Swapping out fans in a dual 1ghz mdd

I am considering swapping out my fans in my G4MDD. I have downloaded the CHUD tools, I forget which version, and use the NAP feature in the hardware preference pane. would it be feasible to swap out fans or is it safe to keep using the NAP feature. I notice that when I use some apps like dreamweaver that I get a low key sounds coming from my system when NAP is on. When NAP is off, I get no sounds but my temps run high to the point where all fans turn on and it sounds like a wind tunnel. any recommendations on what fans I should get? I have no idea what is in my G$ and have no clue how to find out...

Thanks for your replies Patrick.
Perhaps I got caught up in the excitement of "squeezing" as much as I can from my trusty MDD. I'll wait and see if the prices go down.
In the link you posted, ... "is the need to change the resistor due to the fact that the single 1.25 GHz MDD has a 133 system bus?
Jacobo
Message was edited by: Jacobo

Similar Messages

G4 Dual 1GHz MDD slows to creep then freezes

I have an employee running MacOS X 10.4.7 on a G4 Dual 1GHz MDD with 2GB RAM. This employee is having problems with the system slowing to an absolute crawl, where there are delays even in mouse movement. The system then finally locks up, and the only way to restart it is manually. Over the past couple of weeks, I have done a clean install, replaced the hard drive (because the original one completely died), and replaced all of the RAM. I have run disk and permission repairs multiple times, and have wiped out the cache multiple times.
The only thing I see left to replace is the video card. Could this be the culprit, or do I need to look at replacing the system with a new Mac?

The only background applications that have been installed are Retrospect Backup Client, and FontAgent Pro, both of which are installed on every other Mac at the office.
I have not run memtest or any other memory tester, however, the fact that I can take a complete set of RAM out of an identical machine that is stable, put it in this one, and have it still crashing should cancel RAM out as the cause of the problem.
I replaced the hard drive with a 250GB Western Digital. It is the only hard drive, so their should not be any IO conflicts between it and other drives. I have used FSCK, Disk Utility, and Drive Genius to check the drive and they all say it is good.
There are no 3rd party PCI cards installed in this system.
This Mac is configured just like all the other identical ones in the office. In fact, due to just having a clean install performed, it is even cleaner than the others.
I have reset the PRAM and NVRAM. Sometimes after resetting these, the system locks up before the gray apple even appears, requiring me to run FSCK. I have not reset the PMU yet.
Is it possible it is a bad video card? I know an inexpensive card can be obtained for testing, but my main concern is the time it will take to get it in. I don't want to waste that time if it is obvious the video card is not the answer.

Replacement Motherboard for Dual 1ghz MDD G4

My original motherboard for my G4 is toast.
What replacement Motherboards are compatible with my dual 1ghz
mdd G4?
The white sticker on board reads: 630T3984/630-4256
Thanks
Eric

Ouch, I was hoping it wouldn't be one of those.
I think it has to be the same. My info comes from an Apple document discussing CPU upgrades.
Wait ... quoted -
Before Replacing the Processor
Important:
Apple has determined a compatibility issue between the processor and certain
fabrication levels of the logic board on some Power Mac Server G4 (Mirrored Drive Doors)
and Power Mac G4 (Mirrored Drive Doors) products. Before ordering a replacement
processor for those models, follow these steps:
1. Open the computer and check the fabrication number that is printed on the logic
board. The fabrication number is easily visible at the edge of the board near PCI card
slot 5.
2. If the logic board fabrication number is 820-1308, 820-1440, or 820-1445, do
not
order the processor module. Instead, you must replace both the logic board and the
processor by ordering the combined module: Module Set, Logic and Processor (Apple
part number 661-3654).
Replacement Warning:
When ordering this combined module set, a returned logic
board must match one of the three fabrication numbers (820-1308, 820-1440, or 820-
1445). If the logic board does not match one of these fabrication numbers, it will be
rejected.
3. If the logic board fabrication number is any other number (
not
820-1308, 820-1440, or
820-1445), order only the multiprocessor module (Apple part number 661-2730).
So make of it what you will. If your email address is in your profile, I'll email the whole document - it's a bible for MDD owners - shows you how to remove and replace everything, with photos. It's only 3.3MB.

Can a 1.42 GHz processor (MDD FW800) be fitted in a dual 1GHz MDD?

Hi there,
I saw on eBay a couple of these 1.42 for around $180. I noticed that the heat sink is copper-based and different to what my MDD has. Can such modification be done? If so, what thermal paste, etc.?
Thanks a lot,
Jacobo

Thanks for your replies Patrick.
Perhaps I got caught up in the excitement of "squeezing" as much as I can from my trusty MDD. I'll wait and see if the prices go down.
In the link you posted, ... "is the need to change the resistor due to the fact that the single 1.25 GHz MDD has a 133 system bus?
Jacobo
Message was edited by: Jacobo

G4 dual 1Ghz MDD dead?

My G4 wouldn't start. Found the battery at 2.2v, so I replaced it. Now when the power button is pressed:
- power button light on
- fan on (some variation in fan speed)
- startup chime
- black screen
- no normal disk activity (might spin up, but hard to tell)
- 5 sec. press of the power button shuts it down
If I remove the battery, press the PMU reset switch, or remove and replace the battery, then the 1st startup is a little different:
- power button light on----off----on
- power button brightens during the 5 sec press to shutdown
Tried removing extra RAM DIMMs and second HDD to return to factory configuration; same result as above.
Tried startup with cmdoption+PR to zap PRAM and did NOT get the expected second startup chime, just the same as above; does this mean startup is failing very early, before any attempt is made to load OSX from the disk?
Any suggestions?
Thanks for any help,
Lil Davie

The keyoard and mouse are the Apple originals that have worked for the past 5 years, so I doubt they are bad.
Most likely so, but carefully inspect the wires for crimps, or kinks that are severe. Shorted wires will compromise the system.
Test the keyboard on a different machine to confirm the keyboard.
Try a different USB port.
Try with only the mouse connected directly to the tower.
A normal boot starts with a grey screen and small, centered, animated circle graphic; does the POST happen during this time?
Often referred to "the spinning gear" is what you are seeing, I believe....
POST happens immediately on power up, prior to startup chime.
Starting with keys cmdoption+PR, cmdoption+OF, and [C] all give the same result: power button lit, fan on, start chime, black screen.
Indicates bad keyboard, bad keyboard connection, bad USB port, or bad USB bus (which means logic board), bad logic board, or bad CPU, but not necessarily in that order.
Should I expect the CD drawer to open when starting with the C key?
Yes, or when the mouse is depressed (click hold) during startup.
Given I get no screen image at all, could I expect the G4 to boot from a CD inserted in a manually opened drawer?
The AHT diagnostic uses base systems to operate, which is enables the test to be run when there are hardware problems.
I assume I cannot use the hardware tools until I can boot from CD; yes?
Failure to respond to mouse or keyboard commands does remove the ability to test with diagnostic software.

Power Mac G4 MDD: Swapping out motherboards

I have two G4 MDD's. An FW800 dual 1.25 GHz which just blew the power supply(the 23 pin connector fails to get 25V). And I just bought a used MDD 2003 which is, so far, running fine.
I have a reasonable amount of electronics know-how. And I'm learning to do my own PowerMac 'tech' work since I got the FW800 two years ago.
So, how do I swap the dual 1.25 board for the 2003 single 1.25 board without 'winging it' into disaster.
I will appreciate instructions.
Shamus

I've done many power supply swaps and removals.
It's easier to just swap the power supply.
However, if you've gotten this far, why not stick with the original cpu and logic board.
On the other hand the other logic board may work as it has a 167 bus as well.
I personally have swapped dual 867 cpus into fw800 motherboards from 1ghz units as they are both 133 bus. Also used 1.25ghz logic board to replace a dual 1ghz cpu logic board as they are 167 bus each.
Still say if you got this far just replace with the originals.

Dual 867mhz MDD G4 & Dual 1Ghz G4 Quicksilver: Near Perfect Installation

I installed the family pack on both my desktop G4 towers (Dual 867mhz MDD G4 & Dual 1Ghz G4 Quicksilver) and had almost ZERO problems.
I opted to upgrade my OS X 10.4.10 systems.
Both installations (upgrades) were without a problem, except for one minor keychain glitch:
MDD Dual 867mhz G4: After installation and restart, the keychain seemed to have forgotten my passwords for my POP email and my iChat (AIM) accounts. I simply cleared the keychain (as prompted) and re-entered the passwords (opted to save them) and all is well.
Quicksilver Dual 1ghz G4: No keychain issue. Passwords were retained just fine.
Every piece of email, settings, music, files, folders, apps, etc were all retained just fine on both computers.
All my Adobe CS2 suite apps, MS Apps are just fine.....as does my Final Cut Pro software.
The only software that "broke" was GOOGLE EARTH. I simply just downloaded the latest version and all is well again.
Approx. Install time: 1hr.
Note: If your computer stalls on a blue screen (my computers did this on TIGER install), let them go. More than likely it's "finishing" the installation and probably cataloging the hard drive for Spotlight.
This Leopard OS Rocks! I can't wait til they fine tune it with a 10.5.1 update release

I put Leopard on a Dual 800 and a Dual 400.
Leopard pushes the limits of the 400. The 800 runs pretty well.
I mean it is slower in some places, but I assume that will be fixed in updates.
(for instance... my cursor is sticking to links in firefox and it kills my CPU usage)
Everything else works great.

I have a Power MAC G5 dual 2ghz that has a peculiar problem. The monitor will not report until the machine is stopped and started 5 or 6 times. Once booted it will restart without problem if done so from the apple menu. Swapped out all hardware

My Power MAC G5 has a peculiar problem. The monitor fails to report until the machine is started and shut down 5 or 6 times. Once it has booted it can be restarted without incident from the Apple menu. I have swapped out all of the hardware. Monitor, Memmory,Video Card and reset the PRAM. After resetting the PRAM it booted on the first attempt and I thought it was solved. But the next day it was back to starting and stopping until the Monitor came on. Does anyone have a suggestion? Thanks

It could be a bad PRAM battery corrupting your PRAM. Typically when I have monitor issues on startup it is a bad PRAM battery.
Texas Mac Man's PRAM, battery, PMU tutorial - https://sites.google.com/site/macpram/mac-pram-nvram-cuda-pmu-battery-tutorial
Apple's PRAM reset directions - http://docs.info.apple.com/article.html?artnum=2238
If you have a digital multimeter you can check the condition of your present battery. It should read at least 3.2V if it is the 3.6V half-AA battery type. A new battery provides 3.67 Volts DC. A bad battery provides under 3.2 Volts DC. Ideally this should be measured while the battery is under load; added recommendation from Hans777:
>I have recently found out that an exhausted battery will still indicate >3.6 V with a high internal resistance VM.
>
>Checking incircuit: powercord disconnected press PMU reset button for >about 5 sec before measuring.
>
>Checking outside: load the battery with a 1500 Ohm resistor when measuring.
Alternatively, test the battery while it is still in the computer.
If the battery is more than 5 years old, especially if you totally disconnect the computer from the power regularly, or have left it unplugged for several months at one time, it is likely the battery is dead.
Sometimes you have to do a more intensive reset of hardware management:
[Resetting Cuda/PMU on Power Mac G5, Power Mac G4, Power Macintosh G3|http://support.apple.com/kb/HT1939]
[How to reset the SMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005)|http://support.apple.com/kb/HT1436]
[iMac G5: How to Reset the SMU|http://support.apple.com/kb/HT1767]

Swapping out G5 tower parts with another G5 tower?

I have a 2.0 Ghz Dual PowerPC G5 (3.0), 512 KB (L2), 4GB Ram with a 1Ghz bus (June 2004 model).
Serial # G8438CKYQPR
Is it possible to swap out the ram, video card and hard drive and put it into a 2.0/2.5Ghz Quad PowerPC G5 (Early - Late 2005 Models)?
Want to know if they are compatible before I have this attempted?
Any help or advice would be much appreciated.
Thanks,
BboyTV

Hi,
The Quad G5 is out, as well as the other Dual Core G5s, they use 533 MHz PC2-4200 DDR2 SDRAM, where the 2004s use 400 MHz PC3200 DDR SDRAM, & PCIe Video card instead of AGP video card on the 2004s.
The early 2005 Models should work, this is he fastest one...
http://www.everymac.com/systems/apple/powermac_g5/specs/powermac_g5_2.7_dp.html

PMG4 dual 1ghz wont start up

I'm working on a MDD dual 1ghz. It wasn't starting up...the power light would come on for a second then turn off, then the fans would start spinning. after a couple of seconds it went into wind tunnel mode.
we ordered a replacement power supply, which i put in today. and it still wont start up. same problem. I checked the voltage on pin 24 (with the computer off as it says in the troubleshooting guide) and it was 0 volts, not 12.
I suppose it's possible the new power supply was DOA, but does anyone know if the logic board might either be the reason its not booting, or if the logic board could kill the power supply somehow?
Mac OS X (10.4)

I have the same situation with a single 1Ghz MDD. No chime, power to all fans and HD is ok, but front light only stays on for a couple of seconds and after about 10 seconds, cooling fan shifts into high gear. No video either. I also tried another power supply, but the same thing happens. I guess the question is: 1. Is it possible that both power supplies are bad? 2. Is the motherboard bad? or 3. is the processor bad. Since I don't have another MDD handy, I can't play 'switch the parts" to test each. What else can I do? Can I use the known good power supply from an earlier G4 to test? or are the contacts wrong?
-RicK

G4 QUICKSILVER 733MHZ TO DUAL-1GHZ

#1 Will the QS dual 1-ghz card work in a 733mhz quicksilver server model with no change to the system board? can i just put the dual 1ghz in the 733mhz QS?
#2 Will the 64mb video-card from the QS Dual 1ghz work in the 733QS with a 32mb video-card now? and can i just put it in and will it work with no new drivers or jumpers?
#3 will all of that overload the QS 733mhz psu? i just found a 733QS server for $95 i think i over paid for it but i con not find a psu for the dual 1-ghz so i bought a qs 733mhz because i did not know if it was the psu or system board i know i can put the psu in the qs 733mhz in the dual 1-ghz but i do not know if the system board blow the psu? and i do not have any more $ for computers or parts. or wood it be better off just to leave the 733mhz qs alone? i do want to run leopard and ilife '09 on it but if something goes bad i will not have any qs so i can live with just leopard or tirger if i can use LeopardAssis app does it work in a qs? but i wood like to use the dual-1ghz in the qs 733 so i can use ilife'09 and not have to use a 3-party app to install leopard.
#4 i have a old post but i needed a new topic so i made a new post so it is easyer https://discussions.apple.com/thread/3071835
By-The-Way thank you japamac for all your help

Well i put the dual 1ghz in the 733 qs. and it blown the psu i guess the cpu is bad i just put out anouther $50+ for a new psu but when i put the 733mhz qs cpu back in i forgot to put the fan and the heat sink back on the cpu still works i puled the plug very quick. but the thermal paste is now gone on it i will get new thermal paste for it. do i just put the thermal paste ontop of the cpu top or on the heat sink? but the video card works very good from the dual 1ghz in the 733mhz qs
japamac wrote:
Will the QS dual 1-ghz card work in a 733mhz quicksilver server model with no change to the system board? can i just put the dual 1ghz in the 733mhz QS?
Yes.
You just need the dual processor heatsink.
Will the 64mb video-card from the QS Dual 1ghz work in the 733QS with a 32mb video-card now? and can i just put it in and will it work with no new drivers or jumpers?
Yes.
Plug and Play.
will all of that overload the QS 733mhz psu?
No.
No worries at all.

Swap out 1.25DP for 1.42DP?

Hello everyone,
Happy Columbus day holiday to everyone(for Monday). I have presently a Power Mac G4 MDD 1.25DP machine with 2GB memory. Is it possible to swap out the 1.25DP for the 1.42DP, and if so, what kind of speed/performance am I really going to see? First off, is it worth it? 2ndly, will I notice anything at all with the DP 1.42 in place of the 1.25DP? Bear in mind, I am not looking to go to another machine, as I just got this MDD machine and love it very much compared to the G4 Digital Audio machine I have.
I did some research and it appears that the dual processor 1.42 has the same bus speed as the 1.25DP MDD machine. Therefore, is it possible to swap out the 1.25DP and insert the 1.42DP? I also noticed that the bootROM is different on the 1.42DP machine: 4.6.0f2 versus 4.4.8f2 on my 1.25DP machine.
bottom line: from a DP 1.25, is it really worth it to go with the 1.42DP? What percentage of performance gain will I see, and if at all, can it be done? Money is not a problem for me, as I saw this processor and heatsink for less than 250 on ebay a few nights ago.
Thanks,
Nadav

Hi Carl,
Thanks for the reply. 13.6% doesn't really seem a whole lot in performance/speed gain, does it? Anyway, I did call a technician from colorado and he told me about 10-15 percent is all I would notice, and that for each 100mhz up to 500mhz, the speed and performance is really really miniscule, so as of right now I am now concentrating my efforts on getting just the copper heat sink as it has a cooling pump which should aid in lowering my processors down a bit further. Although, as I type this temp monitor reports the cpus running at 92.8 degrees fahrenheit. Now, another thing thats bothering me is the internet speed. My roommate has comcast high speed wireless - doesn't seem to be high speed though it is. Problem: I periodically lose connection or it slows down and gets sluggish.
I am using an airport extreme PCI card(802.11g). Its a Belkin FD57000 card which is similar in speed and strength to the airport extreme card by apple.
Is there a way to boost the wireless performance of a PCI wireless card, or better yet, boosting the performance of wireless internet at all? That seems to be the only bottleneck I am experiencing. His computer which is in the other room not too far from me is a PC running windows 2000 professional and he has a white wireless router.
periodically, I have to turn it off and turn it back on just to get the thing to speed up, but is the problem associated with my card or my mac? I don't think it is, but I was wondering if there is a way to boost speed performance of wireless service. Personally, I prefer wired since really its better and more secure + it NEVER EVER(at least when I had it at one time) dropped service at all.
Thanks Carl,
Nadav

Replacing Power button dual 1G MDD

The front panel power button on my Dual 1Ghz G4 MDD is getting "flaky". I have to push it a bit sideways and to the right for it to work. Any words of wisdom on how to replace the assembly and where to buy it? The local Apple store is only "allowed" to do trades. I bring them the bad assembly and leave it with them, then they will order me a replacement. That could take "a few weeks". When I pointed out the obvious (that I would then have a computer without a power switch) they obviously understood but couldn't do anything about "policy".
Thanks,
Tom

Hi
Instructions for replacing the front panel board can be found here:
http://www.info.apple.com/usen/cip/pdf/g4mdd/g4mdd-fpb.pdf
Unfortunately it's a bit involved as the optical drive carrier and optical drive bezel have to be removed first.
I've never used them before, but the following is one company that seems to have the part for around $50:
http://www.mac-pro.com
I'd double check the problem is with the front panel board and not the button itself in the bezel before you buy anything though. I guess it's possible it's just gunked up and needs a clean.

Occasional Freezes on QS Dual 1ghz

Hi,
I recently acquired a dual 1ghz quicksilver that has had its RAM upgraded to 1.5 gig from the original 512. It has also had an extra USB/Firewire card installed in it. Every now and then it freezes up. A restart fixes it, but it is kinda annoying. I'm thinking that this might be a RAM issue but thought that i'd come here and ask what everybody else thought.
-Thanks
Andy Phipps

Well i put the dual 1ghz in the 733 qs. and it blown the psu i guess the cpu is bad i just put out anouther $50+ for a new psu but when i put the 733mhz qs cpu back in i forgot to put the fan and the heat sink back on the cpu still works i puled the plug very quick. but the thermal paste is now gone on it i will get new thermal paste for it. do i just put the thermal paste ontop of the cpu top or on the heat sink? but the video card works very good from the dual 1ghz in the 733mhz qs
japamac wrote:
Will the QS dual 1-ghz card work in a 733mhz quicksilver server model with no change to the system board? can i just put the dual 1ghz in the 733mhz QS?
Yes.
You just need the dual processor heatsink.
Will the 64mb video-card from the QS Dual 1ghz work in the 733QS with a 32mb video-card now? and can i just put it in and will it work with no new drivers or jumpers?
Yes.
Plug and Play.
will all of that overload the QS 733mhz psu?
No.
No worries at all.

Help with setup of G4 dual 1ghz AGP system

Hi,
I bought a stripped down G4 dual 1ghz machine off eBay.
When it powers up, there is no beep and the display does not fire up. I have tried a variety of video cards (PCI and AGP) that I have hanging around.
What I have:
10,000rpm 15gig scsi drive and adapter card
7200rpm 80 gig ide drive and adapter card
Original cd/dvd drive
512meg sdram
When I power on, the fans and drive power up. A red light on the motherboard is on. The usb attached keyboard does not seem to have any power (the little light doesn't turn on when I press caps lock)
I am trying to install the operating system. The install disk is in the drive. I have tried resetting the PRAM and PMU with no results.
I am kind of new to the Mac world. Anyone have a starting point for me?

Disconnect the drives, that part will come later. Concentrate on getting the machine to chime and light up the screen. The chime is generated in software when at least 1K of RAM is working and the processor can execute an instruction test without getting lost. It should be able to chime and light up the screen to show the flashing question mark with no drives.
Remove and re-seat anything with a connector on it. Use anti-static procedures, especially when handling RAM and Processor. The Dual 1 GHz uses the 167 MHz Bus, so it needs DDR 333/PC2700 memories. Were you thinking of buying more memory? getting another module now would give you more stuff that is "Known good".
The single 1.25 GHz processors are simpler, run at the faster (167 MHz) Bus speed, and are a little cheaper if you need to buy on a "Known good" processor for testing.
There is a G4 diagnostics CD image available for download, but you need it to chime and light up the screen first.
The 10.4 CD has Apple System profiler available, and its reports include a "diagnostics" report.
almost forgot: You need 3.2 Volts out of that 3.6 Volt 1/2 AA battery. You can try removing it for testing, but you will need one with at least 3.2 Volts for daily use.
Message was edited by: Grant Bennet-Alder

Swapping out fans in a dual 1ghz mdd

Similar Messages

Maybe you are looking for