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.

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

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

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.

Dual 1.25 CPU replacing a dual 1ghz

Hi!
Is there somebody who knows if I can replaced the dual 1Ghz CPU (MDD model) by a dual 1.25Ghz CPU (from an other computer that has a dead MDD computer motherboard).
Would it be a direct replacement ?
Thanks

Hi!
Is there somebody who knows if I can replaced the dual 1Ghz CPU (MDD model) by a dual 1.25Ghz CPU (from an other computer that has a dead MDD computer motherboard).
Would it be a direct replacement ?
Thanks

Logic on a dual 1ghz processor machine.

I have a quicksilver dual 1ghz processor machine with 1.5gig ram. The minimum requirement for Logic is a single 1.25ghz processor. It would "seem" like a dual 1ghz processor board would trumph a single 1.25ghz processor. I went to the local Apple store and asked several "genious" and software reps if I could run logic on my machine and the best I could get was "ummmmmm, good question...."
Does anyone know if I can run it? Apple doesn't - and if you buy the software and it doesn't work, you can't return it.

I was using a G4 MDD 1 ghz dual when I first upgraded to LP8. it did work but it was much slower and problematic than LP7. I found a good deal on a G5 on ebay and I am very glad I went that way. You will get a warning message when you instal Logic Studio, but it will work
Don

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

Dual G4, MDD: Cheapest Core Image graphics card?

I have read some of the comments about graphics cards on various threads, but what I'm after is the cheapest card which supports Core Image and will run on my dual G4 MDD.
Any suggestions?
Thanks!
William

William Donelson wrote:
Thanks, Allen.
Is that really the cheapest at $180 ?
Well that's the cheapest card retail card currently available on the market. The other retail card available is the ATI Radeon 9800.
If you don't go retail, then your choices divide basically between:
1. OEM Apple cards that can work unmodified in an MDD
2. OEM Apple cards that can be modified to work
3. Flashed/modified PC cards
I'll take them in turn.
*1. OEM Apple cards that can work unmodified in an MDD*
I think the only OEM card that supports Core Image specifically designed for the MDD is BTO (build-to-order) ATI Radeon 9700. It wasn't available for long as an option, is rare, and is pretty price.
*2. OEM Apple cards that can be modified to work*
These are typically 8x AGP cards for the G5 that can be modified fairly easily (if you don't need to drive an ADC monitor) to work in the MDD. The cards I've seen people try this with are the ATI 96x0 OEM Apple cards: 9600 Pro, 9600 XT. I think the 9650 may work as well, but I haven't read anything.
The modification to work (without ADC power) can be done easily with tape. See here. The ADC port works (provide video signal) with DVI and VGA monitors (with the appropriate inpensive adapters). It's just that to use the ADC port with an ADC monitor (to supply) power the modification is more involved -- see the above linked page.
For awhile OWC sold the 9600 Pro pre-modified. That used to be the cheapest route to Core Image with an OEM Apple card. I use an 9600 Pro, but didn't get it from OWC.
You can at times find these OEM 96x0 on eBAY both modified and unmodified for an MDD. If you want an OEM card make sure it's OEM -- they have DVI plus ADC, with the ADC being the dead-giveaway.
*3. Flashed/modified PC cards*
Some people do this themselves, some people do it and sell them eBay. Some sellers are better than others, some cards are better than others. Some modify the cards with bigger ROM chips because the Apple ROM are typically bigger than the typical PC cards. If they don't swap the chip, they may be using a hacked smaller ROM.
For Cubes, this route sometimes is the easiest, and coolest way to go.

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.

Correct SDRAM, and what is the ram ceiling in a Dual 1Ghz Quicksilver?

Hello all,
Thanks for helping me with my optical drive question earlier. I now would like to ask about ram. At present my G4 1GHz is running OSX Tiger on 256Mb ram. Things run ok, but they could definitely be better.
My G4 is one of the older Quicksilver models and uses SDRAM as opposed to DDR. Specifically it requires:
SDRAM, PC133 • CL=3 • Unbuffered • Non-parity • 133MHz
At first I thought I could simply transfer the larger ram sticks from my old G4 400MHz sawtooth, but the Quicksilver is very picky and doesn’t like any of them. I thought it would be backwards compatible and just slow everything down to the slowest speed memory stick (PC100 in this case), but no... it just didn’t like them full stop! (on a side note, I’ve checked and all 3 memory slots on the Quicksilver work fine, nothing defective there).
Once again working on a shoestring I would like to ram up that memory to 1Gb or 1.5Gb as I have a disc for Leopard and I would like to upgrade to that sometime soon.
So, looking on eBuyer I can see what’s described as ‘Generic’ 512MB PC133 168pin Extra Value SDRAM for £11.99 which I see as great value (here's the link). The only thing I cannot tell is if its the CL=3 variety. This means two questions:
1) Is 1.5Gb the max ram limit for a January 2002 G4 Dual 1Ghz Quicksilver, or is that simply Apple’s ram ceiling at the time? Have people put in say, 2.5Gb on these machines?
2) Is ‘generic’ ram a complete no-no for these machines? I really can’t see why not, but I’m not that knowledgeable either.
Many thanks for your help.
Message was edited by: One Brain Cell

The QS didn't like PC100 because it has a 133mhz system bus. You can use PC133 in a machine with a 100mhz bus, but not conversely.
The max RAM is still three 512MB modules for a total of 1.5GB. That model isn;t one that can exceed the original specs.
2) Is ‘generic’ ram a complete no-no for these machines?
Unless identified as suitable for Mac, most of the generic stuff turns out to be for PC. The site you linked does not provide enough support info, and Googling the "manufacturer's part number" doesn't lead to a manufacturer site, just a bunch of circular references back to the seller's site. Suspicious
You should probably call the seller and ask for someone who knows Mac RAM. In addition to being unbuffered and non-parity, it needs to be low-density.
With such a paucity of key Mac metrics, that listing makes be very nervous. I know RAm is expensive in teh UK based on a lot of psots all over Apple Discussions, but you have to find someone who knows Mac RAM.
There is a great free tool for checking whether any Mac can handle more RAM than the original specs showed. It's the MacTracker database and is here:
http://www.mactracker.ca
I couldn't work these forums without it. It shows all the facts and specs of the machine, and always indicates if the original RAM specs can be exceed. For example, for the USB 2.0 eMacs, its Memory entry is:
2.0 GB (Actual) 1.0 GB (Apple)
Very handy.

CHUD on a dual processor MDD running Leopard (10.5.8)

I finally got around to installing CHUD today and am wondering if some of you folks who have used it for a while might have some easy answers to a few questions.
I first tried version 3.5.2. It installed, but I couldn't adjust any of the settings. I then read on japamac's site that some MDD's could use 4.4.4. I installed that version and it does work (In fact, I'm posting this with one processor tied behind my back). However, there does not seem to be an option for nap mode.
Also, after I toggle between single an dual processor mode a few times, performance in dual mode seems to take a big hit. A restart solves the problem, but I'm wondering if this is normal.
Is there any way to get nap mode to work in a dual cpu MDD running 10.5.8?
Is there any way to get it to stay in single CPU mode when it wakes from sleep?
I read through the discussions at xlr8yourmac before posting this. It appears that some people have been able to get nap mode to work under Leopard, but they are not always careful to mention exactly which version of Leopard and CHUD they are using.

Hi-
When installing CHUD, it is also necessary to run CHUD remover to deinstall previous installations.
If not deinstalled, odd stuff happens.
3.5.2 is the one for dual processors.
Other versions have mixed dual processor support.
This is one of the claims that 4.4.4 works, but I have lingering doubts
http://discussions.apple.com/thread.jspa?messageID=5974655&#5974655
I may need to edit my blog page.....
It takes a script for automatic Nap enabling in a dual processor machine with 3.5.2.
See this thread:
http://discussions.apple.com/thread.jspa?messageID=9030378&#9030378

Dual 867 MDD won't sleep after memory upgrade

Since yesterday my PowerMac G4 Dual 867 MDD has become insomniac. What changed since yesterday is that I installed an additional 512MB of RAM. So far as memory is concerned, there's the factory-installed 512 Infineon module; a second 512MB Kingston module (installed about a couple of years ago, and has been working fine ever since); and a third 512MB Kingston module (the one I installed yesterday) for a total of 1.5GB.
I am aware that sleeping issues can arise for all sorts of reasons (inc. USB peripherals) but it is pretty obvious that in my case the problem is caused by the memory upgrade.
The symptoms: Once I click Sleep on the Apple menu, I can hear the sound of the hard disks spinning down, but the rest of the box remains fully powered. The screen freezes and the computer has to be manually switched off, as the mouse cursor disappears from the screen and the keyboard becomes completely unresponsive.
So far I have tried the following: I have reset the PRAM (no luck there), and have tried switching memory modules to different sockets (basically, the single remaining free slot). I apologise in advance if that second troubleshooting routine might portray me as an ignoramus; I have a good understanding of things but cannot claim to be an expert.
I am a extremely frequent user of the sleep mode, and this issue has taken away from me all the pleasure that comes with a coveted (and long overdue) memory upgrade. I would deeply appreciate any help in resolving this.
Many thanks

Dear Dave,
Many thanks for your prompt response. I ran Rember (Amount of memory to test: "All". All other boxes unchecked - I was running other apps at the time). I cannot understand the results from the log, but I didn't get any feedback at the end of the testing. I attach the contents of the log below:
Memtest version 4.13 (32-bit)
Copyright (C) 2004 Charles Cazabon
Copyright (C) 2004, 2005 Tony Scaminaci (Macintosh port)
Licensed under the GNU General Public License version 2 only
MacOS X (Darwin) running in multiuser mode
POSIX version 200112
Pagesize is 4096
Requested memory: 18MB (19693568 bytes)
Available memory: 18MB (19693568 bytes)
Allocated memory: 18MB (19693568 bytes) at local address 0x02008000
Attempting memory lock... locked successfully
Creating test buffers...
Buffer A: 9MB (9846784 bytes) at local address 0x02008000
Buffer B: 9MB (9846784 bytes) at local address 0x0296c000
Running 1 test sequence...
Test sequence 1 of 1:
Stuck Address : ok
Random Value : \ ok
Compare XOR : ok
Compare SUB : ok
Compare MUL : ok
Compare DIV : ok
Compare OR : ok
Compare AND : ok
Sequential Increment: ok
Solid Bits : setting 1 of 64ok
Block Sequential : setting 1 of 256testing 224 of 256setting 225 of 256testing 225 of 256setting 226 of 256testing 226 of 256setting 227 of 256testing 227 of 256setting 228 of 256testing 228 of 256setting 229 of 256testing 229 of 256setting 230 of 256testing 230 of 256setting 231 of 256g 238 of 256setting 239 of 256testing 239 of 256setting 240 of 256testing 240 of 256setting 241 of 256testing 241 of 256setting 242 of 256testing 242 of 256setting 243 of 256testing 243 of 256setting 244 of 256testing 244 of 256setting 245 of 256testing 245 of 256setting 246 of 256testing 246 of 256setting 247 of 256testing 247 of 256setting 248 of 256testing 248 of 256setting 249 of 256testing 249 of 256setting 250 of 256ok
Checkerboard : setting 1 of 64ok
Bit Spread : ok
Bit Flip : setting 1 of 256ok
Walking Ones : setting 1 of 64ok
Walking Zeroes : setting 1 of 64All tests passed.
Thanks again,
Alex

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.

G4 dual 1Ghz MDD dead?

Similar Messages

Maybe you are looking for