They extrusion screws marked in red in the picture have a very curious operation. To ensure the processors in place while allowing their installation, these screws are loose but when inserted into the motherboard and processor allow you to move out of the connector that goes into the motherboard and tighten what we do is change the radio making it larger and thus blocking the processor in place.
Cuando laying again the embedded processors but remember to leave them loose in your instead, after putting the squeeze processors. In the picture you can see the green connector on the processor that has been withdrawn. In the image processor with cooling plate removed from the motherboard. We must not only remove the screws holding the processors but also engage in the computer case to remove then the PSU.
We will use a small spanner or wrench, taking care not to damage the motherboard. To remove the metal plate that separates the compartment PSU from processors must loosen a couple of Phillips screws that attach it to the PSU and then swing it into the MB as shown in these photos, then to remove. On the bottom of the computer also has to be released four screws to release the power supply. This must be the computer after removing all the above components.
It is important to group and classify all the screws removed and then know that some were. This is the first dilemma that we have to face. This is the PSU of your computer, there are several possibilities, the first buy a used one, the truth is that these sources give problems and will break down, another solution is to see if there is a burned component and replace it with a new one, this usually does not work, the components can be relatively expensive addition 7 euros a IC so you can spend a few euros for nothing, continue the dismantling process to take a look.
Loosen the screws and take off a clear plastic shield to access the PSU board.
Mac g5 power supply clicks
It is striking, impressive printed circuit board which will help me to make a Quadcopter bovine filled radiators and a multitude of transistors capacitors, it is understood that Apple had a high price for this PSU, on the other hand has been so bad result. In my case I saw a burnt IC and proceeded to replace it with a new 7 euros but to no avail, the PSU had still not started.
Although not see it there are always more damaged components should be replaced so that the PSU works. I just left the next option, replace the PSU by a PC, are very cheap 20 euros and if you can put another one if breaks for very little money, the procedure is amazingly simple, because the colors of the wires thanks to the normalization are the same so it's hard to go wrong, this is the process step by step.
The first is to choose the right PSU, you must have at least W of power to feed the G5 correctly, the latter must be of type ATX, this ensures that we can turn on when you press the button and you have all the necessary voltages less one that is not essential as we know to work with our computer. It's low-end so its price ranges from 20 to 25 euros on any computer trading is available. We proceed to remove the case and see how small the PSU board in relation to the G5, and we doubt entered as possible that this PSU can do the same thing the other being three times smaller, as if does, as we shall see later.
Desoldering power cables v that are colored black and going to the socket of the PC PSU also release the fan connector on your site and release the screws to release the metal plate of the case where it was, should be as shown in the picture. It really is surprising the difference in size between the two MB, a thing of the technology has advanced so much in this time or simply try to reduce costs. The power supply is attached by screws that come through the bottom of the chassis.
Upon closer inspection, these screws have a thoughtful surface finishing that is not present on any other screws in the G5. To be clear, these are screws underneath the computer that are not visible unless you flip the entire computer upside down — but because they are technically visible from the exterior, Apple opted to give them a bit of extra finishing.
As previously mentioned, the power supply is hidden under an anodized aluminum plate, except for one unavoidable part: the IEC C14 power plug in the rear. No detail left behind. At this stage, the only parts left in the chassis were the motherboard and the drive brackets. To this day this chassis remains one of the nicest desktop cases ever built:. The entire time I was dissembling the G5, I kept wondering what poor contract manufacturer had to deal with all this unconventional custom work. With the G5 disassembled, it was time for the hard part of the project: modifying the chassis to accept modern computer parts.
We chose parts that would give us significant computing and graphical horsepower while fitting in the G5 chassis with minimum destructive modification the actual part list I used is here. Luckily, I found The Laser Hive , a British company that provides plans for aluminum G5 adapters for modern computer parts free of charge.
PowerMac G5 Power Supply
For those without access to a water jet or strong laser they also sell complete adapters. The first custom part we had to make was a bracket for mm cooling intake fans. We chose mm fans because they pretty efficient and quiet. Taking a note from the original G5 design, we used silicon screws to hold the fans to the intake bracket.
The next custom part we had to make was a rear adapter plate that would allow us to install a mm exhaust fan, and expose the ports on the new motherboard. The new motherboard would be held in place by a laser cut transparent acrylic tray. We also discovered that — surprise — the front panel including the power button on the G5 is proprietary and matched to the original non-standard motherboard.
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In order to use the panel to control the new motherboard, we had to wire a custom cable harness. A big thanks to the hackers at InsanelyMac who provided wiring diagrams. With all the custom adapters installed, we could finally begin assembling the new computer inside the G5.
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This was the easiest part of the entire project. With the components assembled in the chassis, we had to make one last custom part: the power supply. The new components required a modern power supply, but we wanted to keep the light grey power plug from the original power supply. This was accomplished by splicing the power and ground wires in the bottom half of the original power supply enclosure to a power cable leading to the new power supply.
This also allowed us to install the power supply in using the nicely finished screws discovered during disassembly. With the power supply installed, the hardware portion of the retrofit was complete! Please provide your full name first and last name when ordering capacitors. Read the Shipping for shipping and delivery information.
If you are interested in more than 10 MOB cap kits, please send me an email with a total amount of how many iMac G5 cap kits you are looking for, along with a note of which of the two different cap kit sets you are interested in. Click the eCommerce link. Capacitor information is provided there. Verify what capacitors your Apple iMac needs, and bring your iMac G5 back to life today. Send me an email with your questions, or special order requests.
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I now have all the power supply cap kits available. Feel free to contact me any time, with any questions.
Take a look at the PSU cap kits that are available for purchase. Just a brief update for those that have been out of the capacitor loop. About the time Apple was building their G5 line of personal computers, several Taiwanese electrolyte manufacturers began using a stolen electrolyte formula that was incomplete, and lacked key ingredients needed to produce a stable capacitor.
The missing ingredients caused the electrolyte in the capacitors to break down, evaporate, leak out of the cap casings, caused overheating of the capacitors themselves under normal load conditions, and subsequently caused exploding poppers.
661-2903 Apple Power Supply 450W for Power Mac G5 API2PC54
Consequently the capacitors started bulging, overheating, and exploding in many of the power supplies and mother boards manufactured by Apple, Dell, Hewlett-Packard, and others which has been documented by numerous articles online. See Apple information on the power supply and the video and power issues documents. You can read the actual repair extension program text in the Apple iMac Mother Board article, exactly as it was in the original Apple documents. The program was available for certain iMac G5 PowerPC models that were sold between approximately September and June featuring inch and inch displays with 1.
Apple provides a diagnostic guide for determining whether the problem is with the motherboard or the power supply. Included in that Apple document are instructions of how to turn on an iMac with the back cover off. There are two small buttons located under the fan cover as displayed in the document. One button is the internal power button, and the other button is for resetting the System Management Unit SMU which is located right next to the internal power button.
Since, I feel that I have been somewhat of an online trailblazer on documenting the iMac issues and the Apple iMac G5 motherboard repairs project , I thought I would take the time to dive into another area that many of our readers have stated is also a big problem with the Apple G5 line of computers. That big issue has to do with the main power supply installed in the iMacs are dying and dropping like flies.
From what I understand though not confirmed about the iMac PSUs, is there are at least several different power supplies used by Apple in their iMac G5 model lines. The part numbers are located on the back of the PSU case. The serial number has a barcode graph.
See the Apple Power Supply, inch Replacement Instructions for how to remove and install your power supply unit. If you have an Apple model with the ambient light sensor, pay particular attention to not breaking the wiring or the sensor that is mounted to the lower portion of the power supply when removing the PSU. Ok, that gets your power supply unit out. Now what? There are several service repair or replacement options available for your iMac G5 power supply.
Before I talk about option number three, I would like to point out that when you buy a used or new power supply from Apple or another vendor, you have no idea whether the capacitors that are used in this new or used PS are any better than the ones that were installed in your particular iMac. In all likelihood, the new or rebuilt PSU might not last either. With that being said, it seems obvious that you are taking a chance no matter what you do.
By-the-way, the cost of a power supply for an iMac will likely set you back to buckaroos. Capacitors actually get old just sitting on the shelf. With many of my readers sharing their iMac G5 stories, both in the online comments section and sending emails to me documenting their problems they are having with their Apple iMacs, I thought it was prudent to take the next step and see if I could discover first hand what was going on in the field with these 17 inch iMacs.
I already own an Apple iMac 20 inch model but I needed a 17 inch one for further investigative work. So, I went searching for a broken iMac G5 computer that I could get my hands on for a fair price. Many people kept telling me that they had an iMac G5 17 inch model computer with no physical signs of bad capacitors on the motherboard. I wanted to verify this for myself. He took it to the local Apple Genius Bar folks and they said he needed a new motherboard.
So, after talking with the seller and asking him some questions about this particular iMac, we settled on a fair price, I met him in San Ramon, CA, and purchased it from him. In my opinion he was a straight shooter, and was nice enough to allow me to open the back cover up before I purchased it in order to make sure all the hardware was inside, i.
However, he had given away the keyboard, mouse, and the software to some friends. So, I get my new, broken, what an oxymoron, iMac G5 back to the office and I plug it in, push the power button, and it just sits there staring at me with a blank screen. Nothing powers up.