Processor removal help: G5 liquid cooled

I am looking for some help on removing the heat sync/ processor on a dual 2.5 with the liquid cooled unit.
The 8 CPU Heatsink Allen screws 2.5 mm. that sit in the "Lagshields" are loosened, but the CPU unit still is being held down by more fasteners?
Which other fasteners ( the torx screws?) need loosening to be able to lift the CPU unit free of the board ?
Has anybody done this that can remember the procedure.
Any help is appreciated !! -john

Thanks to all who provided help on this. I did in the end get a copy of the Service Source for the model I was working on (a late 2004 2.5 dual LCS Heat Sink model) which made all the difference. This document is essential. Thanks to a discussion user who had a copy! In my case I needed to replace a blown PSU (not an overly difficult task for anyone who is proficient in removing and replacing components)
While I understand the logic for Apple to not make this document too readily available I disagree with this strategy. There is nothing overly technical in this document and in the end people will be lead down the wrong pathe (and do more damage) if they cannot get good info. In my case I found all kinds of miss-leading info about how to pull the processor unit for my machine. Some said remove all the screws, others said just 4 screws (in fact there are 8) Some said don't do it it is complicated, others said it is no more difficult than an air cooled unit. Oddly Apple's site only showed the Service Source document for the earlier air cooled models, which is only helpful to a certain degree.
My point is that too keep things a mystery by not allowing good info to be had causes more harm. Maybe that's the intention ? Anyway I am big fan of Open Source, collaborative sharing of ideas etc. So forums like this are a big help.
Thanks again to all !!
-john

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G5 liquid cooled needs a new logicboard...HELP

My fathers G5 was tested at the apple store.
they said it needs a new logicboard.
CAn I do this?
it has dual 2.5's liquid cooled.
Do I need to make sure the new logicboard is a match?
will others work?
Replacing logicboards is new to me.
Any advice or info would be greatly appreciated.
Thanks

Hi ksgraphite-
Greetings and welcome to the Apple boards.
Replacing the logic board will be a very involved job and there is much that could go wrong. If you are up to the task I would suggest checking with these folks: MAC-PRO
Luck-
-DaddyPaycheck

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 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?

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
Mac Owners Support Group
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Disclaimer required by Apple Discussions Terms of Use: MacOSG - a non-profit Apple User Group - may receive some form of compensation, financial or otherwise, from my recommendation or link.
Dual-Core Power Mac G5 • 2.5GB RAM Mac OS X (10.4.6) 10,000RPM Boot HD • 60G Photo iPod • AppleCare

Z420 ventilation / fan / liquid cooling

hi,
I have z420 (E5-1620)
Serial Number: [Personal Information Removed]
Product No. WM434EA#AK6
this thing is loud as hell since day one. I'm not a heavy user, but I do work with grapchics (photoshop mostly).
had to add 16Gb RAM, ssd for OS, 3 secondary hdd's for storing, hd 7870 asus, 2x hp monitors..
anyways, I'm looking for ways to make it work more silent. and heard about "liquid cooling" available for z420.
1 - is it worth getting? will it make it work more silent (while in normal workload / idle mode)?
2 - would it be possible to get myself a different brand of liquid cooling suitable for this mashine? point out some pls.
for instance, these http://www.corsair.com/us/cpu-cooling-kits/hydro-series-water-cooling-cpu-cooler.html compatible?
3 - I noticed my model came without this part/fan in red cicrcle:
what product model/no. is it? would it help me with my issue?
more info about fans on z420:
Cooling Solutions Air cooled forced convection, liquid cooling (optional)
Power Supply Fans 92 mm x 92 mm x 25 mm 4-wire (non-serviceable)
CPU Heatsink Fan 92 x 25 mm 5-wire PWM
Chassis Fan 92 mm x 92mm x 25 mm 4-wire PWM
Memory Heatsink Fan Yes, rear memory
any help would be realy realy much appreciated. I work with this thing EVERY DAY. I need to make some changes or start looking for other solution/PC

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.

OBIEE Customization - Removing Help (?) icon Across OBIEE11g Application

Hi,
I am using OBIEE 11g and I need to remove 'Help' (?) icon across OBIEE Application. Can you pls. guide me to achieve it.
Thanks for your help.
Regards,
Ramesh

Instead of removing I would suggest to replace the icon with some other icon
look for the file loc
OFM\Oracle_BI1\bifoundation\web\msgdb\uicomponents\obips.ToolbarHeader.xml
replace ? mark icont with . or dot icon
Hope this helps
~ http://cool-bi.com

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

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.

Z820 - Added Liquid Cooling Option

Hi,
I upgraded my Z820 with the liquid cooled CPU heatsinks.
Apparently the 'fan cooling profile' is based on the hardware configuration, do I need to do anything else or will the system detect the changes at boot time?
Reset the CMOS for example?
Thanks,
Rob

Hi,
It's your machine, out of warranty, you can do what ever you like, you can remove the whole case and blow cool air to the machine, you can drill dozen holes to get better air flow, you can pour chilled water thru all corners of the machine ..... and this will reduce 5 or 10 degrees. The question: do you want to do that ?
Regards.
BH
**Click the KUDOS thumb up on the left to say 'Thanks'**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Liquid Cooling Leak

Hello, I am trying to fix a Power Mac G5 that had a leak in its liquid cooling unit. Fortunately, the leak did not damage the motherboard, and the machine still powers on (the last I checked.) But with a damaged liquid cooling unit, the processor will overheat quickly. Does anyone know if I could fix this myself, or where I could buy a replacement liquid cooling unit?

My G5 runs BLAZING FAST. When it runs. Like so many others, it has a bad Logic Board and is unusable as a work computer. I am considering selling it for parts, (though maybe APPLE will step up to the plate and provide Logic Boards at a realistic and affordable price). Doubtful...
The Power supply, cooling system, fans, memory, processors are all fine. I bought it to run Logic studio 8, which for a second or two ran flawlessly. Then, POW! Too many sickly symptoms to list.
If others are interested in the parts, please let me know.
Best,
Doctor Ken
9/15/09

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!

Imac 24 inch liquid cooled?

I saw pictures of a guy that had opened his 24 inch iMac.
I see copper parts on the photo's, is this liquid cooling?
http://images.google.nl/imgres?imgurl=http://forum.insanelymac.com/uploads/post- 19964-1158606972thumb.jpg&imgrefurl=http://forum.insanelymac.com/index.php%3Fshowtopic%3D28012&h =156&w=200&sz=9&hl=nl&sig2=G9LzR3r8djyEnOclkJGqog&start=3&tbnid=hqGDX2dVsufTTM:& tbnh=81&tbnw=104&ei=CffRbTUELn6wQHN7qy0CA&prev=/images%3Fq%3Dimac%2B24%2Binch%2Binside%2Bpicture%26svn um%3D10%26hl%3Dnl%26sa%3DG
iMac 24 inch, 2GB RAM, Intel Core 2 Duo, 2.16 GHz Mac OS X (10.4.8)

To view the photos one needs a member account on the forum where they are posted, so I can't view them.
The iMac 24" is not water cooled. It uses the same design as the other iMacs with bottom to top airflow and fans. You may be seeing metallic foil used for shielding in the iMacs.

Re: Which fan connectors to use for liquid cooled CPU in X99A Raider mobo?

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MSI Dragon Liquid Cooler

Hi all,
would like to ask if you have any info on what the hell is the MSI Dragon Liquid Cooler? Seen it on scan.co.uk for 40 quid (Pounds) but why does it come as an OEM and why MSI doesn't have any info about it on their website? Seen some reviews on it but they were just comments under product. Wanted to watch video-review, or comparison of it and e.g. Corsair h100i but no go..
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Processor removal help: G5 liquid cooled

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