Comments on: Apple iMac G5 Power Supplies Capacitors http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php The Internet Place for a Wide Variety of Topics Wed, 08 Feb 2012 22:40:17 +0000 hourly 1 http://wordpress.org/?v=3.3 By: Jim Warholic http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1417 Jim Warholic Thu, 01 Dec 2011 18:13:09 +0000 http://jimwarholic.com/blog/?p=4#comment-1417 Hi Dave, If you care to send me a picture, I'll take a look. Since I updated my website with the new theme, I had forgotten to have my direct email link on the right sidebar area. So, I have added near the top side area. As far as your problem is concerned, is the PSU connector the same as the other ones? If it is, you should be able to measure the voltages using the <a href="http://jimwarholic.com/2010/03/measuring-imac-g5-power-supply-voltages-at-connector-plug-pinouts.php">Apple iMac pinout information</a> link found here. It might be that one of the voltages are missing or low on the PSU. Regards, <a href="http://jimwarholic.com/contact">Jim</a> Hi Dave,

If you care to send me a picture, I’ll take a look. Since I updated my website with the new theme, I had forgotten to have my direct email link on the right sidebar area. So, I have added near the top side area.

As far as your problem is concerned, is the PSU connector the same as the other ones? If it is, you should be able to measure the voltages using the Apple iMac pinout information link found here.

It might be that one of the voltages are missing or low on the PSU.

Regards,

Jim

]]> By: David Piper http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1416 David Piper Thu, 01 Dec 2011 16:10:22 +0000 http://jimwarholic.com/blog/?p=4#comment-1416 Hi Jim, I have a 20 inch G5 Isight Imac 3rd Generation which will not start up. When the power cable is plugged in, the 1st LED lights up but when I press the power on button it goes out and 2nd LED does not light up either. I have had a look at the PSU and the caps are not bulging or leaking. Do you have any idea what it could be? You don't have a picture of my type of PSU Thanks in advance Dave Hi Jim,

I have a 20 inch G5 Isight Imac 3rd Generation which will not start up. When the power cable is plugged in, the 1st LED lights up but when I press the power on button it goes out and 2nd LED does not light up either. I have had a look at the PSU and the caps are not bulging or leaking. Do you have any idea what it could be? You don’t have a picture of my type of PSU

Thanks in advance

Dave

]]> By: Jim Warholic http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1357 Jim Warholic Mon, 14 Nov 2011 15:06:27 +0000 http://jimwarholic.com/blog/?p=4#comment-1357 Eric, I would take a close look at the capacitors on the power supply. If any of the capacitors are bulging, then it is probably an indication that the power supply is at least causing part of your problem. Note that the <a href="http://jimwarholic.com/category/isight">iSight</a> models sometimes have other issues to contend with also. <a href="http://jimwarholic.com/contact">Jim</a> Eric,

I would take a close look at the capacitors on the power supply. If any of the capacitors are bulging, then it is probably an indication that the power supply is at least causing part of your problem. Note that the iSight models sometimes have other issues to contend with also.

Jim

]]> By: eric http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1356 eric Mon, 14 Nov 2011 14:40:18 +0000 http://jimwarholic.com/blog/?p=4#comment-1356 Hi, I have 2 iMac 17 iSight G5 and core2duo 2 Ghz : it's the same power : PSU S the two iMac don't start nothing nothing : do you think it's only the capacitors ? capacitor issue on the iMac start but stop after few second or not ? Thank for feedback before sell them. eric Hi,

I have 2 iMac 17 iSight G5 and core2duo 2 Ghz : it’s the same power : PSU S
the two iMac don’t start nothing nothing :
do you think it’s only the capacitors ?
capacitor issue on the iMac start but stop after few second or not ?
Thank for feedback before sell them.

eric

]]> By: Jim Warholic http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1269 Jim Warholic Tue, 18 Oct 2011 23:17:15 +0000 http://jimwarholic.com/blog/?p=4#comment-1269 No, I haven't seen the pinout diagram on the Apple iSight PSU models. Maybe someone will post it here or send me an email with the schematic diagram (even a hand drawn one would work too). Thanks in advance. No, I haven’t seen the pinout diagram on the Apple iSight PSU models. Maybe someone will post it here or send me an email with the schematic diagram (even a hand drawn one would work too). Thanks in advance.

]]> By: paul http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1268 paul Tue, 18 Oct 2011 23:12:57 +0000 http://jimwarholic.com/blog/?p=4#comment-1268 Hi Jim, Do you have a pinout for the iSight power supplies or know where to locate one? Hi Jim, Do you have a pinout for the iSight power supplies or know where to locate one?

]]> By: Jim Warholic http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1257 Jim Warholic Fri, 14 Oct 2011 01:54:35 +0000 http://jimwarholic.com/blog/?p=4#comment-1257 No, never have seen it nor heard of it before. I would be curious as to what is located at number three location. The number three location should have a 3300uF 10 volt cap, and the number two location should have the 1200uF 16 volt capacitor for the "C" model PSUs. No, never have seen it nor heard of it before. I would be curious as to what is located at number three location. The number three location should have a 3300uF 10 volt cap, and the number two location should have the 1200uF 16 volt capacitor for the “C” model PSUs.

]]> By: Rob http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1256 Rob Fri, 14 Oct 2011 01:23:32 +0000 http://jimwarholic.com/blog/?p=4#comment-1256 My power supply is a C model, it all matches perfectly, except that when I started replacing the caps, number two is a 3300, not a 1200 as supplied in your kit. Have you seen this before, and what do I do? The board looks original, and the gray goop holding the caps in was undisturbed. Thanks. My power supply is a C model, it all matches perfectly, except that when I started replacing the caps, number two is a 3300, not a 1200 as supplied in your kit. Have you seen this before, and what do I do? The board looks original, and the gray goop holding the caps in was undisturbed.
Thanks.

]]> By: Jim Warholic http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1186 Jim Warholic Tue, 16 Aug 2011 15:56:43 +0000 http://jimwarholic.com/blog/?p=4#comment-1186 @ Kevin Yes, if the clicking is coming from the power supply, I suspect it is some sort of electrical arcing, maybe inside the small transformer, or the circuit is being electrically "clamped" off repeatedly due to a defective component. It would be wise to test the PSU on the bench, out of the computer, to verify what it does under no load. Suggest measuring the voltages this way if you can. @ Kevin

Yes, if the clicking is coming from the power supply, I suspect it is some sort of electrical arcing, maybe inside the small transformer, or the circuit is being electrically “clamped” off repeatedly due to a defective component. It would be wise to test the PSU on the bench, out of the computer, to verify what it does under no load. Suggest measuring the voltages this way if you can.

]]> By: Kevin http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1184 Kevin Tue, 16 Aug 2011 13:21:14 +0000 http://jimwarholic.com/blog/?p=4#comment-1184 Jim, I have this same G5 iMac and no power when plugged in. I hear what seems to be small electrical noises as soon as I plug the unit in, sounds like small electrical arching. Is that a noise a bad power supply would make? Jim, I have this same G5 iMac and no power when plugged in. I hear what seems to be small electrical noises as soon as I plug the unit in, sounds like small electrical arching. Is that a noise a bad power supply would make?

]]> By: Jim Warholic http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1150 Jim Warholic Thu, 21 Jul 2011 01:34:34 +0000 http://jimwarholic.com/blog/?p=4#comment-1150 I suspect the PSU capacitors are faulty. As far as which kit you require, take a look at the various Apple iMac PSU listed here and match your up to the pictures. If you do not see your exact model, I suggest comparing the list of caps to yours. I suspect the PSU capacitors are faulty. As far as which kit you require, take a look at the various Apple iMac PSU listed here and match your up to the pictures. If you do not see your exact model, I suggest comparing the list of caps to yours.

]]> By: jeff http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1149 jeff Wed, 20 Jul 2011 16:11:38 +0000 http://jimwarholic.com/blog/?p=4#comment-1149 I was told at the apple store that I have two capacitors that are blown and a third one is leaking and about to go. I brought it in to the store because when I pressed the button to start, nothing happend - no noise, no light not anything. I thought it was the power supply which I replaced two years ago. After taking the back off and looking at it, the apple store told me it was the capacitors, but amazingly after this, my mac powered back on and seems fine now (at least for the short term). It's a IMac G5 17" bought in feb 2005. The part for the power supply was 661-3351. How much would the capacitors cost if I (or someone else who knows how to replace them) cost. Replacing the logic board entirely would not be worth the cost. I never saw the capacitors that were not good and am wondering if there are specific types that I need? I was told at the apple store that I have two capacitors that are blown and a third one is leaking and about to go. I brought it in to the store because when I pressed the button to start, nothing happend – no noise, no light not anything. I thought it was the power supply which I replaced two years ago. After taking the back off and looking at it, the apple store told me it was the capacitors, but amazingly after this, my mac powered back on and seems fine now (at least for the short term). It’s a IMac G5 17″ bought in feb 2005. The part for the power supply was 661-3351. How much would the capacitors cost if I (or someone else who knows how to replace them) cost. Replacing the logic board entirely would not be worth the cost. I never saw the capacitors that were not good and am wondering if there are specific types that I need?

]]> By: Jim Warholic http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1135 Jim Warholic Sun, 10 Jul 2011 23:58:41 +0000 http://jimwarholic.com/blog/?p=4#comment-1135 Yes, the pinout is different on the iMac iSight models. If anyone has the pinout information on those, it would be much appreciated. Regards, <a href="http://wow.jimwarholic.com/contact.php">Jim</a> Yes, the pinout is different on the iMac iSight models. If anyone has the pinout information on those, it would be much appreciated.

Regards,

Jim

]]> By: Peter Eye http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1134 Peter Eye Sun, 10 Jul 2011 22:47:03 +0000 http://jimwarholic.com/blog/?p=4#comment-1134 I have a late 2005 Imac g5 Isight the power supply is a 614-0378 it has 2 ac in and ONLY 3 wires out 12.1 GRAY volts,ground BLACK,and PFW BROWN does anyone know what the brown wire is supposed to read? Ps is marked as 12.1v @15.4A I do read 12.1 on gray wire and #1 led is on THIS INFO IS NOT IN ANY ARTICLE ON THIS SITE can anyone help? thanks in advance I have a late 2005 Imac g5 Isight
the power supply is a 614-0378
it has 2 ac in and ONLY 3 wires out 12.1 GRAY volts,ground BLACK,and PFW BROWN
does anyone know what the brown wire is supposed to read?
Ps is marked as 12.1v @15.4A I do read 12.1 on gray wire
and #1 led is on
THIS INFO IS NOT IN ANY ARTICLE ON THIS SITE
can anyone help?
thanks in advance

]]> By: Jim Warholic http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1080 Jim Warholic Fri, 06 May 2011 18:29:05 +0000 http://jimwarholic.com/blog/?p=4#comment-1080 Hello Lee, Depending on the meter that you are using, it is difficult to verify the integrity of the caps with an ohmmeter. Once the capacitor charges up when the meter is attached, it will then look open. I have not seen these input caps ever go out. If they were to go out, then the PSU is likely to have taken a hard voltage surge, low conditions, or something related with the incoming power issues. Hello Lee,

Depending on the meter that you are using, it is difficult to verify the integrity of the caps with an ohmmeter. Once the capacitor charges up when the meter is attached, it will then look open. I have not seen these input caps ever go out. If they were to go out, then the PSU is likely to have taken a hard voltage surge, low conditions, or something related with the incoming power issues.

]]> By: Lee M http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1077 Lee M Fri, 06 May 2011 05:39:46 +0000 http://jimwarholic.com/blog/?p=4#comment-1077 I am installing capacitors in a "B" type power supply, it is a new part number 614-0293. The hard to remove case screws use a Torx T-10 Tamperproof Bit. The bit has a drilled indentation in the tip that fits over the pin in the center of the screw head. I got my bit as part of a tamperproof torx bit socket set sold at an automotive supply. You can replace the Tamperproof case screws with hardware store screws. The description is metric flathead screw, 3 mm diameter by 6 mm length. Ohmeter measurements suggest one of the 560 mfd 200 volt input capacitors on my power supply is open. The capacitors measure 18.21 mm diameter and 46.14 mm length. It appears to be another hard to match capacitor. I am installing capacitors in a “B” type power supply, it is a new part number 614-0293.

The hard to remove case screws use a Torx T-10 Tamperproof Bit. The bit has a drilled indentation in the tip that fits over the pin in the center of the screw head. I got my bit as part of a tamperproof torx bit socket set sold at an automotive supply.

You can replace the Tamperproof case screws with hardware store screws. The description is metric flathead screw, 3 mm diameter by 6 mm length.

Ohmeter measurements suggest one of the 560 mfd 200 volt input capacitors on my power supply is open. The capacitors measure 18.21 mm diameter and 46.14 mm length. It appears to be another hard to match capacitor.

]]> By: Tom den Daas http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1068 Tom den Daas Fri, 29 Apr 2011 12:50:47 +0000 http://jimwarholic.com/blog/?p=4#comment-1068 I have repaired 2 macs 17 inch with the help of your website. Thank you very much. I have repaired 2 macs 17 inch with the help of your website.

Thank you very much.

]]> By: Jim Warholic http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1059 Jim Warholic Tue, 26 Apr 2011 15:31:27 +0000 http://jimwarholic.com/blog/?p=4#comment-1059 Some of the PSUs are interchangeable, while others are not. Some of the chassis are slightly different. I also believe there are differences between the current capabilities (on select voltages) of some of the power supplies, especially those between the 20 inch vs 17 inch iMac G5 models, though they all seem to have the same wattage stamped on the case. Also, as you point out, some of the PSUs have the ambient light sensors attached in a slightly recessed area of the PSU, and others do not, nor do they have the recessed area. Additionally, I think there are differences in source AC voltage requirements. Some of the PSUs can be <a href="http://en.wikipedia.org/wiki/Mains_electricity_by_country">used in countries</a> with 220/230 VAC 50 HZ, some only on 120 VAC 60 HZ electricity supplied, while others can be used in either case. As far as why Apple designed so many different models of power supplies, with so many different P/Ns, it is anybody's guess. Maybe it is because they were having so many issues with the PSUs themselves that they tried redesigning them numerous times, but somehow never got them quite right. This is just conjecture on my part. Some of the PSUs are interchangeable, while others are not. Some of the chassis are slightly different. I also believe there are differences between the current capabilities (on select voltages) of some of the power supplies, especially those between the 20 inch vs 17 inch iMac G5 models, though they all seem to have the same wattage stamped on the case. Also, as you point out, some of the PSUs have the ambient light sensors attached in a slightly recessed area of the PSU, and others do not, nor do they have the recessed area.

Additionally, I think there are differences in source AC voltage requirements. Some of the PSUs can be used in countries with 220/230 VAC 50 HZ, some only on 120 VAC 60 HZ electricity supplied, while others can be used in either case.

As far as why Apple designed so many different models of power supplies, with so many different P/Ns, it is anybody’s guess. Maybe it is because they were having so many issues with the PSUs themselves that they tried redesigning them numerous times, but somehow never got them quite right. This is just conjecture on my part.

]]> By: paul swallow http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-1057 paul swallow Tue, 26 Apr 2011 07:02:10 +0000 http://jimwarholic.com/blog/?p=4#comment-1057 Are the different part numbers for the 17" G5 interchangeable.. like will a 614-0279 interchange with a 614-0365 or a 614-0340 non ALS? The reason I asked the question is because I have a 17" G5 model M9843 EMC 2055 which is a second generation G5 with ambient light sensor. However the power supply is a non ALS #614-0365. I ordered your cap kit for this model and if the PSU is scrap, I'll need to replace it. Thank you Are the different part numbers for the 17″ G5 interchangeable..
like will a 614-0279 interchange with a 614-0365 or a 614-0340 non ALS?

The reason I asked the question is because I have a 17″ G5 model M9843 EMC 2055 which is a second generation G5 with ambient light sensor. However the power supply is a non ALS #614-0365. I ordered your cap kit for this model and if the PSU is scrap, I’ll need to replace it.

Thank you

]]> By: Jim Warholic http://jimwarholic.com/2009/04/apple-imac-g5-power-supplies-capacitors.php/comment-page-1#comment-978 Jim Warholic Thu, 10 Feb 2011 05:10:49 +0000 http://jimwarholic.com/blog/?p=4#comment-978 To identify which capacitor kit is required for your power supply unit, the recommended way is to open it up and verify your PSU to the pictures of the different types. See above. To identify which capacitor kit is required for your power supply unit, the recommended way is to open it up and verify your PSU to the pictures of the different types. See above.

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