PowerMac G5 Dual 2.5GHz Remote Power Button ??

Hi,
I'm moving a G5 to a place where it would be hard to get to the power button. Is there any way to add a remote power button?? Any help would be great thanks.

Hi Ampex351-
Did you by any chance search the forum regarding this subject? I know that this has come up more than once and the most eloquent solution seems to require a small amount of surgery on your Mac in order to install the contacts of a small 12V relay in place of the power button and have that switched from a remote location via the application of 12V.
Luck-
-DP

Similar Messages

Powermac G5 dual 2.5GHz won't boot

Hi,
I've recently started having issues with my dual 2.5GHz G5 Powermac. When I switch it on I can hear the drives start up and data being read from them. But there's never any chime and the screen stays black. The drives stay quiet (spinning but no data being read). After a minute or two the fans ramp up to full speed.
If I leave it off for a while (eg. overnight) it resolves itself somehow and boots up without any issues. Once it's booted up there are no issues at all and it will run fine for weeks and days, until it needs to be rebooted again. I just put it to sleep when I'm not using it and it wakes up fine.
I've tried the following without any success:
- unplugging all peripherals (usb + firewire etc)
- reseating the ram
- swapping out the ram
- trying to boot into open firmware (it won't get that far)
- resetting the pmu with the button on the motherboard
- installed the latest updates to os x
- reseated the graphics card
- replaced the battery on the motherboard with a brand new one
This started roundabout the time I upgraded to 10.5.5 though that could be a coincidence. I also cleaned dust from the inside of the machine at that time as well (including off the graphics card fan and heatsink which was getting clogged up). So, that may have caused it. But again it could just be a coincidence.
Does anyone have any suggestions? All fans and both fans spin up, so I don't think it's the PSU, but I could be wrong. My only thought at the moment is a possible problem with one of the drives. So, I could try installing to a firewire drive and booting from that, but given that I can't even get into openfirmare, I'm not confident in that working. Similarly I don't have much hope of it booting from CD.
Any suggestions or help would be very much appreciated
Phil

Hi Phil Brayshaw-
What does the little white power light do? This should be helpful: About the Power Mac G5 (Late 2005) diagnostic LEDs
Although it sounds to me like you have tried most of the troubleshooting steps, this document is a good overall reference to address this particular problem: Power Mac G5: What to do if you see black, white, or no video at start up
Have you tried another monitor and/or double-checked your cable and its connections? If everything else is working as expected that would certainly be a major suspect.
Luck-
-DP

PM G5 Dual 2.0 Internal Power Button ?

Hello
Does anyone know if the PM G5 Dual 2.0 has an internal Power Button ?
If so, where is it exactly ?
Thanks
Tim

Hi Tim, not a Power Button per se, but a PMU/SMU button...
How to reset the SMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005) ...
http://support.apple.com/kb/HT1436
Earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939

Powermac G4 : Wake up only with Power Button

My Mac used to wake up with just moving my Logitech USB Mouse until the fans went haywire. Now only by pressing the Power button, does the Powermac G4 wake up. Fans have been changed, Hardware test and Memory test have been run, still no change. Any suggestions how to restore the wake-up to previous state. Thanks.

whether using NVRAM or PRAM, the Powermac G4 reverts to Panther on restart. I am told this is normal.
That sounds like a dead or weak PRAM battery. "Normal" is that the computer remembers its startup volume settings. Are you unplugging the computer from wall power? What you see can be a symptom of having a dead PRAM battery combined with pulling the plug out of the wall every night. Turning off a power strip of backup power supply has the same effect.
There are a number of G4 variants and I've not yet seen a mention of which G4 variant you're working on. The later Mirrored Drive Door G4s do better with both drives set to cable select. The older variants retain the older "master/slave" relation for drives. Do "About the Mac..." then click on "More Info..." in the resulting window. Copy/paste the "Hardware Overview" info from the next screen into a post here, deleting your serial number. That screen for my G4, an MDD, looks like this:
Hardware Overview:
Machine Name: Power Mac G4
Machine Model: PowerMac3,6
CPU Type: PowerPC G4 (3.3)
Number Of CPUs: 1
CPU Speed: 1.25 GHz
L2 Cache (per CPU): 256 KB
L3 Cache (per CPU): 1 MB
Memory: 1.75 GB
Bus Speed: 167 MHz
Boot ROM Version: 4.4.8f2
Serial Number: <deleted>
That might help us work througha n model-specific issues.
What kind of keyboard do you have the requires USB 2.0? Most are slow devices and more than hapy on a USB 1.1 port.

PowerMac G5 DUAl 2.5Ghz and older ATA drives, HOW ?

Hi everybody.
I have question maybe someone could help me with.
I now have a G5 Dual 2.5 and also 3 ATA133 drives from my old G4. I need to install the 3 ATA133 drives into my G5, but from what i have read someware, the G5 uses another system, right ? its not ATA133 anymore.
So how is the easyest way to get my 3 ATA133 drives to work indside the G5 ?
Do i need a ATA133 controller card (PCI) or something else, does the G5 have PCI at all ?
If somebody could help me out here, i would be very happy indeed.
Thx a lot.
Mugge

This depends on which model of dual 2.5 you have. The dual processor 2.5 has PCI slots. The dual core dual processor 2.5 (quad) has PCI-Express slots. Both G5 models use SATA (Serial ATA) hard drives so you do need a controller card to attach your ATA drives.
Apple doesn't support mounting more than two hard drives internally in the G5s so it might be easier to just get firewire cases for your hard drives and make them all external.

Networking a G5 dual 2.5ghz and a Powerbook G4/550 (Gigabit Ethernet)

I have two macs. A PowerMac G5 dual 2.5ghz with 2 gigs ram. My other one is a Powerbook G4/550 (Gigabit Ethernet)(with PCMCIA Slot). I have the G5 at my desk and the Powerbook upstairs (about 100 feet by walking 40 feet as the crow flies. I have a 115 year old house with unGodly thick mortar walls that make any networking a challenge so I do not want to guess. I want the best networking solution afordability wise and efficiency wise. Mobility is not that big of a deal and speed of data transfer is paramount. I also do not want slow download or transfer speeds on either machine. I don't transfer mush from BIG MAC to small mac but the internet thing (SPEED) is important. I do movie and music editing on both and maintain a web site daily with tons of each on it. Should I wire the thing to avoid slow wireless speeds and what all do I need. I know my laptop (Original Airport) speed is 11mbs. but I can't seem to find any comparison to ethernet wired speeds. I have DSL and no airport card and don't mind wiring if the speed is lots better. Can someone straighten me out or point me to the andwers? Please? indigorob

If speed is important then you want to run ethernet cable between the computers. The Mac's ethernet (10/100/1000) connector is capable of 10 megabits/second, 100 megabits/second, and 1000 megabits/second (Gigabit Ethernet). The original airport is about 11 megabits/second. The Airport Extreme/Express is 54 megabits/second.
You can easily get at least 100 megabits/second by running wired Ethernet.

Dual G4 won't turn on. Power button just blinks

Hi everyone, first off I'd like to say that I know there are a number of similar posts to this but I read many of them and I think mine is a little different.
Earlier today my Dual 1.42 G4 powermac was on and was in the screen saver. I pressed the sleep button on my Apple 23" display and nothing happened. I waited about ten seconds and, needing to leave, pressed it again and left. Well, I returned now and found the computer was off. I pressed the power button on the display and nothing happened. It just blinked. I then pressed the power button the computer and it did the same, just blinked for a second.
I just followed Texas Mac Man's directions from other post by unplugging the power cable and removing the battery. Waited ten mins and tried power it up and nothing happened. Same issue. There are no start up chimes/beeps and the fans do not spin up.
I also found a link that showed how some powermac's power button go bad and that a usb keyboard with a power button can start it up. My display has a power button and it couldn't turn the computer on so this isn't my issue, right?
Some info about the comp: Dual 1.42, OS 10.5, everything stock except a ram stick I added three years ago. Thanks for your help in advance and can't wait to get this old champ running again.

I debated starting yet another "my G4 won't start" thread since my problem is more similar to Tammy in MO's.
My Dual 1 Ghz G4 (Mirrored Door) won't start up when I press the power button. The power button usually does not light up upon touch. The computer does not shut down on me when I am working on it.
The only way to get it to start up again is to unplug the power cord from the back of the computer for a minute or two (not long at all) and then plug it back in again. If I do this, I can run the computer all day without any problems. Once it goes to sleep or shuts down, then I have to unplug it again and start over.
I have done the following:
Replaced the battery.
Reset the PRAM:
http://support.apple.com/kb/HT1379
Reset the PMU:
http://support.apple.com/kb/HT1939?viewlocale=en_US
as well as done the PSU test:
http://discussions.apple.com/thread.jspa?messageID=9301520&#9301520
This last test yielded no voltage results, best I can tell.
Truth be told, I don't think I did the PSU test properly since the ends of my voltage tester are probably a bit too large to properly test the pins.
http://img244.imageshack.us/img244/4280/fw800pinout.png
I even tried to discharge the power from the logic board:
http://discussions.apple.com/message.jspa?messageID=582223#582223
BTW: The red led on the logic board does come on and stay on when the unit is powered up and running.
I was wondering if this has happened to anyone else, and if anyone knew how to solve the problem.
At this point since this machine is relegated to my wife and kids so for me it's more annoying than anything else. Any other suggestions or advice would be appreciated.
Thanks in advance.
Chris

No Chime, display or illuminated power button QS Dual 1 Ghz

Hi. I have a PM G4 Dual 1 Ghz. It was a great computer until about 2 years ago when it sadly stopped working. I found a broken capacitor on the motherboard (No. 820-1342-B) , so figured it was a bad MB. I replaced the board with a (No. 820-1276-A) board and had no luck. The symptoms-the same as on the new board. I purchased a tested and working board (No. 820-1342-B) and still had no luck. I am beginning to suspect a problem with my processor card or my power supply but I don't want to put any more money into it. I have tried to reset PRAM but the keyboard isn't recieving power. The symptoms: Power light when pressed in, red light on logic board, fans, hd, and optical drive work. No keyboard, display, or chime. Please help- I want to donate this computer and can't bear throwing it away

You never said if you replaced the PRAM battery.
I would check it first. When mine went, I had no response from my Mac at all; just a light on my power button; absolutely no boot at all.
For G4's and earlier models, check out things in Texas Mac Man's Battery, PRAM, PMU tutorial on the subject.
There are other tips in there too.
Dale

I'm trying to set up a dual monitor for my new iMac. I'm using a second display I used with my old G5. My iMac recognizes the second monitor but the monitor won't turn on. Power button doesn't do anything on the monitor itself.

I'm trying to set up a dual monitor for my new iMac. I'm using a second display I used with my old G5. My iMac recognizes the second monitor but the monitor won't turn on. Power button doesn't do anything on the monitor itself.

If it won't turn on then the monitor is dead (power supply?, video circuits?). Not worth repairing.
If you have a new iMac then it has thunderbolt. So exactly what is that monitor you are trying to connect? For TB you can connect a mini-displayport monitor. Probably (not 100% sure with TB) can use dvi or vga too if you have the appropriate adapter.

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.

PowerMac G4 MDD power button flashes but doesn't boot

My PowerMac G4 MDD will not boot when the power button is pressed. The power button lights up for about 1/2 second and then goes out. There are no noises at all. No hard drive spin-up, and no fan.
For the past few years, in order to get the machine to boot up, it has been necessary to unplug it from the power source and plug it in again. I have read about other people having this same exact problem and remedy. Now, however, doing the unplug/replug thing no longer gets the machine to boot. The power button will light up briefly only after an unplug/replug. Subsequent pushes will not cause it to light up until another unplug/replug is done.
I have removed all peripherals, including the video card (only card that was in the machine), 3 of the 4 RAM modules, disconnected the hard drive and DVD drive power cables, and disconnected the fan, and removed the PRAM battery (which I know is probably dead), and this makes no difference in the behavior: The power button lights up for about 1/2 second and nothing more. I also disconnected and reconnected the power supply cable to the motherboard. No difference.
There seem to be 2 possibilities: I need to get a new PRAM battery and press the PMU reset button, or my power supply has gone bad.
Before I buy a PRAM battery, I am investigating the power supply to see if I can tell whether it is good or not. Some people with similar problems have discovered blown fuses in their power supplies. Before I open up my power supply and look for that fuse, I have a question for anyone who had that fuse problem: Did your power button still light up, even briefly, when your power supply had the blown fuse?
Best regards,
Dave

Hi steff1920, and a warm welcome to the forums!
While you may get help or a solution here, It's quite acceptable to start a new topic of your own, certainly feel free to start a new topic to attract more helpers to your particular situation, here's a link if as is often the case, it's hard to find out where to do it...
http://discussions.apple.com/post!default.jspa?forumID=589
Hopefully we can get things explained.

Power button flashes on 22" Cinema Display with PowerMac G5

I just bought a G5 and and ADC to DVI adaptor. I'm connecting to a 22" Cinema Display. Everything works fine on the display, except the power button flashes. I'm wondering if anyone else has run into this issue.

The power button flashing indicates some type of hardware problem with the display. You should call AppleCare or check the documentation to determine the exact problem by the number of blinks and pauses. Even though it is working now, there might be a problem that will soon manifest itself.

Powermac G5 dual 2.5 won't switch on

my powermac G5 dual 2.5 osx 10.4.11
it was working fine ,I left it switched on while i went for food came back to it a few hours later and it had switched off and it will not power up. i have tried new mains lead and alternative power socket
but alas no power getting to it at all ...help any ideas
thanks
Message was edited by: John Williams17
Message was edited by: John Williams17

Remove the metal side panel. When you press the power button, do you see anything happen? Does the power light flash at all? Do you see a red light on the logic board?
Matt

Powermac G5 Dual 2.5 wont start up? Went through all I can think of. Help!

I have a Power Mac G5 Dual 2.5ghz with 8gb of Ram and two 1tb Hitachi Harddrives.
My PCI Cards exist of a 256mb Graphics Card, a 128mb graphics card, and a Esata 4 Port card.
My computer was perfectly fine when I left for work in the morning.
I got back and my monitor light was on but my computer wasn't.
Which is odd because I have it automatically reboot when it shuts down from a power failure.
Tried the button and it didn't work.
No light comes on over the button on the tower.
So I thought the powerstripe faulted.
Went back to reset it.
Nothing.
Then switch the outlets.
Nothing.
Switched the power cable.
Nothing.
Opened it up and reset the SMU/PMU.
Nothing.
Took all the ram out and switched them around in the one spot.
Nothing. (if it was the ram atleast one pair of the 8gb should be fine and nothing)
Someone mentioned replacing the PRAM Battery? (going to try that tommorrow)
Any Idea if thats viable?
Or do you have any other recommendations?
It isn't under warrenty anymore.
So anything that might work that will save me from technical support from apple witll be helpful.
THANKS.

No - No Click.
It is like unresponsive.
As f there was no juice going to it at all.
But I know there is.
A friend told me its probably one of two things.
Both are bad.
One is the power supply is shot. (sadly as expensive this would be I am hoping it is this)
Two is the motherboard is fried. (which is probably the worst thing that I could think this could be)
No matter what is I have no warranty so that means any work will cost money as well as parts.
If it costs more then $500 I am going to take my two 1TB drives and sell the ram and the rest for parts.

G5 Dual 2.5GHz freezes with a very high pitch sound

Hi
My G5 Dual 2.5GHz freezes with a very high pitch sound from inside the comp. It happens occasionally after a few days of everything running smoothly. Someone can help ?
PowerMac G5 Dual 2.5 GHz Mac OS X (10.4.9)

Hi Phil Brayshaw-
What does the little white power light do? This should be helpful: About the Power Mac G5 (Late 2005) diagnostic LEDs
Although it sounds to me like you have tried most of the troubleshooting steps, this document is a good overall reference to address this particular problem: Power Mac G5: What to do if you see black, white, or no video at start up
Have you tried another monitor and/or double-checked your cable and its connections? If everything else is working as expected that would certainly be a major suspect.
Luck-
-DP

PowerMac G5 Dual 2.5GHz Remote Power Button ??

Similar Messages

Maybe you are looking for