I remember mine. Got it for $50, tested it before taking it home, worked fine. Got it home never turned on. Didn't realise it was the water cooled model when I got it. New it wasn't going to be good. Removed the CPUs and most of the capacitors fell off. In the end sold the computer to someone who wanted the case.
Having used a Powermac G5 for a few years I was SCREAMING at my phone about how the fans would run at full speed until the air duct was put back. Almost left a comment correcting you until I saw 22:11! Glad you figured it out. Enjoy the G5!
So glad this video came out, I was worried we'd never get to see what happened to this thing! That coolant is so messy lol. I ended up getting my own G5 (air-cooled) but it wouldn't boot, ended up having to reflow the U3 chipset on the back of the motherboard to get it working, most likely happened due to bad thermals so I'd say you might want to consider repasting it and replacing those plastic clips holding on the U3 heatsink with some proper screws and bolts. Great video as always, this was fun!!
fun fact, aside from using automotive grade coolant, the pump and radiator assembly was built by Delphi Automotive, which is a radiator manufacturer owned by GM.
I use to fix these when they were in warranty. They had a notorious issue of leaking and also were difficult repairs. And worst yet the power supply is on the bottom. Horrible design
They shouldn't have been water cooled in the first place, really. But they didn't leave themselves a choice with the airflow on that case. Form over function is Apples design philosophy.
I used to fix these a lot when I also use to sell them as second hand / used / refurbs. I have seen worse corrosion than that - not boasting, just saying. The worst PowerMac G5 was the late 2005 model, where you have to pull out the CPUs *AND* logic board, just to replace the power supply.
@@justinvzu01 Liquid cooling was just a commercial move to sell stocked G5s in bulk before the arrival of Intel Mac Pros. There is not a single G5 that needs LCS to function. The large heatpipe heatsinks were sufficient and in the Apple and IBM G5 servers the heatsinks were even smaller.
@@aa-au Yeah those ones were freaking stupid. I have replaced a few of those... Recently had someone bring me a powermac G5 for repair at my shop. I took one look at it (water cooled) and told him to take it elsewhere.
@@pickelsvonbrine If you don't haver the necessary parts to repair a PowerMac G5, then it's better to pass onto the next person. The parts for PowerMac G5s (and some G3s/G4s) are getting harder to obtain.
So if I'm right in my calculations, you took two functioning Macs and one exploded, and thanks to a lot of hard work and ingenuity ended up with one functioning Mac and scattered parts? I love it! :)
If I remember correctly the radiator and electric pumps were from GM as well. The radiator I want to say was the same or at least very similar to a transmission cooler from a GM truck of the time.
I designed a 3D printable AIO bracket for my late 05 2.3Ghz DC G5. The bracket can mount a corsair H60, H80i or H100i liquid cooler to the G5 CPU directly. The whole project is on Thingaverse btw, but it's currently work in progress. The bracket is also (although I haven't personally tested it as I don't own a Quad) compatible with G5 Quad systems, provided you devise a method to mount the radiators for dual AIOs, Alternatively you can use a dual pump block and single radiator as used in older Dual GPU AMD Graphics (I have seen some that use the same corsair mounting layout and would thus be compatible).
Say what you will about Mac's from this era (for example, they're overpriced and underpowered, make terribly stupid design decisions on things like user peripherals, and focus far too heavily on form over function) but the first time I saw the G5 on display at Best Buy I was utterly captivated and in completely in love with the aesthetic. The G5's design philosophy was so ahead of it's time that it would happily sit beside any modern "clean" build today. I'm also convinced the G5 played a huge part in influencing so many of us modern PC builders, because once we all got a good look inside of a G5, suddenly everyone became self conscious about that rats nest of cables we called PC's, and we all wanted to strive for that tidy and cable managed look the G5 had.
This brings back memories… I built these in Elk Grove California (close to Sacramento). I was a “failure analyst engineer” on the assembly/production line for the “Quicksilver” G4’s to these G5’s and when these came in I was the only one “not drinking the kool aid”. Everyone was all “Apple makes THE BEST computers ‘cause they’re so fast they have liquid cooling!!!” and I was like “……🙄 they’re liquid cooled because the G5 is a colossal piece of s**t, notice how there is no G5 PowerBook and the last batch of air cooled G5’s PowerMac’s would barely pass their tests and were overheating. Why isn’t there a 3Ghz G5?!” and everyone was all “how DARE you not drink the Apple kool aid!!!” and I was the “I’m just stating facts” guy ‘cause I was always one of those nerds that focused on the CPU’s in computers. I knew Apple had to make a big change and their “RISC is better ‘cause it carries more bricks in the wheelbarrow on each trip” B.S wasn’t going to convince dumb people and Apple fanatics forever. Then the great Intel change… 🤓 Funny thing is… I have a Mac today as my main PC. It’s a Mac Pro I upgraded with dual 3.5Ghz and 12 core Intel CPU’s. I love that “cheese grater” case design. No idea why people call it a “cheese grater” though, the new Mac Pro is the cheese grater if you ask me… ::shrugs::
I lived off Big Horn and Franklin in the early 2000s not far from the Apple distribution center on Laguna Blvd. Not sure if it was around the same time but I loved living there.
@@Thaleios Oh cool! I was working at Apple in the early 2000’s, I’m from Stockton. I live in the Reno area of Nevada now. I miss that time, computers were “fun” and watching a Steve Jobs keynote was like watching Eddie Van Halen do his Eruption solo, lol
awesome video. I´ve always wanted to know how the water coolant G5 worked. and this video really showed the really inside of the computer "intestins" . Excellent content Ken ! Big Fan !
Just checked my G5 and found it's only the 1.8g version. I'm relieved to know i don't have a liquid cooled time bomb in my house. Thanks for the Video Guys !!!
12:55 Ken jests, but you actually _could_ get an ultrasonic cleaner. Sure, a Crest might be expensive, but there are mini cleaners for things like jewelry or glasses for $50. There are even some for under $20, but those are likely to be fake af. 13:52 You could try sticking the cap that fell of in an ESR meter and find its ratings to find a replacement. If it doesn't work and the meter can't detect it, you could use pogo-pins to check the same cap from the other CPU board.
Only Apple would put corrosive and highly conductive cooling liquid in a PC and to top it off, the PSU becomes the drip tray in case of a leak. Brilliant made to fail engineering.
From what I know, this was one of the first water cooled PCs, so they made a lot of mistakes (like using car coolant, cause PC liquid cooling coolant wasn't invented yet lol). Also the PSU being on the bottom is because the original G5s were all air cooled, so that wasn't an issue (the were basically forced to liquid cool because the IBM CPUs were so hot, of course they then switched to Intel after).
@@seshpenguin If the internet is correct, the liquid cooled G5 came out in 2005, which is the same year I built my first liquid cooled PC with components - and cooling liquid - from Aquacomputer. Yes, those were probably the early days of liquid cooling but if a (back then) small German company could come up with lasting components and a non-corrosive liquid, Apple should have been able to as well - especially considering the hefty price tag of a G5 back then.
They are literally my favorite case ever i looked for ages for a pc case that looks like that but never found one i was happy with. How hard was it to convert it?
@@JaredConnell Well, I as a complete amateur with help from my dad managed to do it poorly, but it was very usable. So you should be able to do it too. But I didn’t have a proper IO shield cutout and no proper motherboard mounting plate. It was all cobbled together.
The only information on the fluid used that I found was that it's propylene glycol, and the corrosive properties stem from it degrading over time and from heat, which can produce organic acids.
It's basically a common car antifreeze. The safety datasheet lists mostly ethylene glycol, some denatoneum benzoate, and misc safe ingredients (water). pH of about 8.0.
@@MajenkoTechnologies Oh, I didn't think to look up the SDS. Well, I wonder why it's so corrosive then, because antifreeze usually contains corrosion inhibitors and is made to be not corrosive to most metals used in cars, including steel, copper and aluminum. I mean the guys here act like the cooling system was filled with pure sulfuric acid.
@@MajenkoTechnologies Oh, and for everyone not knowing that: denatonium benzoate is just to make it taste bitter, so kids don't drink it, especially because ethylene glycol has a sweet taste but is also pretty toxic.
As far as I remember, failing power supplies were a rather common issue with the PowerMac G5 - not just with the liquid cooled models? I like Greg's grim sense of humor as he assesses the extent of the mess 😄
Has there ever been a water cooled PowerMac G5 that didn't start leaking? I have never seen a single one, and this was already an issue 15 years ago, when they were still sold!
Liquid cooling was just a commercial move to sell stocked G5s in bulk before the arrival of Intel Mac Pros. There is not a single G5 that needs LCS to function. The large heatpipe heatsinks were sufficient and in the Apple and IBM G5 servers the heatsinks were even smaller. I disassembled LCS from my 2.7Ghz and mounted the classic heatsinks. The 2 ° G5 at 2Ghz has very efficient air dissipation and the iddle temperature does not exceed 48 ° celsius and 60 ° at maximum continuous power for 3 hours during the summer in a room with 28 ° celsius. The very first G5 built at 130nm (like the Pentium 4 Northwood) were very hot but let's remember that they were always 2 cpu. Then came the 90nm G5 970FX versions and the temperatures dropped further. In 2005 the 65nm technology allowed to insert 2 cores in a single die, and Apple presented the G5 Dualcore (1 physicalcpu) and the Quad model with 4core (2 physical cpu), it put the crap of LCS in it and it passed for a super computer (it was equally so if they had air-cooled it but breakdowns would have been rarer and those who spent 3900 dollars for a Quad would have spent 2499 dollars for the Intel version the following year)
Good job fixing this, you created a true Frankenstein of parts from not one, not two, but three Power Mac G5s! And who the hell thought it was a good idea to use corrosive _and_ *conductive* coolant ?
Really cool video guys! I was thinking of repairing my G5 dual 2.5 GHz LCS but I hear so many horror stories about it. It's currently not running as both CPUs and the PSU have corrosion. I have a donor PSU and two 2.0 GHz CPUs that I'll be resurrecting for my project! And thank you for the link regarding where to get ASD 2.58. Big kudos!
Lucky the CPU die has infill under it, that would save a lot of those processor cards. IPA works for some things but a cotton bud dipped in some vinegar dabbed onto corroded parts works great for tougher stuff. You generally don't even need to scrub, just let it sit and wipe it gently and the corrosion should come off.
I'm sorry but who the hell at Apple thought it was a good idea to cool a computer with GM Dexcool?? Especially given that the controversial history of it started becoming public news right before the G5 came out. Imagine if Apple tried using gallium (liquid metal) as thermal compound on MacBooks during the difficult Intel thermal throttling days?
@@virtualtools_3021 The difference is the PS5 isn't 99% aluminum unlike almost every MacBook since the mid 2000s. Gallium is like a cancer to aluminum, even if a small amount of it touches aluminum, it quickly weakens and destroys it
@@TRLTheRandomLab Only if there's a scratch on the AL, that it really gets dangerous. The main issue is, gallium spilling on the board and doing what conductive liquid does
I air cooled my DP 2.7. It worked, but it has odd behavior where, even after a proper thermal recal cycle, the system doesn't properly control the fans while running TenFourFox or other 3rd-party apps (the fans run but only at idle speed regardless of actual processor temperature) unless an Apple program (iMovie, iTunes, iPhoto, etc) is also running, at which point the system revs the fans up until temps are back to normal range and then properly throttles them to maintain normal temps so long as the Apple programs stay loaded. I have no idea what the deal is with that and I'm not the only person to notice this effect with an air cooled swap so I doubt it's something specific to me. Maybe it's just a Tiger thing? I haven't tried it with Leopard yet and indeed haven't touched it at all in a while (I have a DC 2.3 for regular G5 duties). It may be worth having another go with Sorbet or something to see if that improves things at all.
YAYYYY HRUTKAY! So I normally find this channel 'just tolerable.' But with Mr. Hrutkay on board I find it interesting. Am guessing he's happy coz he doesn't have to do all the video setup. And you're happy coz your video is much, much improved. Perhaps you could make this arrangement more permanent?
When the 8-Bit Guy talked about this, he showed the fans constantly going full blast and sounding like a hurricane. It was really funny when he talked about how he had an Intel-based Mac Mini (released just a few years after this big beast) and yet it was more powerful than this big, heavy, noisy giant. At the end, he wondered why anyone would want to even have this in a collection.
Love your friend man. I know, I am a late comment, but I love his vibe. Reminds me of that ever friendly redneck who is a wizard with the engine as he sits above the open hood of a car. This guy here? Nice....same vibe....but instead of face deep in an engine block? He is down and gnarly with the screwdriver and makes me think of what could happen if an auto mechanic got fused with a computer geek. Rock on man. ++++++Yeah, I open up and clean out all my computers in my home as well. Small thin old office Dell running Linux Mint and two other gaming rigs running newest Windows. Thank you for a great video. :D
I never understood why Apple wanted to liquid cool this PC. If they designed a good case, they wouldn't need it at all. Their lack of experience in designing liquid cooling systems was their downfall.
The G5s ran VERY hot, and watercooling in general wasn't much of a thing for computers back in the early 2000s, much less in a prebuilt machine (I believe these were the first factory watercooled machines on the market).
Hi Computer Clan, I have a Power Mac PRO G5 and sometimes turn on and the other times the fans keep running at full speed but computer does not turn on. Could you please give me any idea of what is the problem? Thanks in advance.
I just got a g5 quad with a non leaking LCS…I’m going to remove the cooler to inspect better and flush the system. That said, do I have to use dexcool or am I able to use another coolant?
Amazed that the G5 (well, kinda) they used in the Xbox 360 was more powerful than any of the CPUs used in the PowerMac G5, while also being significantly smaller.
I was yelling at screen (amongst other people here), "Put that acrylic deflection board on! That will stop the fans blowing at full speed!" I believe the sensor is on the leftmost hole (to the front) where the deflection board has a small metal strip on it to activate the sensor. You can replace the sensor if faulty, but out of the hundreds of PowerMac G5s I've pulled apart I have never replaced a sensor.
I have a late 2005 model G, that I got second hand with 10's of thousands of dollars worth of a myriad of professional audio/video/graphics production software, circa 2005/2006, and due to the nature of what sort of work I do,.. that thing has never become totally obsolete,... It can do so many things that my newer stuff can't,... either cause there's no acceptable equivalent software available, or cause I simply can't afford to buy it's contemporary equivalent.
I can see how he would plug in the system which was working before it was shipped without realizing it was liquid cooled and that the liquid had leaked. But what I do not understand is once you know it had leaked, why would you wait two years before trying to clean it up? It probably would have been in much better shape and take a lot less work just to clean up the liquid right away. Corrosion happens over time. Clean up leaks and remove bad batteries ASAP.
Enjoy the 2021 finale! I have some AMAZING plans for 2022. Subscribe and stay tuned! 🔔 P.S. captions are now available.
Hapy new year
Yeeee
Happy New Year, Ken!
Happy new year
Good old GM DexKill™️
I remember mine. Got it for $50, tested it before taking it home, worked fine. Got it home never turned on. Didn't realise it was the water cooled model when I got it. New it wasn't going to be good. Removed the CPUs and most of the capacitors fell off.
In the end sold the computer to someone who wanted the case.
At least it was only $50
@@kirishima638 yeah
Ken looks like that really cool kid who is tech savvy and puts memes on every computer in the computer lab. It's awesome.
@KAAN CAN the two aren't mutually exclusive
Wait that’s me
@KAAN CAN yes
Thats me
Yep. That’s alot for me. I’d say I’m one part of that, one part NOT.
Having used a Powermac G5 for a few years I was SCREAMING at my phone about how the fans would run at full speed until the air duct was put back. Almost left a comment correcting you until I saw 22:11! Glad you figured it out. Enjoy the G5!
So glad this video came out, I was worried we'd never get to see what happened to this thing! That coolant is so messy lol. I ended up getting my own G5 (air-cooled) but it wouldn't boot, ended up having to reflow the U3 chipset on the back of the motherboard to get it working, most likely happened due to bad thermals so I'd say you might want to consider repasting it and replacing those plastic clips holding on the U3 heatsink with some proper screws and bolts. Great video as always, this was fun!!
hey i know you
19:04 - love every second of that interaction
fun fact, aside from using automotive grade coolant, the pump and radiator assembly was built by Delphi Automotive, which is a radiator manufacturer owned by GM.
oh, so that's why it leaked.
I use to fix these when they were in warranty. They had a notorious issue of leaking and also were difficult repairs. And worst yet the power supply is on the bottom. Horrible design
They shouldn't have been water cooled in the first place, really. But they didn't leave themselves a choice with the airflow on that case. Form over function is Apples design philosophy.
I used to fix these a lot when I also use to sell them as second hand / used / refurbs. I have seen worse corrosion than that - not boasting, just saying. The worst PowerMac G5 was the late 2005 model, where you have to pull out the CPUs *AND* logic board, just to replace the power supply.
@@justinvzu01 Liquid cooling was just a commercial move to sell stocked G5s in bulk before the arrival of Intel Mac Pros.
There is not a single G5 that needs LCS to function. The large heatpipe heatsinks were sufficient and in the Apple and IBM G5 servers the heatsinks were even smaller.
@@aa-au Yeah those ones were freaking stupid. I have replaced a few of those... Recently had someone bring me a powermac G5 for repair at my shop. I took one look at it (water cooled) and told him to take it elsewhere.
@@pickelsvonbrine If you don't haver the necessary parts to repair a PowerMac G5, then it's better to pass onto the next person. The parts for PowerMac G5s (and some G3s/G4s) are getting harder to obtain.
Resolder that cap on the G5 CPU. Big SMD stuff like that isn't too hard to fix (As long as the pads are still mostly intact).
This was worth the two year wait! Well done!
It certainly was, Steve!
Those gloves are the first safety equipment I have ever seen.
@@Mister...H I've pulled a lot of these apart and I never used gloves, ever. I did always wash my hands afterwards though.
So if I'm right in my calculations, you took two functioning Macs and one exploded, and thanks to a lot of hard work and ingenuity ended up with one functioning Mac and scattered parts? I love it! :)
I had no idea Apple used GM Dexcool to cool a computer! I remember the extensive work my old GM SUV needed because of Dexcool.
Ok so I wasn’t tripping they did say dex cool cmon I thought apple was smarter than to use a GM product 🤣
Lmaoooo
If I remember correctly the radiator and electric pumps were from GM as well. The radiator I want to say was the same or at least very similar to a transmission cooler from a GM truck of the time.
Greg: Don't try this at home.
*tries it at Ken's home* 😏
the pump was placed above the power supply sounds like a self destruct system for that power mac g5🤔🤔🤔🤔🤔🤔🤔🤔🤔🤔
"Hide behind the giant tinfoil shield." Memories of a better time of youtube.
I designed a 3D printable AIO bracket for my late 05 2.3Ghz DC G5. The bracket can mount a corsair H60, H80i or H100i liquid cooler to the G5 CPU directly. The whole project is on Thingaverse btw, but it's currently work in progress. The bracket is also (although I haven't personally tested it as I don't own a Quad) compatible with G5 Quad systems, provided you devise a method to mount the radiators for dual AIOs, Alternatively you can use a dual pump block and single radiator as used in older Dual GPU AMD Graphics (I have seen some that use the same corsair mounting layout and would thus be compatible).
Dr. Greg and his lovely assistant, Nurse Ken. 🤣
Say what you will about Mac's from this era (for example, they're overpriced and underpowered, make terribly stupid design decisions on things like user peripherals, and focus far too heavily on form over function) but the first time I saw the G5 on display at Best Buy I was utterly captivated and in completely in love with the aesthetic. The G5's design philosophy was so ahead of it's time that it would happily sit beside any modern "clean" build today. I'm also convinced the G5 played a huge part in influencing so many of us modern PC builders, because once we all got a good look inside of a G5, suddenly everyone became self conscious about that rats nest of cables we called PC's, and we all wanted to strive for that tidy and cable managed look the G5 had.
I'm still wondering what genius at apple thought it would be a good idea to liquid cool it with corrosive coolant.
This brings back memories… I built these in Elk Grove California (close to Sacramento). I was a “failure analyst engineer” on the assembly/production line for the “Quicksilver” G4’s to these G5’s and when these came in I was the only one “not drinking the kool aid”. Everyone was all “Apple makes THE BEST computers ‘cause they’re so fast they have liquid cooling!!!” and I was like “……🙄 they’re liquid cooled because the G5 is a colossal piece of s**t, notice how there is no G5 PowerBook and the last batch of air cooled G5’s PowerMac’s would barely pass their tests and were overheating. Why isn’t there a 3Ghz G5?!” and everyone was all “how DARE you not drink the Apple kool aid!!!” and I was the “I’m just stating facts” guy ‘cause I was always one of those nerds that focused on the CPU’s in computers. I knew Apple had to make a big change and their “RISC is better ‘cause it carries more bricks in the wheelbarrow on each trip” B.S wasn’t going to convince dumb people and Apple fanatics forever. Then the great Intel change… 🤓
Funny thing is… I have a Mac today as my main PC. It’s a Mac Pro I upgraded with dual 3.5Ghz and 12 core Intel CPU’s. I love that “cheese grater” case design. No idea why people call it a “cheese grater” though, the new Mac Pro is the cheese grater if you ask me… ::shrugs::
I lived off Big Horn and Franklin in the early 2000s not far from the Apple distribution center on Laguna Blvd. Not sure if it was around the same time but I loved living there.
@@Thaleios Oh cool! I was working at Apple in the early 2000’s, I’m from Stockton. I live in the Reno area of Nevada now. I miss that time, computers were “fun” and watching a Steve Jobs keynote was like watching Eddie Van Halen do his Eruption solo, lol
awesome video. I´ve always wanted to know how the water coolant G5 worked. and this video really showed the really inside of the computer "intestins" . Excellent content Ken ! Big Fan !
Ken, my question is - does the classic mousepad have that classic smell from the 80’s/90’s mousepads? Inquiring minds need to know
The fans will always run at full speed if that plastic shield isn't reinstalled.
@Computer Clan this was a great collaboration. You and Greg made this an excellent, and informative watch. Thanks!
Just checked my G5 and found it's only the 1.8g version. I'm relieved to know i don't have a liquid cooled time bomb in my house. Thanks for the Video Guys !!!
The Part 2 we've been waiting for so long :O ! That G5 Mac really needed a 2nd part after we saw the first part years ago.
12:55 Ken jests, but you actually _could_ get an ultrasonic cleaner. Sure, a Crest might be expensive, but there are mini cleaners for things like jewelry or glasses for $50. There are even some for under $20, but those are likely to be fake af.
13:52 You could try sticking the cap that fell of in an ESR meter and find its ratings to find a replacement. If it doesn't work and the meter can't detect it, you could use pogo-pins to check the same cap from the other CPU board.
Only Apple would put corrosive and highly conductive cooling liquid in a PC and to top it off, the PSU becomes the drip tray in case of a leak. Brilliant made to fail engineering.
From what I know, this was one of the first water cooled PCs, so they made a lot of mistakes (like using car coolant, cause PC liquid cooling coolant wasn't invented yet lol).
Also the PSU being on the bottom is because the original G5s were all air cooled, so that wasn't an issue (the were basically forced to liquid cool because the IBM CPUs were so hot, of course they then switched to Intel after).
@@seshpenguin If the internet is correct, the liquid cooled G5 came out in 2005, which is the same year I built my first liquid cooled PC with components - and cooling liquid - from Aquacomputer. Yes, those were probably the early days of liquid cooling but if a (back then) small German company could come up with lasting components and a non-corrosive liquid, Apple should have been able to as well - especially considering the hefty price tag of a G5 back then.
@@JohnDoe-yn2cr wrong, the liquid cooled G5 came out in 2004 with the 2.5 DP G5
@@SylveonTribe That doesn't really change anything..
@@JohnDoe-yn2cr because a small german company can have the production volumes that Apple requires, in 2003/04, right?
"Not sure why it was made that way but probably wasn't the smartest decision" Episode written by Louis Rossmann
This G5 🤝 The Pontiac G5
Being killed by dexcool
👆I like this
This was an amazing video! I loved it and would love to see more of this!
Thanks for watching : D
One thing this video demonstrates which has only now become apparent is what a great radio voice Ken has.
You can still use cpu without that capacitor. They are only for filtering noise, so it will still run without it. Other capacitors will filter enough.
Seems like this deserves its own SSD, RAM, and replacement processors so the donor can have its parts back and also function.
The G5 I converted to a PC case was about ten times as bad in terms of corrosion. The entire top of the PSU was rusty.
They are literally my favorite case ever i looked for ages for a pc case that looks like that but never found one i was happy with. How hard was it to convert it?
@@JaredConnell Well, I as a complete amateur with help from my dad managed to do it poorly, but it was very usable. So you should be able to do it too.
But I didn’t have a proper IO shield cutout and no proper motherboard mounting plate. It was all cobbled together.
The only information on the fluid used that I found was that it's propylene glycol, and the corrosive properties stem from it degrading over time and from heat, which can produce organic acids.
It's basically a common car antifreeze. The safety datasheet lists mostly ethylene glycol, some denatoneum benzoate, and misc safe ingredients (water). pH of about 8.0.
@@MajenkoTechnologies Oh, I didn't think to look up the SDS. Well, I wonder why it's so corrosive then, because antifreeze usually contains corrosion inhibitors and is made to be not corrosive to most metals used in cars, including steel, copper and aluminum. I mean the guys here act like the cooling system was filled with pure sulfuric acid.
@@MajenkoTechnologies Oh, and for everyone not knowing that: denatonium benzoate is just to make it taste bitter, so kids don't drink it, especially because ethylene glycol has a sweet taste but is also pretty toxic.
Happy new year Ken!!! Im happy to see this Mac again!
Awesome to see it finally running after all this time! Great video!
Watching you two is like watching two cavemen trying to ignite a fire and being in awe when they finally succeed.
"Kensored" always makes my day
THIS is where the skill of microsoldering comes in handy! send that bad boy to me and ill happily solder it back on for you!
I had the same thing happen on my work G5 PowerMac. One day I turns it on and it went *pop* and a puff of smoke trickled out the vent.
"IT BONGED" I love this quote
Good to see someone who knows their way around a mac. Nice job. Laughed at the juicy corrosion line Ken.
As far as I remember, failing power supplies were a rather common issue with the PowerMac G5 - not just with the liquid cooled models? I like Greg's grim sense of humor as he assesses the extent of the mess 😄
even 2 years later this is still one of the most funniest episodes i have seen
The look on Ken's face at 22:02 though 💀
Ok you guys Rocked that repair really fun to watch and a very good ending please post more about how that G5 is working!
Has there ever been a water cooled PowerMac G5 that didn't start leaking? I have never seen a single one, and this was already an issue 15 years ago, when they were still sold!
I remember back in the day they were notorious leakers.
Liquid cooling was just a commercial move to sell stocked G5s in bulk before the arrival of Intel Mac Pros.
There is not a single G5 that needs LCS to function. The large heatpipe heatsinks were sufficient and in the Apple and IBM G5 servers the heatsinks were even smaller.
I disassembled LCS from my 2.7Ghz and mounted the classic heatsinks.
The 2 ° G5 at 2Ghz has very efficient air dissipation and the iddle temperature does not exceed 48 ° celsius and 60 ° at maximum continuous power for 3 hours during the summer in a room with 28 ° celsius.
The very first G5 built at 130nm (like the Pentium 4 Northwood) were very hot but let's remember that they were always 2 cpu.
Then came the 90nm G5 970FX versions and the temperatures dropped further.
In 2005 the 65nm technology allowed to insert 2 cores in a single die, and Apple presented the G5 Dualcore (1 physicalcpu) and the Quad model with 4core (2 physical cpu), it put the crap of LCS in it and it passed for a super computer (it was equally so if they had air-cooled it but breakdowns would have been rarer and those who spent 3900 dollars for a Quad would have spent 2499 dollars for the Intel version the following year)
You really should neutralise all the ethylene glycol with some dilute white vinegar. Just like when dealing with corrosion from a leaked battery.
19:06 Don’t fu(kensored)k with me
-Krazy Ken, 2021
Good job fixing this, you created a true Frankenstein of parts from not one, not two, but three Power Mac G5s!
And who the hell thought it was a good idea to use corrosive _and_ *conductive* coolant ?
Really cool video guys! I was thinking of repairing my G5 dual 2.5 GHz LCS but I hear so many horror stories about it. It's currently not running as both CPUs and the PSU have corrosion. I have a donor PSU and two 2.0 GHz CPUs that I'll be resurrecting for my project! And thank you for the link regarding where to get ASD 2.58. Big kudos!
Thanks for the premiere! I really enjoyed being in the live chat 😁
Lucky the CPU die has infill under it, that would save a lot of those processor cards. IPA works for some things but a cotton bud dipped in some vinegar dabbed onto corroded parts works great for tougher stuff. You generally don't even need to scrub, just let it sit and wipe it gently and the corrosion should come off.
I'm sorry but who the hell at Apple thought it was a good idea to cool a computer with GM Dexcool?? Especially given that the controversial history of it started becoming public news right before the G5 came out.
Imagine if Apple tried using gallium (liquid metal) as thermal compound on MacBooks during the difficult Intel thermal throttling days?
Worked for Sony... (For now at least)
@@virtualtools_3021 The difference is the PS5 isn't 99% aluminum unlike almost every MacBook since the mid 2000s. Gallium is like a cancer to aluminum, even if a small amount of it touches aluminum, it quickly weakens and destroys it
@@TRLTheRandomLab yeah it's awesome, plus it makes it become dangerously reactive with water to produce flammable hydrogen gas
@@TRLTheRandomLab Only if there's a scratch on the AL, that it really gets dangerous.
The main issue is, gallium spilling on the board and doing what conductive liquid does
I COULNT WAITTT FOR THIS TO COME OUTT
I air cooled my DP 2.7. It worked, but it has odd behavior where, even after a proper thermal recal cycle, the system doesn't properly control the fans while running TenFourFox or other 3rd-party apps (the fans run but only at idle speed regardless of actual processor temperature) unless an Apple program (iMovie, iTunes, iPhoto, etc) is also running, at which point the system revs the fans up until temps are back to normal range and then properly throttles them to maintain normal temps so long as the Apple programs stay loaded. I have no idea what the deal is with that and I'm not the only person to notice this effect with an air cooled swap so I doubt it's something specific to me. Maybe it's just a Tiger thing? I haven't tried it with Leopard yet and indeed haven't touched it at all in a while (I have a DC 2.3 for regular G5 duties). It may be worth having another go with Sorbet or something to see if that improves things at all.
YAYYYY HRUTKAY! So I normally find this channel 'just tolerable.'
But with Mr. Hrutkay on board I find it interesting.
Am guessing he's happy coz he doesn't have to do all the video setup.
And you're happy coz your video is much, much improved.
Perhaps you could make this arrangement more permanent?
When the 8-Bit Guy talked about this, he showed the fans constantly going full blast and sounding like a hurricane. It was really funny when he talked about how he had an Intel-based Mac Mini (released just a few years after this big beast) and yet it was more powerful than this big, heavy, noisy giant. At the end, he wondered why anyone would want to even have this in a collection.
Ken looks likes he didn’t listen for the whole first part of the video. Lol
18:46 Was... was this an 'Is it a good idea to microwave this' reference?
I love the G5 case, always wanted to build a modern gaming sleeper setup into one of them
19:01 lol I watched sooo many times and still laughing so hard!
Bar far one of the funniest Computer Clan videos I have seen!
Happy new year friend
Power Mac: POP!
Ken: Crash Bandicoot WOAH
Love your friend man. I know, I am a late comment, but I love his vibe. Reminds me of that ever friendly redneck who is a wizard with the engine as he sits above the open hood of a car. This guy here? Nice....same vibe....but instead of face deep in an engine block? He is down and gnarly with the screwdriver and makes me think of what could happen if an auto mechanic got fused with a computer geek. Rock on man. ++++++Yeah, I open up and clean out all my computers in my home as well. Small thin old office Dell running Linux Mint and two other gaming rigs running newest Windows. Thank you for a great video. :D
I remember Cray mainframes using a synthetic (blood) plasma to do total immersion liquid cooling....
I never understood why Apple wanted to liquid cool this PC. If they designed a good case, they wouldn't need it at all. Their lack of experience in designing liquid cooling systems was their downfall.
The G5s ran VERY hot, and watercooling in general wasn't much of a thing for computers back in the early 2000s, much less in a prebuilt machine (I believe these were the first factory watercooled machines on the market).
the one bad cap will no doubt have zero impact on the functionality of that G5 unit
Nice! Keep Up The Good Work! And When Is Brainiac Brent Coming Back?
i craved seeing that other cpu board getting fixed, theres always a way to solder those back on
man i love the trance music in the intro
😂😂😂😂😂I knew he will do that, Ken!!! You guys rock!!
Cmf😊
Hi Computer Clan, I have a Power Mac PRO G5 and sometimes turn on and the other times the fans keep running at full speed but computer does not turn on. Could you please give me any idea of what is the problem? Thanks in advance.
I just got a g5 quad with a non leaking LCS…I’m going to remove the cooler to inspect better and flush the system. That said, do I have to use dexcool or am I able to use another coolant?
Amazed that the G5 (well, kinda) they used in the Xbox 360 was more powerful than any of the CPUs used in the PowerMac G5, while also being significantly smaller.
Not having ultrasonic cleaner is one thing (even though you're a collector of old tech) but not having a soldering station is ridiculous.
Kensored is a nice touch :)
have you replaced the capacitor?
Fun episode!
Thanks.
I love how delighted with themselves they are :)
glad you guys go to fixing it
I think I’ll just play the “let’s hope my g5 quad 2.5 doesn’t blow up before I can find a good example of a 2006/08 Mac Pro to replace it” game
I fell over laughing when he made the is this a good idea to microwave this reference
Just put a Raspberry 5 and a fridge for beer cans into it. This will give you thumbs up at any LAN Party.
You should have slapped your hand on the table when ken switched it on. Lol
I was yelling at screen (amongst other people here), "Put that acrylic deflection board on! That will stop the fans blowing at full speed!" I believe the sensor is on the leftmost hole (to the front) where the deflection board has a small metal strip on it to activate the sensor. You can replace the sensor if faulty, but out of the hundreds of PowerMac G5s I've pulled apart I have never replaced a sensor.
Great Video ken I Knew Greg Could. Fix It
there's probably a civilization under his desk right now
As someone who exclusively worked on on traditional PCs this is like watching an alternate universe.
Put on Craigs: "Almost new, some scratches and dust, 'fired up' last time I tested Sold as is. No low-ball offers! I know what I got"
I remember these, they came out in 2004. They caused me a few service calls because they refused to connect to a cable modem.
I have a late 2005 model G, that I got second hand with 10's of thousands of dollars worth of a myriad of professional audio/video/graphics production software, circa 2005/2006, and due to the nature of what sort of work I do,.. that thing has never become totally obsolete,... It can do so many things that my newer stuff can't,... either cause there's no acceptable equivalent software available, or cause I simply can't afford to buy it's contemporary equivalent.
Ahh good I was really hoping for a follow up video
R.I.P. PowerWheel G5
Wouldn't it help a bit to use hot air on the capacitor before scrubbing? To help what's left of soldering to stick to the board a bit more.
I can see how he would plug in the system which was working before it was shipped without realizing it was liquid cooled and that the liquid had leaked. But what I do not understand is once you know it had leaked, why would you wait two years before trying to clean it up? It probably would have been in much better shape and take a lot less work just to clean up the liquid right away. Corrosion happens over time. Clean up leaks and remove bad batteries ASAP.
THE RETURN OF THE KING