Safety Data Sheets (MSDS) are available at www.apple.com/environment/resources/msds.html.
•• alarming words I found are (some Power Mac G5 models), (unlikely event), (Avoid inhaling or direct contact with skin), (Dispose of all clean-up materials). . ahhhhh, why liquid cooled?
what to do what to do?

2.3 gig liquid cooled?

Is the late 2005 2.3 gig dual g5 liquid cooled? I can see copper tubing behind the g5 panel.

Hi. Relax - 2.3s don't leak. G5s are air-cooled - except the 2.5s and 2.7
http://www.everymac.com/systems/apple/powermac_g5/index-powermac-g5.html

Check your computer if you have a liquid cooled G5

Hello
Please excuse this thread as not possibly being in the right category
I am trying to reach as much of the Mac community and alerting them to a defect in the liquid cooled G5. Below is my communication sent to Apple?
Check this site out: http://www.xlr8yourmac.com/systems/G5coolantleaks.html
My Post to Apple:
Apple should have notified me of the leaking cooling system problem. I could have taken it to them for a check before the Apple care expired.
Checking the sites I have found that this has been a reoccurring problem with the G5 liquid cooled system.
I have bought the Apple care on both my g5 ppc and my G5 imac. My imac warranty is still in effect.
I was told by the store that there is and has been no recall on the liquid cooling system and they can’t give any credit on the repair unless Apple care authorizes the credit.
With all the problems regarding the liquid cooled system, Apple should accept some of or all the responsibility of the this defect.
I have recently purchased leopard and installed leopard along with the purchase of iLife and iWork. I have spent considerable amount of money with the purchase of this machine. 2 23” cinema displays, airport, Ram pci cards and software Cs CS2 and plug-ins for Photoshop.
This computer has less than two years of operating time as it’s in my home in Arizona. I am only in this house during the winters.
Bottom line apple should have notified me of this defect so I could have had it checked at the store before the warranty expired. Apple should accept this defect as there responsibility and correct with no charge
Thank you for any considerations
My post on the apple discussion board:
Just took my g5 liquid cooled computer into apple because it is leaking and dripped onto my power supply. I am looking at a little under a thousand dollars for repair. This was my first Mac that I bought in November of 2004. Its out of warranty but has only been used 6 months out a year as it is located in my home in AZ which I am only there for the winters. (Less than 2 years of actual use) They told me at the apple store there is no recall and I would have to call the apple care people to try and get some help on the cost.
I am upset with this problem and had read that after about three years they start to leak. I thought I was in good shape until this morning.
They told me that the power supply could be bad also. They will order the parts and call me when it’s done.
I do feel apple should have some responsibility with this leaking and I will try to talk to them on Monday.
I should have taken the computer in just before the warranty was up had it checked.
I will post back when I have some answers
Dick

I just talked to applecare today and they are replacing my g5 with a Mac pro 2.8. They are matching all my upgrades that I had on my g5 that I bought from them. I can't commend them enough, what a great company to deal with. They recognize they had a problem and doing their customers right.
Dick

Liquid cooled G5's - what models???

Hi,
Can someone please confirm what models were liquid cooled? I need to buy a G5 but do NOT want a liquid cooled system. I think I should be OK with a dual core 2.3GHz but I hope someone can confirm that this is air/fan cooled.
Thanks in advance

Only G5s running at 2.5 GHz and above were liquid cooled.
Therefore, the 2.3 GHz model you're looking at is air cooled.

Liquid cooling on G4 PowerMacs?

Has anyone tried an alternative cooling method to a G4dp MDD PowerMac?
My CPU temps are typically in the 130-133F range and during the warmer months the fans kick in quite often. I have looked at the Verax fan upgrade, but I would like to find some information (pro or con) about a liquid cooling system that may be available. I would like to reduce both the noise and heat.
The high-end G5's have/had a liquid cooling system as standard. Could this be ported to a G4 or would the needed modifications not be possible?
Thanks!
Mike.
PowerMac G4 Dual 1.0 MDD Mac OS X (10.4.5) 1.5 GB, 23" Cinema Display

I have not tried the liquid cooling as of yet, http://homepage.mac.com/steve.smedley/Personal9.html, (saw the same kits at Comp USA), but did settle for the verax fan kit.
I recently upgraded my MDD FW800 1GHz single cpu (133MHz bus) to a dual 1GHz using a new module meant for an Xserve with with the same bus speed.
It essentially turned my reasonably quiet Mac into a wind tunnel with temps running at 134˚F to 136˚F running idle, and as much as 138˚F under a full load.
The Verax kit has lowered my temps, right now running at 127˚F with just Safari open, and running as high as 129˚ to 130˚F under a heavy load, but not as noisey. The 120mm fan now just runs at a lower constant speed which is alot quieter, my power supply fans are another story and they are next on the list, right now they are making the most noise everything else is a much quieter whoosh of air.
The Verax kit is quiet, considering I have now have 5 fans in my Mac and the power supply fans are now my only noise makers, a constant steady irritating noise at that.
Just a note about the Verax fan kit, they include a 80mm fan to replace the 120mm, I opted not to use it because I wanted more intake for inside the case, the one they sent looks like a piece of crap, and I know the cfm had to be much lower than the 120mm.

3rd party cooling systems?

Living in Southern California, I have a hard time keeping my G5 tower cool during the summer. My cpu heat widget has been showing tempatures between 139 to 150 degrees.
Does anyone know of any 3rd party cooling systems out there that might help bring this number down?
I have an old pci card that was a cooling fan, but it requires the type of old power cables you'd find in a G3 or G4 tower.
I've heard about liquid coolant systems. Anyone know about those?
Thanks in advance.

Hi Enio;
My Quad is always reporting CPU tempertures between 140 and 150 no matter what the room temperture is. I am running F@H on all four CPUs so they are all 100% busy. The only thing that changes in my system as the room temperture goes up is the fan speed. I don't think your temperture are out of line.
Allan

Liquid cooler fans on blackbird 002

I would like to know how to check out the liquid cooling system. At the current time my system overheats rather rapidly ( about 10 min. ) I need to check pump, liquid levels and power at source of pump. The radiator fans are working and so are all other fans.Is there a quick way to tell if the pump works. It may be the motherboard but I hope not. I also can't figure out how to pull out the main fans and get to the radiator.

HWMonitor picks up 3 different fan speeds for fans 0,1,and 2. #1 was running at about 700 rpm 2 at 3200 rmp and 3 at 700 rpm. I have a striker extreme motherboard, and two wires coming off of the part of the cooler mounted to the CPU, a green and black are connected to a terminal identified as CHA FAN1. Is this the power to the pump? I don't think it is showing up on HWM.I am going to call asus but if you have any recommendations please let me know.PS CPU core 1and 2 temps got over 101 deg F and machine shut down.I may try testing voltage output at CHA FAN1on the mother board.

Cooling system leaks

Ok. You have my attention. It seems like a lot of people are beginning to have this problem. This really concerns me. I have a 2.7 gig dual G5. Does my machine have the modified cooling system, or is it just as susceptible to leaks as the first 2.5 gig machines?

"It seems like a lot of people are beginning to have this problem."
"seems" is the key word here. There are several MILLION liquid cooled G5's out there. There have literally been only a handful of reports and most of them are anecdotal. We do not know the environmental conditions or user status of these reports. You simply cannot jump to the conclusion that a large number of machines are leaking. Do not fall into the mental trap that some do when they come here and see various reports of failures on various pieces of hardware. Even if a dozen people report here that their machine started to leak doesn't mean that a large number of machines are involved. Forums like these concentrate the negative.
You should not be stressing out over whether your machine will start leaking. The overwhelming odds are that it will not. And there's nothing you can do to prevent it if it's going to happen. These systems are sealed and not serviceable by the user. On other troubleshooting sites, like MacFixit or Macintouch, that have been around longer than the Apple forums and have very knowledgeable people this issue is not on the radar screen. I'm not worried in the least bit and I have a 2 year old dual 2.5 Power Mac.
Dual 2.5GHz G5 Power Macintosh Mac OS X (10.4.7) 1.5GB RAM 20" Apple Cinema Display

G5 2.7ghz Dual, Leak liquid cooling system:

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