Working on the G5 quad liquid cooling system

No, it wasn't a freebie. I bought it directly from the developer, "Marcel Bresink Software-Systeme":

http://www.bresink.com/osx/HardwareMonitor.html

screenshots at:

http://www.bresink.com/osx/216202/screenshots.html

Ramón G Castañeda wrote:

TEST.

My posts are disappearing.

Ramón,

Looks like your posts came back in force 😉 . I had the same thing happen last night when I finished a post and clicked the "Add Reply" butoon, the site choaked on it and said there was some kind of error. The site probably was down during that time. Before you reposted the links for me to Hardware Monitor, I actually had done a search and found it. But thanks.

G5Lover wrote:

Ramón G Castañeda wrote:

TEST.

My posts are disappearing.

Ramón,

Looks like your posts came back in force 😉 …

Whoa! 😮 I hope the moderators can delete the multiple postings. 😮

Yes, it was server error. As a matter of fact I hadn't been able to see any posts after the one where you asked about where I got Hardware Monitor until seconds ago, despite my trying a gazillion times last night and again today; not even yours from this morning. Bummer!

This is where the "T" fitting is. As far as the coolant. I have seen the pink stuff always, always cause corrosion,build up on anything it touches if left without maintenance. A lot of import cars use it. Apple used it and my system was very clogged. Always see good things with Dexcool.

nospoonzz,

Thanks for the pic. I kinda figured you must have put the "T" on the return since you replaced the aluminum return pipes with hoses.

The pink coolant was what came out of mine also. I only flushed the "B" side cooling circuit of my LCS, since the "A" side was not overheating at all. I opted to not invade my entire LCS original pipeing unless necessary.

Turns out I got lucky at my guess and only the "B" overheating side needed flushing. Of course the "A" side that still containes the original Apple coolant mix will sooner or later need flushing. Probably sooner! But now I am comfortable with my proceedure, so it should be pretty straightforward for me.

Ramón G Castañeda wrote:

😮 More weirdness:

When logged in to reply, I can reply but then I cannot see any messages after the one quoted below. Not even the ones I just posted.

But when I SIGN OUT, I can see all of them. This is repeatable at while, and happens both with Firefox and with Safari.

Ramón,

That's why when posting on forums I rarely type my post while logged in. Many times the forum host's server has a log in time limit and if you take too long it loses you by the time you end up actually posting or the server goes down and loses you.

I type my posts off-line in a text doc. then go on-line and post them quickly.

HELP!

I still cannot see any posts in this thread after G5Lover's post from Jun 10, 2013 10:51 PM when I'm signed in. I need to sign out in order to see the later points.

Tried Firefox and Safari on different machines and different versions of the OS,

If anybody reads this, would yo be so kind to bring it to the attention of the moderators?

Thanks in advance.

Ramón G Castañeda wrote:

HELP!

I still cannot see any posts in this thread after G5Lover's post from Jun 10, 2013 10:51 PM when I'm signed in. I need to sign out in order to see the later points.

Tried Firefox and Safari on different machines and different versions of the OS,

If anybody reads this, would yo be so kind to bring it to the attention of the moderators?

Thanks in advance.

Ramón,

Try clearing all your cache, cookies, form & search history, active logins, etch in your firefox and Safari browsers. Also, Log off your machine and do a restart.

Your cache may have gotten funked out when the server when down and it's remembering inaccurate data when you log in.

nospoonzz wrote:

Off topic a bit. But I reinstalled tiger and I think I will stick with it. Seems a lot faster to me for what I do and the temps are nice.

Not off topic. You mentioned the word temps, 😉

I feel better that you put some coolant in there. 🙂

Have done that multiple times already and, besides, as I said earlier that happens on several different machines. :-(

Sorry I can't even quote you, but I can't see your post right now.

Only this thread appears corrupted to me, btw. It's a puzzlement. 😕

Ramón G Castañeda wrote:

Have done that multiple times already and, besides, as I said earlier that happens on several different machines. :-(

Sorry I can't even quote you, but I can't see your post right now.

Only this thread appears corrupted to me, btw. It's a puzzlement. 😕

That's very strange indeed. 😕

Wondering why I haven't had it happen on my end.

Oh, that can be sooooo annoying! I hate drives and computers that go to sleep. I have both options set to Never in System Preferences > Energy Saver. Yes, I do let the monitors go to sleep, but those are readily noticeable. 😀

Besides, I've never had anything but unmitigated grief from the computers and drives sleeping and then waking up.

Glad you figured it out.

Ramón,

I've always set my drives to sleep after 15 min of no usage. I figured it would cut down on the wear of the drives. However, after your comment I'm now re-thinking that.

I to have noticed problems assoc. with the sleeping drives. They sometimes have trouble waking and cause periodic program crashes and SBOD instances—(PS & iMovie HD in particular). I've set PS to use the second drive as a scratch disk since I installed it last week. Even more so, now I think I will go your route and take the lesser of the two evils and leave them running. :-)

Thanks again for your input. Much appreciated.

-Art

Flush Repair Update- 7/19/12

Thought I'd check in and report the latest performance of my G5 Quad since flushing the radiator "B" side core back on 5/20/13.

I've noticed a slight climb in temperature again with the "B" core processors. After the radiator flush, all 4 cores ran within a maximum of 4º of each other, ("B" cores slightly warmer) for a little over a month. The fans would only slightly increase speed when loading the processors with tasks. After a processor load, both core temps would recover quickly, and the fans would also quickly quiet down. The "B" cores were always still a apr 4º warmer than the "A" though.

Since then, "B" cores have started running a steady 10º hotter all the time. Still better than it was before the flush and refill but the fans have also compensated, and are now running more often. In addition, under processor load now, the "B" cores heat up real quick and have trouble cooling down quickly. As a result, the temp spread between the cores is around 20º and the fans ramp up to compensate for the imbalance in temp between the two cores. Eventually, the "B" cores are back within 10º of the "A" but the fans are running slightly faster. The extra fan noise is annoying. This also creates more wear on the fans. 😠

It appears that I didn't flush ALL of the gunk out of the "B" core side of the rad. back on 5/20. Thats my analysis of the problem anyway. There were probably stray sediment particles that broke lose later and have collected in the filter screen. This would explain the slow heat recovery on the "B" side after a processor load, and the consequent 10º rise. Not enough fluid flow running over "B" core heat block. It would appear that I need to re-flush the "B" side again if I want to correct the problem.

Funny thing is, the "A" core side of the radiator has never been flushed! It's is still running the original Apple fluid and it still runs cool. Knock on wood! 😀

I'd like to hear some updates from others on here that have done the flush-'N-fill and how their repairs are fairing over time.

Hello. My temps on CPU A ar 42, and 41 degrees celcius. The temps on CPU B are 42.2 and 42.9 degrees celcius at idle. Under load they climb to 59 to 60 degrees celcius on both CPU A and CPU B. When I flushed my cooling system. I could push coolant from one pump through the other. I do not think the cooling system is seperate for each CPU. At least on mine. The radiator is one big unit, there are 2 water pumps, and there are a total of 4 hoses. My system is still running cool and strong on Tiger. I also have a set of spare hard drives set up on raid 0 on Leopard. Runs pretty cool on Leopard. But the hard drives get warm.