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iMac G5 iSight Intel Core 2 Duo Disassembly




How do you disassemble the Apple iMac G5 iSight Intel Duo Core Mac? I first removed the memory modules by unscrewing the bottom access panel. The Plexiglas on the front is held on by a magnetic strip around the lip. I used a piece of clear tape to grab it and gently pulled it away. [...]






Click to read more about: iMac G5 iSight Intel Core 2 Duo Disassembly

How do you disassemble the Apple iMac G5 iSight Intel Duo Core Mac?

I first removed the memory modules by unscrewing the bottom access panel.

The Plexiglas on the front is held on by a magnetic strip around the lip.

I used a piece of clear tape to grab it and gently pulled it away. A small suction cup works also.

From there you can get to the screws that hold the outside bezel in place.

From there, you can lift off the front bezel (disconnecting the camera cable at the top) and gain access to the display bracket screws on each side.

Once you take those out, then the display will lift out of the chassis. Just keep track of the four sets of cables that plug in the back side of the display and there is one main MOB display connector cable with a clip.

Here is a video that shows a few of those items:

Note there were more connectors on the bottom of the display on the Aluminum iMac G5 that I had an opportunity to work on. I noted which connecters went where before disconnecting them.

Below are pictures of the Apple iMac G5 iSight Intel Core 2 Duo model.

Pictured above is the inside of the iMac G5 Intel Core 2 Duo. Note the power supply in the upper left corner, followed by the hard drive in the upper middle, and the DVD/CD Super Drive on the right side. Located directly below the hard drive is the mother board (main logic card) with the main heatsink screwed directly to the mother board (MOB). To the right and left of the MOB are the fans. To the the right and left side of the fans are the built-in small speakers.

Pictured above are the onboard status lights (LEDs) located on the main logic card. These LEDs can also been seen in the first picture of the Apple iMac G5 Intel with the bezel removed. However, I don’t believe these status lights match up to the older iMac G5 PPC onboard status lights. Citation required.

Here is some additional information on some of the Apple iSight G5 models.

Below is a video of an earlier generation iMac G5 iSight model. I believe this video is of an interim iMac G5 model.

 

 

Note the memory is located in the bottom of the iMac. Access is by removing a small screw in the access panel. I also suggest you remove the memory first.

Article by: Jim Warholic

Jim is President of Professional Web Services, Inc., an Internet marketing services company specializing in both the B2B and B2C market place. If you would like to find out more information about getting your business more sales and qualified leads online, contact Professional Web Services today.

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Apple iMac G5 Take Apart Procedure 1st and 2nd Generation




Here is the procedure that I used to replace the capacitors on the Apple iMac G5 MOB. Here is the link location of the






Click to read more about: Apple iMac G5 Take Apart Procedure 1st and 2nd Generation

Here is the procedure that I used to replace the capacitors on the Apple iMac G5 MOB.

Here is the link location of the Apple service manuals, with step-by-step instructions in PDF document form for removal and replacing everything on iMac G5 computers and other Apple products including: Cinema Displays, MacMinis, Laptops, eMacs, iPods, iMacs, and Towers. (link opens in new window)

When you take it apart, start with this order:

  1. Lay the iMac face down on a soft, protected surface.
  2. Back cover removal. (Loosen the three screws on the bottom lower edge, then lift up carefully from the bottom up).
  3. Take close up pictures of your G5 mother board and inside the iMac for your reference in case you need to refer to something for proper installation.
  4. Power supply removal ( http://manuals.info.apple.com/en/imacg5_17inch_Power_Supply.pdf ).
  5. Verify Power Supply capacitors are not bulging or blown out.
  6. Hard drive removal.
  7. CD removal.
  8. Memory cards removal.
  9. Right fan cover removal.
  10. Lower left two small plug connectors undo by carefully taking needle-nose pliers and tug the plugs upwards to disconnect them.
  11. Fan plugs – disconnect.
  12. Airport option removal, being careful not to break the very delicate antenna wire clip. You might want to leave the wire attached and just move the Airport out of the way.
  13. Then remove the Torx mounting screws. See the special 12-in-1 screwdriver with Torx and Phillips bits.
  14. Carefully lift out the MOB, making sure all the mounting screws were removed. Do not force it.
  15. Heat up the soldering iron, with a wide tip attached, and working from the bottom and the top of the MOB, with the MOB tilted up on edge, heat up one leg of a capacitor on the backside and rock the capacitor slightly from the top. Then do the other leg, and the cap will come out of the hole.
  16. Remove all capacitors in the groups.
  17. Once the holes are clear, (pins work well), then place the high quality low ESR capacitors in the holes, making sure the positive and negative legs of the capacitors are properly situated in the holes. Do not install caps backwards. Major damage will most likely result.
  18. Apply Arctic Silver thermal paste heat sink compound to the small area (make sure it is cleaned with isopropyl alcohol), on the bottom of CPU. Cover it and the matching heat sink area with a thin layer (not to excess). Use a small razor blade as a scraper to remove the excess. Keep it thin, thin, and thin.
  19. Reassemble the motherboard, (don’t forget the white light tube that displays the “power on” light on the front cover of the iMac), hard drive, DVD/CD Super drive, cables, plugs, fan covers, memory modules, and make sure you don’t have any extra screws left over.
  20. Double check and triple check your work.
  21. Place the back cover on.
  22. Plug everything back in and turn it on.

Important Notes:

  • Don’t forget to put new heatsink compound back on the bottom of the processor chip, which is located on the bottom of the MOB, and the solid plate heatsink assembly located on the chassis: Arctic Silver. Several heating up and cooling down cycles is required for maximum thermal heatsinking effectiveness.
  • At least a 60 watt soldering iron is recommended and a good solder sucker and some plastic headed sewing pins for heating up and push removing solder from holes. Read the article: Soldering Tips for Lead-Free Solder for more detailed information.
  • Use rosin core solder only. Do not use acid core or acid flux. Use lead free, or, in my opinion even standard 60/40 leaded solder will work (although there are few lead-free caveats) for soldering the new caps. Just make sure there are no cold solder joints.
  • How to Tip: Use a few small pins to clear the holes when the soldering iron is used to heat up the holes to remove the old solder.
  • Don’t try to bypass this advice. Highly recommend replacing all the caps in both groups. Even though one or two caps might be visibly bad, the others are more than likely weak or on their way out too.
  • It’s up to you if you want to attempt the repair. It depends on how comfortable you feel about doing it yourself. The degree of difficulty on MOB caps replacement on a scale of 1 to 10, with 1 being the easiest and 10 being the hardest; a 7.
  • Double check your power supply unit. Open the PSU to check those capacitors too.
  • Degree of difficulty on PSU caps replacement on a scale of 1 to 10; a 3.


The procedure above is going off of memory.

Suggestions:

  • Layout your screws as you go.
  • Have lots of room to lay it out.


Refer to my articles, read carefully, and suggest printing them out for reference.

iMac G5 Motherboard repairs procedure
iMac G5 power supply repairs

Feel free to contact me if you have any further questions.

Jim

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Apple iMac G5 Power Supplies Capacitors




Apple iMac G5 Power Supply Match your power supply model to one of the pictures below. Open it up to visually compare. Please note that I have the model numbers listed as A, B, C, DD, and EE not by the Apple p/n. There are actually lots of different Apple power supply part numbers with [...]






Click to read more about: Apple iMac G5 Power Supplies Capacitors

Apple iMac G5 Power Supply

Match your power supply model to one of the pictures below. Open it up to visually compare. Please note that I have the model numbers listed as A, B, C, DD, and EE not by the Apple p/n.

There are actually lots of different Apple power supply part numbers with the same voltage pinout arrangement for iMac G5 computers including but not limited to: (661-3350, 661-3289, 614-0353, 614-0296, 614-0297, 661-3351 614-0923 614-0352 614-0294, AP14P46, 614-0398, 614-0326, 661-3625, 661-3289, AP13PC97, 614-0279, DPS-180SB, A 614-0334, 614-0366, 614-0326, 614-0398, 614-0353, 614-0328, 661-3627, 614-0327, 614-0325, 614-0365, 614-0329, 661-3290, Manufacturer Part Numbers: DPS-180QB-1A Rev 01, API4PC47, DPS-180QB ) along with a number of different manufacturers including: (ACBel API3PC96 – Celetronix Q45B – NPFC), and additional manufacturers’ part numbers than what is listed here. Also, see iSight power supply below.

Apple Capacitors For Sale - Click Here

Trust me on this, the best way to figure out what you need is to match the pictures below with your actual power supply “inside views” when ordering a PSU capacitor kit.

Apple iMac G5 PSU Example

Pictured above is an example of an iMac G5 power supply; yours might be different, and may not have the ambient light sensor shown above, which is attached to the bottom of some of the PSUs.

Below are pictures of the various iMac G5 power supplies, with the internal printed circuit board exposed, and after the metal covers have been removed. Read more about the do-it-yourself Apple iMac G5 power supply repairs and the Apple iMac G5 mother board repairs. Here is a link for measuring the PSU voltages if you have a voltmeter available.

Everything is in stock for the iMac G5 power supplies “A”, “B”, “C”, “DD”, and “EE” style PSUs. Purchase the iMac G5 power supplies cap kits from the “buy now” links. These Apple iMac Power Supply P/Ns are specified with my specific (easy to visually identify) G5 PSU “P/N” lettering system, not the official Apple Part Numbers.

The iMac G5 power supplies are listed below with a detailed picture of each PSU and the replacement cap values. Because of the large number of different iMac G5 Power Supplies, it is important to compare your iMac power supply visually, with the images below. There are differences on the capacitor values and quantities required for each of the PSUs listed below.

This article has been updated on 4/12/2011.

Power Supply “A”

Imac20PSU

Apple iMac G5 Power Supply 20 Inch “A” Style

11 Capacitors Listed

Capacitor uf Quantity Required Approx. Original Size Measured & Voltage Capacitors Replacement Upgrade
3300uf 1 10mm X 30mm 10 V 12.5mm X 20mm 10 V
2200uf 1 10mm X 24mm 10 V 10mm X 25mm 10 V
1000uf 4 8mm X 16mm 10 V 8mm X 20mm 16 V
1200uf 1 10mm X 24mm 16 V 10mm X 20mm 16 V
1000uf 1 10mm X 23mm 25 V 10mm X 23mm 25 V
330uf 1 10mm X 20mm 35 V 10mm X 12.5mm 35 V
120uf 1 8mm X 15mm 50 V 8mm X 15mm 50 V
22uf 1 5mm X 7mm 35 V 5mm X 11mm 50 V

Capacitors are all high quality, switching power supply grade, low ESR, and long life ratings. The 3300uf cap is the longest life rating. Upgrade notice: because of the difficulty in obtaining 10mm X 30mm 3300uf 10 volts rated capacitors, I have upgraded this to the 12.5mm X 20mm 10 volts rated capacitor. These 3300uf capacitors will fit into the space on the PSUs, but will stand above the circuit board slightly because of other components in the way at the base of the larger diameter capacitor. Note, the original 3300uf capacitors in my opinion were standing too high and shorting out on the top of the metal power supply cover as can be seen in the original trouble shooting section of the Apple iMac G5 Power Supply repair article. Note also, that some of the capacitors have been upgraded in voltage ratings. This was done as a matter of choice, in that a higher voltage is not necessarily required in the power supply, but where appropriate sizes were available in higher voltage ratings, I made the upgrade substitutions for extended performance and life expectancies.


Power Supply “B”

imac-g5-psu-capacitors-locations

Apple iMac G5 Power Supply 17 Inch “B” Style

9 Capacitors Listed

Capacitor uf Quantity Required Approx. Original Size Measured & Voltage Capacitors Replacement Upgrade
4700uf 1 10mm X 30mm 6.3 V 12.5mm X 25mm 10 V
2200uf 2 10mm X 24mm 10 V 10mm X 25mm 10 V
1000uf 3 8mm X 16mm 6.3 V 8mm X 20mm 16 V
1200uf 1 10mm X 24mm 16 V 10mm X 20mm 16 V
1000uf 1 12.5mm X 20mm 35V 12.5mm X 20mm 35 V
330uf 1 10mm X 20mm 35 V 10mm X 12.5mm 35 V

Capacitors are all high quality, switching power supply grade, low ESR, and long life ratings. The 4700uf is the longest life rated. Upgrade notice: Because of the difficulty in obtaining 10mm X 30mm 4700uf 6.3 Volts rated capacitors, I have upgraded the 4700uf to the 12.5mm X 25mm size 10 Volts rated capacitor. These 4700uf capacitors will fit into the space on the PSUs, but will stand above the circuit board slightly because of other components in the way at the base of the larger diameter capacitor. Note, the original 4700uf capacitors in my opinion were standing too high and shorting out on the top of the metal power supply cover as can be seen in the original trouble shooting section of the Apple iMac G5 Power Supply repair article I wrote.

Some of the other capacitors have been upgraded in voltage ratings too. This was done as a matter of choice, in that a higher voltage is not necessarily required in the power supply, but where appropriate sizes were available in higher voltage ratings, I made the upgrade substitutions for extended performance and life expectancies.

I include a replacement chart showing the original value capacitor and the replacement value capacitor with your PSU cap order. Please refer to this chart when installing the new caps.


Power Supply “C”

20inch-imac-psu-1st-gen

Apple iMac G5 Power Supply 20 Inch “C” Style

11 Capacitors Listed

Capacitor uf Quantity Required Approx. Original Size Measured & Voltage Capacitors Replacement Upgrade
3300uf 1 10mm X 30mm 10 V 12.5mm X 20mm 10 V
2200uf 3 10mm X 24mm 10 V 10mm X 25mm 10 V
1000uf 2 8mm X 18mm 10 V 8mm X 20mm 16 V
1200uf 1 10mm X 24mm 16 V 10mm X 20mm 16 V
1000uf 1 12.5mm X 20mm 25 V 12.5mm X 20mm 35 V
330uf 1 10mm X 20mm 35 V 10mm X 12.5mm 35 V
120uf 1 8mm X 14mm 50 V 8mm X 15mm 50 V
10uf 1 5mm X 7mm 50 V 5mm X 7mm 50 V

Capacitors are all high quality, switching power supply grade, low ESR, and long life ratings. The 3300uf is the longest life. Upgrade notice: Because of the difficulty in obtaining 10mm X 30mm 3300uf 10 volts rated capacitors, I have upgraded this to the 12.5mm X 20mm 10 Volts rated capacitor. These 3300uf capacitors will fit into the space on the PSUs, but will stand slightly above the circuit board because of other components in the way at the base of the larger diameter capacitor. Note, the original 3300uf capacitors in my opinion were standing too high and shorting out on the top of the metal power supply cover as can be seen in the original trouble shooting section of the Apple iMac G5 Power Supply repair article.

The caps have a significantly longer life rating than the originals, and will fit inside the case with no problems. As far a clearance in the case, it actually has approximately 31mm height capabilities from the top of the printed circuit board to the inside of the metal cover. Note also that some of the capacitors have been upgraded in voltage ratings. This was done as a matter of choice, in that a higher voltage is not necessarily required in the power supply, but where appropriate sizes were available in higher voltage ratings, I made the upgrade substitutions for extended performance and life expectancies.

I include a replacement chart showing the original value capacitor and the replacement value capacitor with your PSU cap order. Please refer to this chart when installing the new caps.


Power Supply “DD”

imac-psu-new-version

Apple iMac G5 Power Supply “DD” Style

9 Total Capacitors Listed

Capacitor uF Quantity Required Approx. Original Size Measured & Voltage Capacitors Replacement Upgrade
1200uF 1 10mm X 24mm 16 V 10mm X 20mm 16 V
2200uF 2 10mm X 24mm 10 V 10mm X 25mm 10 V
1000uF 4 8mm X 20mm 10 V 8mm X 20mm 16 V
120uF 1 8mm X 14mm 50 V 8mm X 15mm 50 V
1000uf 1 12.5mm X 20mm 35 V 12.5mm X 20mm 35 V

Capacitors are all high quality, switching power supply grade, low ESR, and long life ratings. These caps have a significantly longer life rating than the originals, and will fit inside the case with no problems. The case actually has approximately 31mm height capabilities from the top of the printed circuit board to the inside of the metal cover. Upgrade notice: I have upgraded some of the capacitors to higher voltage ratings. This was done as a matter of choice, in that a higher voltage is not necessarily required in the power supply, but where appropriate sizes were available in higher voltage ratings, I made the upgrade substitutions for extended performance and life expectancies.

I include a replacement chart showing the original value capacitor and the replacement value capacitor with your PSU cap order. Please refer to this chart when installing the new caps.


Power Supply “EE”

EE-PSU-iMac

Apple iMac G5 Power Supply “EE” Style

9 Total Capacitors Listed

Capacitor uF Quantity Required Approx. Original Size Measured & Voltage Capacitors Replacement Upgrade
4700uf 1 10mm X 30mm 6.3 V 12.5mm X 25mm 6.3 V
1200uF 1 10mm X 23mm 16 V 10mm X 20mm 16 V
2200uF 1 10mm X 23mm 6.3 V 10mm X 25mm 10 V
1000uF 3 8mm X 16mm 6.3 V ** 8mm X 20mm 16 V
1000uf 1 8mm X 19mm 10 V ** 8mm X 20mm 16 V
330uF 1 10mm X 20mm 35 V 10mm X 12.5mm 35 V
22uf 1 4.5mm X 12mm 50 V 5mm X 11mm 50 V

Capacitors are all high quality, switching power supply grade, low ESR, and long life ratings.

Upgrade notice: Because of the difficulty in obtaining 10mm X 30mm 4700uf 6.3 Volts rated capacitors, I have upgraded the 4700uf to the 12.5mm X 25mm size 6.3 Volts rated capacitor. These 4700uf capacitors will fit into the space on the PSUs, but will stand above the circuit board slightly because of other components in the way at the base of the larger diameter capacitor.

** Note the replacement value of the different voltage rating 1000uF caps (three 6.3 V and one 10 V) to a total of four 1000uF 16 volt caps. These 1000uF caps are slightly taller but will clear the top cover of the PSU.

Also note the original 4700uf capacitors, in my opinion, were standing too high and shorting out on the top of the metal power supply cover as can be seen in the original trouble shooting section of the Apple iMac G5 Power Supply repair article I wrote. Note also, that some of the capacitors have been upgraded in voltage ratings as I have said before. This was done as a matter of choice, in that a higher voltage is not necessarily required in the power supply, but where appropriate sizes were available in higher voltage ratings, I made the upgrade substitutions for extended performance and life expectancies.

I include a replacement chart showing the original value capacitor and the replacement value capacitor with your PSU cap order. Please refer to this chart when installing the new caps.

 


Apple Power Supply Unit Model “S”

Apple iSight iMac PSU

Apple iMac iSight Power Supply “S” Style

6 Total Capacitors Listed

Capacitor uF Quantity Required Approx. Original Size Measured & Voltage Capacitors Replacement Upgrade
1000uF 1 10mm X 20mm 16 V 10mm X 16mm 16 V
2200uF 3 12.5mm X 25mm 16 V 12.5mm X 25mm 16 V
68uF 1 6.3mm X 11mm 25 V 6.3mm X 11.2mm 35 V
22uf 1 5mm X 11mm 50 V 5mm X 11mm 50 V

Capacitors are all high quality, switching power supply grade, low ESR, and long life ratings.

Note that one of the capacitors has been upgraded in voltage ratings as I have said before. This was done as a matter of choice, in that a higher voltage is not necessarily required in the power supply, but where appropriate sizes were available in higher voltage ratings, I made the upgrade substitutions for extended performance and life expectancies.

I include a replacement chart showing the original value capacitor and the replacement value capacitor with your PSU cap order. Please refer to this chart when installing the new caps.

Order Your Proper iMac G5 Power Supply Capacitors Kit

Match up your power supply with the power supply above. Double check your capacitors against the capacitor lists above before placing your order at my eCommerce Out West Store. If you don’t see your power supply displayed here, I suggest you contact me first before placing the order. All orders and secure payments are processed with Secure Google Checkout and allowing you to use any major credit card of your choice for purchases.

low-esr-capacitors When installing the new capacitors, the positive lead is the longer lead, and the negative lead is the shorter lead. The capacitors have a long wide line printed on the side, that matches up to the negative lead on the capacitor. This must be properly aligned with the proper holes on the power supply printed circuit board. Make sure the capacitors are installed properly. The circuit board is typically marked with a circle of where the capacitors mount, and the positive or negative terminal is also indicated on the PCB. *Warning: If you install the capacitors in backwards, they will become damaged or explode when the unit is turned on. Making this mistake, can also damage other components in your iMac. So, pay attention, and be careful. If you are not sure, take a picture of your own power supply before you start working on it, so you can reference the old ones with the new ones.

I suggest you replace one capacitor at a time, so you do not mix up which one goes where. Another warning. Don’t make this mistake of installing them in the wrong location, because the power supply will not function properly.

In addition, be aware that there are surface mount components on the bottom of the PCB. Be careful when soldering. A standard 60/40 or lead free rosin core solder may be used, however, be aware that the original solder on the circuit board was lead free solder, and the two different alloy types melt at different temperatures, which can easily result in cold solder joints when using a lead solder instead of lead free solder for reworking the board. Do not use acid core or acid flux with your solder. Damage to the circuit board will result if you use the wrong solder core type. I do recommend using lead free solder for the best reworked solder joints. Refer to the lead free soldering tips article for more detailed information.

Please be aware that not all the power supplies can be repaired with just the capacitors being replaced. Sometimes a power supply blows something else besides the capacitors. Diodes, rectifiers, transistors, resistors, and surface mount components can go bad because of the iMac G5 capacitor failures. I will say this though, there is a high degree of success in replacing the caps on the Power Supply Units. The caps on the PSUs are actually easier to unsolder and solder on the printed circuit board as compared to the MOB caps.

LED Indicator Lights on Motherboard Main Logic Card

iMac G5 LED Indicator Lights

The LEDs on the main logic board (motherboard or MOB) indicate the following:

  • LED #1 means it is detecting trickle voltage from the power supply unit, PSU. If you don’t see this LED, with the machine off but plugged in, it is not a good candidate for PSU repairs unless fuse is blown on the PSU itself, and the PSU should be replaced in this case. Also note that seeing LED #1 on, does not mean the PSU is completely good.
  • LED #2 comes on when the MOB sees all the correct powers (proper voltages present from PSU).
  • LED #3 indicates the computer and LCD are talking (communicating) OK.
  • LED #4 is strictly an overheating indicator LED, and should not go on under normal circumstances.

Notice the slight bulging of the capacitors on the main circuit board above. This indicates that these are bad capacitors and the MOB capacitors should be replaced at this time. Keep in mind, both the PSU and the MOB caps can be bad at the same time. Refer to the repairing the iMac G5 article for more information.

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