How to check the power supply? iMac G3 233

How to do it?
Can i just take the case with the mainboard out and "short" the pins Power on (pin 8) with GND and check the voltages on the connector that comes out of the monitor case?
I know that the pin 8 is the power from articles about imac>atx case conversion.And i know that you can power up a normal ATX power supply by shortening two pins, and want to know if i can do the same with iMAc power supply. I don't want to fry anything.

Sounds like you have eliminated most of the possibilities, other than power supply board or motherboard. But it may also be the CPU daughter card that is faulty. I had one (233 MHz) that would run Mac OS 9 just fine, but it was unable to run Mac OS X reliably (crashes and freezes after a few minutes). I replaced it first with a 333 MHz G3 card off of eBay and later with a 467 MHz G4 card from the Fastmac booth at MacWorld San Francisco two years ago.
If you are comfortable disassembling the iMac to the point of removing the power supply board, you can layout the PS board and the carrier assembly (the thing you pull out with the motherboard, CPU card, and drives) on a table top. Then connect the power supply board to the carrier assembly, and connect the external power cord plug to the power supply board, and connect a keyboard with a power button to the carrier.
To measure the voltages, you can disconnect the 4-pin connector to the hard drive. If you turn it on using the power button on the keyboard, it will not start up with the hard drive not powered up (unless you use a bootable CD), but the system should be powered so that you can take your measurements.
Hope that works. Be careful with the exposed back end of the CRT. Keep any curious cats out of the room while you do this...
In case you don't have the PDF of the tray-loader iMac tech manual, it is downloadable here.
http://www.baconeggs.co.uk/manuals/index.htm

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System Configuration: Sun Microsystems sun4v Sun Fire T200
System clock frequency: 200 MHz
Memory size: 8184 Megabytes
================================ Virtual CPUs ================================
CPU ID Frequency Implementation Status
0 1000 MHz SUNW,UltraSPARC-T1 on-line
1 1000 MHz SUNW,UltraSPARC-T1 on-line
2 1000 MHz SUNW,UltraSPARC-T1 on-line
3 1000 MHz SUNW,UltraSPARC-T1 on-line
4 1000 MHz SUNW,UltraSPARC-T1 on-line
5 1000 MHz SUNW,UltraSPARC-T1 on-line
6 1000 MHz SUNW,UltraSPARC-T1 on-line
7 1000 MHz SUNW,UltraSPARC-T1 on-line
8 1000 MHz SUNW,UltraSPARC-T1 on-line
9 1000 MHz SUNW,UltraSPARC-T1 on-line
10 1000 MHz SUNW,UltraSPARC-T1 on-line
11 1000 MHz SUNW,UltraSPARC-T1 on-line
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13 1000 MHz SUNW,UltraSPARC-T1 on-line
14 1000 MHz SUNW,UltraSPARC-T1 on-line
15 1000 MHz SUNW,UltraSPARC-T1 on-line
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IO
Location Type Slot Path Name Model
IOBD/NET0 PCIE IOBD /pci@780/pci@0/pci@1/network@0 network-pciex8086,105e
IOBD/NET1 PCIE IOBD /pci@780/pci@0/pci@1/network@0,1 network-pciex8086,105e
IOBD/PCIE PCIE IOBD /pci@780/pci@0/pci@9/scsi@0 scsi-pciex1000,56 LSI,1064E
IOBD/NET2 PCIE IOBD /pci@7c0/pci@0/pci@2/network@0 network-pciex8086,105e
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IOBD/PCIE1 PCIE 1 /pci@7c0/pci@0/pci@8/network@0,2 network-pciex108e,abcd SUNW,pcie+
IOBD/PCIE1 PCIE 1 /pci@7c0/pci@0/pci@8/network@0,3 network-pciex108e,abcd SUNW,pcie+
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IOBD/GBE1 /pci@7c0/pci@0/pci@2/network@0 pciex8086,105e.108e.105e.6 6
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I am interested in getting the same o/p which also gives status on Fan Status/Power Supplies etc.
Please let me know do we need to upgrdae the OBP Version else ?
Thanks
Rajan

Hi
In thee same ref. I would like to know the comand from OS/Bash prompt so that I can write the script in which it will compare the values and alert me accordingly.
In case sc> prompt there is commnand "show environment" which give all details.
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Rajan

How to change the power supply to the CD/DVD Drive so that it is off by default?

When running on battery I often use the "Safely Remove Hardware" icon from XP to "unplug" the Mat****a CD/DVD drive in order to safe some battery life.(Does it?) I use Fn+Tab to bring it back to life. I wonder if there is a way to make my Notebook (M400) boot with the power supply to the Drive off by default. By the way, any idea where I can find the extra battery for the CD/DVD-Drive slot and at which price?
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Hello Robert
If you check start page you will see that this support forum is not any kind of Toshiba support directly but user-to-user forum. But you are not alone and many users expect that some Toshiba support team sit in the office and wait to write answers.
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Hello. I'm having a severe problem with my 2007 Mac Pro. The symptoms are very easy to describe. The computer apparently shut itself off overnight, and when I press the power button to turn it on, absolutely nothing happens. No lights, no chime, no signs of any power whatsoever in the computer. I have never had major problems with the computer before. (Although I had recently noticed some minor skipping problems with streaming videos and Firefox had started hanging occasionally.)
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The second manual of the following link may help:
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**Click the KUDOS thumb up on the left to say 'Thanks'**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

I had an Intel-iMac fried by lightening. UPS, surge protectors but it happened as I was reaching to unplug. Cold now. Could it just be the power supply? Can I replace that myself?

This is the full question since I couldn't get it all in the box.
I have some complex questions regarding an iMac, a Time-Machine backup, and iTunes on an iPod.
I live about halfway up an extinct volcano about 12 miles north of San Jose Costa Rica. Some months ago, we had a thunderstorm and as I reached to unplug my computers lightening struck about 50 meters from my house. I had an iMac with a 3-Tb external backup drive, a PC laptop and a laser printer on the same power strip. There was a definite surge and the light brighten and then power was lost for a few minutes.
When power was restored, the PC and the laser printer seemed to work fine but the iMac was cold.
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Those are my iMac questions, now the questions about backup restoration.
If there is a saving grace with this it is that the Time-Machine backup seems fine although I have only accessed the data through Finder. I replaced the iMac with a Macbook Air with significantly less mass storage and I can't just move files to the Macbook. My problem is that I have an iTunes library of some 10,000 songs on the backup and until recently on a 160 Gb iPod which was old and it crashed. I have replaced the iPod but have not tried to restore the iTunes library to it because of my confusion about how to do that. Can anyone tell me how I might do that or give me any insight into the process?
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Is is possible that the power supply was fried and not other essential parts? Would it be worthwhile to replace the power supply? Can I, with limited experience and tools do it or need I take it to a technician? My concern is that if the hard-drive is good, there is personal information on it that I don't want to risk
Quite possible, but working on iMacs is not easy, & PSU might be prohibitive.
Hopefully the Drive might have info on it, but even pulling that out can be a chore.
If you don't know the model, find the Serial# & use it on one of these sites, but don't post the Serial# here...
http://www.chipmunk.nl/klantenservice/applemodel.html
http://www.appleserialnumberinfo.com/Desktop/index.php
How to find the serial number of your Apple hardware product...
http://support.apple.com/kb/HT1349
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I'd get an external drive & restore the whole works to it, then boot from the External drive.

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What version is your TC.. A1xxx from the rubber foot?
Power supplies are not available from apple. They do not consider it repairable. It is a sealed consumable.
Power supplies are available from ebay.. simply type time capsule power supply into search.
This is absolutely standard issue that has been ongoing for ages and ages.
See https://sites.google.com/site/lapastenague/a-deconstruction-of-routers-and-modem s/apple-time-capsule-repair
For a multitude of ways to fix it.
The 1 TB drive is LOOSE in there.
No, it is not loose, it has rubber mounts with pins in the bottom base plate. You cannot see the mount points with the base off. This is standard hdd mount for low noise and vibration.
I had thought that the issue was the drive itself was bad.
Drives seldom are the problem. The Gen2 WD black has been less than great though.. and later spinpoint in Gen3 not so good.
Apple Igneous bar

How do I know if the Power Supply is shot?

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WrightBrayne wrote:
I recently bought a new iMac and wanted to give the old G5 to a family member. The G5 just went dead, I think it took it personally....
Many moons ago, my previously trouble-free Mac IISI died less than a week after my Power Mac 7600 arrived. Spooky, ain't it?
Hope you were able to resuscitate your G5.

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<Email Edited by Host>

What does the EMC# say on the base?

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My 27" Imac (A1312/EMC2390) keeps shutting down unexpectedly with no warning or "screen of death". So far I reset the SMC, and zapped the PRAM. I even replaced the power supply but the problem continues. My error and system logs seem unhelpful too. Can anyone help me out?

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How to check the power supply? iMac G3 233

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