I'm sure that CPU A is A and B is B.
I used this thermal paste:
I hope that the PowerMac isn't damaged.
Tomorrow I will retry.
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Noisy PowerMac G5 Quad - LCS system?
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I'm sure that CPU A is A and B is B.
I used this thermal paste:
I hope that the PowerMac isn't damaged.
Tomorrow I will retry.
Thermal paste non-conductive, so this is not the problem. Control the cable.
Im not sure, perhaps you need to run the calibration software.
Im not sure, perhaps you need to run the calibration software.
Theres a couple scenario:
1: your pump is clogged, so the mac freeze when overheating
2: one of the processor dont make full contact with the lobo connector.
3: you bent a pin on the lobo
You could try installing only one cpu ( cpu A ,the one on top). The cpu B is slew (slave?) to the cpu A. You can boot with only one cpu. I'm sure you didnt damage your mac. When you screw your pump assembly in place, its important to start with the center screw ( the one that apply pressure on the cpu connector). Screw them in a pattern. Then you can screw the ones that are on the edge of the pump assembly (these one are there to secure the assembly in place). Sorry for the bad english, I'm tired atm.
Update:
I disassembled and repasted again.
It starts to boot macOS (apple logo) but stucks after around 30 seconds. The LED 2 is on(high temperature on CPUs).
So I'm pretty sure that the LCS is not working. I tried to disconnect it and the problem is exactly the same.
Maybe pumps are in block ?!
Any suggestion?
I'm thinking to buy passive heatsink and convert it in air cooling.
2.0 GHz G5 DUAL Heatsinks are really enough for QUAD?
I disassembled and repasted again.
It starts to boot macOS (apple logo) but stucks after around 30 seconds. The LED 2 is on(high temperature on CPUs).
So I'm pretty sure that the LCS is not working. I tried to disconnect it and the problem is exactly the same.
Maybe pumps are in block ?!
Any suggestion?
I'm thinking to buy passive heatsink and convert it in air cooling.
2.0 GHz G5 DUAL Heatsinks are really enough for QUAD?
Did you repaste a CPU before?
Did you clean the CPU and cooler with isopropanol?
Can you make a picture of your cooler to see the pumps?
Did you clean the CPU and cooler with isopropanol?
Can you make a picture of your cooler to see the pumps?
Yes, I’m not a professional but I did it before.
I used alchool isopropyl spray.
When I disassembled it for the second time, I saw that the paste that I used was distributed correctly (not so much and uniform)
I think that the problem is not the paste.
I started the Mac with and without the LCS energy connection and there is no difference: the Mac starts, macOS loading and after some seconds stucks.
The 2.0 dual hs is not enough. You need a 2.3ghz one. If you dont have a machine shop to modify the hs for you, you could convert your quad to a dc 2.5ghz.
See my post about a quad air cooled. https://forums.macrumors.com/threads/quad-g5-air-cooled-dxf-included.2229488/
See my post about a quad air cooled. https://forums.macrumors.com/threads/quad-g5-air-cooled-dxf-included.2229488/
Update:
I repasted again. (third times)
My problem is not solved.
MacOS starts for a few seconds, and CPUs are correctly detected.
CPU A temperature is 40°
CPU B temperature is 90° in idle... so I think that pump B is not working.
I will try to buy another LCS for QUAD and I will retry...
I'm very interested in AIR conversion but I want to maintain double CPUs and I don't know where I can cut 2.3 GHz Heatsink ...
I also have at home an LCS of dual 2,0 GHz but the power connector is different. So I think that I can't' try it.
Thanks for any suggestion.
I repasted again. (third times)
My problem is not solved.
MacOS starts for a few seconds, and CPUs are correctly detected.
CPU A temperature is 40°
CPU B temperature is 90° in idle... so I think that pump B is not working.
I will try to buy another LCS for QUAD and I will retry...
I'm very interested in AIR conversion but I want to maintain double CPUs and I don't know where I can cut 2.3 GHz Heatsink ...
I also have at home an LCS of dual 2,0 GHz but the power connector is different. So I think that I can't' try it.
Thanks for any suggestion.
I don’t have a LCS system so I can’t help you with that problem. I would disassembly the LCS, but I have learned electrical engineer, therefore i have the necessary skills.
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Found this detailed work log for servicing the Quad G5 LCS. Hope it helps.
He has a dual pump version of the LCS. There is a guide for that version too, but it is a bit harder to repair than the single pump one.
Cheers, Nikola!
NO ! Totally different. The PCI-X models had a different water cooling system. Quad uses dual pump - less reliable, though you'd think 2 would be more, but its not - single is most reliable according to xlr8yourmac.com - don't know if they are still around, maybe webarchive.
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Wow, I just connected my Quad G5 and nothing like that occurs even at full load, fans come on of course, but not of that magnitude. Single pump, never had to replace.
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Let me know how air cooling works, personally, I am not about to touch my G5 Quad.
1. Dont have the right tools.
2. A lot of parts and possibility for parts to get lost.
1. Dont have the right tools.
2. A lot of parts and possibility for parts to get lost.
Temp will reach 70c celsius and above with the 2.0hs (fan rev high/max under stress). Its a crap heatsink, I dont recommend it.
Temp will reach 60c celsius and maybe a bit higher (63c) under load with the 2.3ghz heatsink. Fan dont rev high, the G5 is happy. Its a very well made heatsink compared to the cheap 2.0 one. Also in the meantime, if you get a 2.3ghz heatsink with the secondary hs included ( like this picture with the side hs), you can use your quad with one 2.5ghz cpu in place. Hope this help.
This is not what I said. I made a quad air cooled for myself. I'm just advising NOT to use the 2.0hs. When I discuss the temp under load, its under 100% load using powerfractal. The OP SHOULD USE the 2.3 heatsink.
Ok, so a 2.3 heatsink i can use. But, wouldn't I need 2 of those since the Quad has two processor cards ?
Online I found two different Heatsink used with the 2.0ghz:
The first has the memory heatsink behind:
The second has a lateral memory heatsink 630-7416:
The second is very similar to the one used into 2.3dual.
Do you think it is good enough?
The first hs you posted is not compatible. It got a nickel baseplate and is not enough to cool a dual 2.5 chipset. One member posted some research he did on a quad on air, a while ago, using these a and from memory he said the temp were high and he was unable to screw the hs in place. These one are use in the 2003 and 2004 and use totaly different mounting screw compared to the 2005. The second hs you posted is from a 2.0ghz late 2005 and yes, while it can be installed alone, or if you machine both of these to put them side by side, it is not enough to cool a single dual core 2.5ghz chip, or two dc 2.5ghz chip. Do some research, read my thread about a quad air cooled. Ive tested these (2.0hs)... What you want is the one I recommended. Since I doubt you could find a shop able to do ‘edm wire cutter’ you should focus on fixing your clogged lcs. I decided to mod my own quad because, like you, my lcs was clogged but I’m a cnc machinist/cnc programmer and I have access to a machine shop, including a edm wire cutter. And I had a lot of time to thinker with my quad. All the info needed is in the thread I made. Anyway, its my last reply, I’m starting to repeat myself. Have a good day.
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In your opinion, it is possible to cut with an angle grinder using diamond discs?
Thanks
With hand tool, what I can figure would be to mount the heatsink into a vise ( mounted not to crush the hs, the other way) then place wooden shim to prevent the fin from moving too much. Then cut with a fine metal saw and finish with sand paper if needed. You could try with a angle grinder but a hs is fragile. Maybe a small air powered one or a small blade from a dremel would be better. Its a lot of work imo compared to servicing your lcs. But if your up too it and accept the challenge why not! Some people make xbox 360 laptot with only hand tools!
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Edit: Use a dremel, start from the top. The fins detach like an accordeon. Then cut the base plate in a last step.
My story is not ended ...
I'm waiting for an HS, I bought it on eBay but I suspect that is the 2.0 ghz model even if the description reported 2.3 ghz.
On eBay is very hard to find the 2.3 version and usually, it is expansive.
Tonight I had a new idea:
My LCS is unusable because of the air inside, when I move the LCS I can hear the liquid movement. But there aren't big liquid leaks. Rubber Tubes seems good and I think that a refill is enough to fix my problem. I "played" with pc components since I was a child so I'm not a newbie but my skills with liquid cooling systems are ZERO.
My idea is to insert two syringes into two different pipes of the LCS. The first to insert the new liquid and the second to expel the air inside the LCS. In this way, I can refill the system very easily. In the end, I would like to use something used to close holes in rubber, and if it is needed to tighten tubes with cable ties.
What do you think about this procedure? Could you give me some suggestions? thanks.
I'm waiting for an HS, I bought it on eBay but I suspect that is the 2.0 ghz model even if the description reported 2.3 ghz.
On eBay is very hard to find the 2.3 version and usually, it is expansive.
Tonight I had a new idea:
My LCS is unusable because of the air inside, when I move the LCS I can hear the liquid movement. But there aren't big liquid leaks. Rubber Tubes seems good and I think that a refill is enough to fix my problem. I "played" with pc components since I was a child so I'm not a newbie but my skills with liquid cooling systems are ZERO.
My idea is to insert two syringes into two different pipes of the LCS. The first to insert the new liquid and the second to expel the air inside the LCS. In this way, I can refill the system very easily. In the end, I would like to use something used to close holes in rubber, and if it is needed to tighten tubes with cable ties.
What do you think about this procedure? Could you give me some suggestions? thanks.