So my Hard Drive Fan will run the full speed after 10 mins when I power on.

I google the solution and someone suggest that I can jump the connector to make the sensor short then it will show 0 C degree.

It works but I afraid the Hard Drive will overheat when I use for a long time.

Do you have any solution to solve this problem?

Thank you.

⟐ Answer edited May 23, 2013 at 11:20 am -0700

I want to give my iMac i3 an upgrade to i5 or i7 processor.

I've red some posts of some people who tried several combinations.

Some combinations worked, some didn't.

The CPU's that didn't work were the CPU's with a TDP of 95W.

The i5 CPU's that have been tried out and worked were the CPU's with a TDP of 73W. My big question is; There are several CPU's with a TDP of 82W like the i5 750S/i7 860S/i7 870S.

Will those CPU's work? I can't find any information on the web with these specific CPU's....

The TDP is ±9W higher then the standard i3..

Thanks.

⟐ Commented May 18, 2013 at 6:31 pm -0700

We have changed everything except Logic Board - VGA, PSU, Cables, RAM, Inverter. PRAM & SMC Reset.

Mobo LED'S show all except 4 which from what I read is normal - this should only light if there is a temp problem.

I've trawled and trawled and cannot find anything - The fact that I now have two here in the space of 2 months makes me think there is an answer to be found. The first mac was built May 2011 and the second Mac January 2012 so a big gap in manufacturing.

If anyone has any suggestions I would be grateful.

KR Shaun

⟐ Answered May 16, 2013 at 8:05 am -0700

⟐ Answered May 14, 2013 at 12:52 pm -0700

I have this iMac. It doesn't boot properly: Sometimes it works for a while but then it crashes. After a crash (complete freeze) it doens't boot properly: I have a blank screen with the pointer only and arount the pointer there's some graphical "noise".

After the initial problem I tried and got the system to boot in SAFE MODE. I copied all the files I needed and formatted the drive, reinstalled OSX 10.8.3. Worked fine for a while, same problem now (Just to know: I didn't copy the personal files to make sure the problem wasn't related).

Since the crashes happen after some use and the iMac seems to be very "used" I'm going to disassembly it and clean the interior (suppose is a overheating problem).

Just wanted to know if it is a common problem and if it's related to special components I have to swap (could be GPU?)

Thanks,

A

⟐ Commented May 14, 2013 at 11:05 am -0700

⟐ Answer accepted May 13, 2013 at 7:19 am -0700

can anyone please tell me, where i can physically find the "Power Secondary Heatsink" Temp Sensor ?

iStat Pro tells me that the Temp sometimes runs up to 90°Celsius (approx 194°F) (with a CPU Load up to 60% )

IDLE the 2nd Heatsink is about 60°C - 75°C (140°F - 165°F)

'''Today i disassembled the iMac completely and i looked for all those Temp. Sensors, but i couldn`t find anyone on a "Heatsink" only near the CPU & the GPU, Ambient, Display, ODD,.

is it maybe on the Power Adaptor?

'''

1,5 Years ago, i upgraded a SSD -CORSAIR Force 3 and to Control the HDD Fan i use SSD-Fan Control,

(it runs Manually 1700Rpm, cause the S.M.A.R.T. stat from the SSD couldn`t be read out by the iMac... don`t know why, maybe a Firmware Bug)

thx for your help!

⟐ Answer accepted May 6, 2013 at 3:15 am -0700

I have a EMC 2389 21.5 inch iMac it doesn't turn on. No chime, no Fans, nothing i opened it and I'm looking for the diagnostic leds to see if the internal power supply its really the culprit.

Can someone please show me light! Thanks for your time in advance! :)

⟐ Answer accepted April 23, 2013 at 8:20 pm -0700

I did a SMC PRAM reset, I took the RAM away and reinserted again but nothing happens.

is there anyway to replace it by myself? I'm not in the USA.

Thanks Oldturkey03, pollytintop and Dan: The EMC is 2389. The display doesn't work at all, no backlight no picture, it is not even being detected. Right now I'm working with a Plasma TV.

I had the same problem with the original data ribbon which has the SN: 593-1280 REV A and then part I ordered from Macpartsonline is 593 - 1280A ICT 1611 which appears to be the same except for the way how the code is shown. There is no visible damage on the socket itself.

The ribbon plugs in both sides naturally, its a perfect fit, so unless the new ribbon is also damaged I blame the display port socket, since the display was fine before I dented the old ribbon, maybe I stretched the socket or broke some pin.

I checked the diagnose LED's and it just the first three lit.

⟐ Commented April 21, 2013 at 4:57 am -0700

I bought a wrong model (see model here: http://centralart3.dominiotemporario.com...), and I know the way to change, so I just want some help to teach me how and where to buy, because here in Brazil the HDD + the labor to repair (In Apple Care Network) is about $300,00 for 1TB HD.

So if I buy this (http://www.powerbookmedic.com/10TB-Hitac...), with this (http://www.powerbookmedic.com/Intel-iMac...) my iMac will run perfectly again?

Thanks and sorry for my english.

⟐ Answer accepted March 28, 2013 at 5:27 pm -0700

I would like to know whether I can replace my broken Logic Board of iMac MID 2010 i3 3,2 Ghz with the newer i5 2,4 Ghz logic board of an iMac MID 2011 EMC 2428. Would it fit in exactly ?

⟐ Answered March 16, 2013 at 5:05 pm -0700

There some suggestion I will try again all the connection, Luigi

⟐ Answer edited March 1, 2013 at 10:03 pm -0700

⟐ Answer deleted February 28, 2013 at 1:13 pm -0700

1- I've one MBP and one iMac Mid 2010 (like this http://support.apple.com/kb/SP588?viewlo...), and the second started to crash, something like S.M.A.R.T problem. So I search in interwebz about this and I saw that isn't a way to fix it. So the first question is Can I buy this HDD "Seagate 3.5" ST2000DL003 2000GB 5900 RPM SATA 6.0GB/s Desktop Hard Drive" to replace (in Apple Care). The size's right and this RPM is ok?

2- I installed a ML version in my external drive (connecting in my MBP) and It booted fine, for a moment I was a glad guy, so I restarted the OS in original MBP HDD and ejected the "External Mountain Lion" to plug in iMac and try to use. But when I try, It doesn't boot, just Apple loading screen, but I can access the 10.8.2 recuperation application (both, original from HD and the External too...), moreover I've a Bootcamp partition running win 7 perfectly. So I don't understand how can I start the recuperation application and win7 bootcamp, boot the External ML in my MBP, and I cannot boot the "External Mountain Lion" from external drive in iMac?

⟐ Answer accepted February 19, 2013 at 9:49 am -0700

I see apple and rotates from below end after 5-10 minutes ago system is ready I work OS sometimes stuck and returns as normal.

I changed hard disk to 1 TB

I changed the memory to 10 GB

Who can help me

⟐ Answered February 3, 2013 at 3:44 pm -0700

Im about to follow this guide :-

Link text

And im wondering. My mate says that I wont be able to set my SSD as a boot drive because Mac OSX will see it as a disk drive.

Is this true?

Just need to know

Ross

⟐ Answered January 30, 2013 at 4:42 pm -0700

I was facing some troubles with my hard disk, so I bought a new HD (HD Seagate 2TB Sata 6GB/s - Barracuda Lp), it's 3,5', Sata, so everything seems good.

But today I removed the old Hard Disk and put the new, at this time my troubles came back... After the installation I simple boot my iMac (I've an OS on external drive) and when it boot, it alerts me about a disk (that need to be formated), when I open the Disk Utility I see this (http://pix.am/rZQ5/), anyone knows If I was dweeb on installation or it's a compatible issue?

⟐ Answer deleted January 30, 2013 at 11:38 am -0700

⟐ Commented January 25, 2013 at 8:47 pm -0700

iMac 21.5" (Mid 2010)

Processor: 3.2 GHz Intel Core i3

Memory: 12 GB 1333 MHz DDR3

Graphics: ATI Radeon HD 5670 512 MB

I want to upgrade my CPU to an i5 or i7. Also I want to upgrade my graphics card. Can I do these upgrades? If YES, can you tell me exactly what parts do I need? (CPU model, Graphics Card model).

Thanks

⟐ Answer edited January 14, 2013 at 9:20 am -0700

I am looking for a new Display because mine is faulty.

My question is now which one can I use?

LM215WF3 SD A1 ?

Or also another one?

LM215WF3 SL A1 LM215WF3 S B1 and so on?

And is there a possibility to check the display itself without testing it on my iMac?

Beacuse Iam not sure if it the connector or the Mainboard.

By the way: Display is black an external is working, 4th led off

Thank you very much for help!

⟐ Commented January 11, 2013 at 6:57 am -0700

Can i upgrade this video card to another better? If it's yes, what video card do you recommend?

Thanks.

⟐ Commented January 4, 2013 at 7:23 am -0700

⟐ Commented January 2, 2013 at 12:18 pm -0700

I have checked the specs of these processors on the Intel site and the i7 has lower power consumption than the i5 currently in my iMac and uses the same socket, so I assume it will work in the old 2010 model (I read on another iFixit post that you cannot use a CPU with higher power consumption) but I would appreciate if anyone could tell me if there are any other potential problems I might run into.

Thanks in advance for any help!

⟐ Commented December 19, 2012 at 7:14 pm -0700

Basically, is there any fundamental difference in the logic boards that would prevent newer components from working?

I've read successful reports of people adding an i7 to an older i5 machine (as long as the power consumption is the same or lower on the new chip) so I wanted to know if the same could be done with the GPU. For example, I'd like to replace the Radeon 5670 with the newer 6770. The newer chip is GDDR5 whereas the older 5670 is GDDR3 - would this cause any incompatibility?

I would really appreciate any advice from someone who knows what they're talking about with regards to iMac logic boards - if it's just the components and not the boards themselves that are replaced in the newer models, I don't see why the newer components couldn't be swapped into older machines.

⟐ Commented December 18, 2012 at 9:32 am -0700

I have an iMac 11,2 (A1311) here, after turning on the iMac, there is no picture showing up, no typical Mac chime, Diag LEDs onboard showing LED 1&2 coming up, LED 3/4 is dark. I already changed the video card, same result. Connectors are fine, nothing broken. Unfortunately I think that the LogicBoard is defective, but as a replacement is very expensive, I hope that someone might have another recommendation/ tip?

Thanks,

Marcus

⟐ Commented December 17, 2012 at 1:10 am -0700

⟐ Answered December 12, 2012 at 8:11 pm -0700

Maybe I´m being stupid here so I thought you could help me out:

I want to get more mileage out of my iMac 21" 2010 and when I heard about fusion drive ( http://www.anandtech.com/show/6406/under... ) it hit me:

Pull the 500GB 3,5" HD and swap it for a 2*2.5"to 3.5" adapter tray (like this one http://www.newegg.com/Product/Product.as... ) and install a 1TB 2.5 HD plus a 128GB or 256GB SSD in its place.

Obviously I´d need a SATA Y-cable to connect two drives to the motherboard (or is there a spare SATA connector?)

Anybody tried this before?

Any practical theoretical roadblocks?

Would love to get your input.

cheers

Matt

⟐ Answered December 5, 2012 at 3:02 pm -0700

I already read a post about a similar problem, but my case is slightly different...

My monitor suddenly shows colored vertical stripes, going from top to bottom (only half of the top Menu Bar is correctly displayed). The stripes are not fixed, they vary in width and colour depending on what is displayed. An attached monitor set as primary works fine.

I have been told it could be either the display or the graphic card (or hopefully just something concerning the connection between the two).

I would like to open my iMac with the help of one of the great guides I found here, but I don't really know what I am looking for... can you help me? Is it really a problem I can fix myself?

I add a pic of my monitor, maybe it can help...

http://cl.ly/L5TY

⟐ Commented November 24, 2012 at 10:42 pm -0700

⟐ Commented September 17, 2012 at 8:19 am -0700

Thanks

⟐ Answer edited September 14, 2012 at 8:01 am -0700

I just want to know of the kit that you're selling for installing a ssd, work on a mid2010 iMac?

If no, why? Are the sata cables not the same?

Best regards

⟐ Answered August 23, 2012 at 5:15 am -0700

Someone could tell me if the sata port velodad the superdrive is Sata II (3 gigabits)?

I have a Samsung SSD 830 256GB and I would like to put it where is the superdrive, and thus have SSD + HDD.

sorry for my English, I translated with Google.

a greeting

⟐ Answered August 7, 2012 at 9:10 am -0700

⟐ Commented August 7, 2012 at 7:33 am -0700

⟐ Answered July 24, 2012 at 2:14 pm -0700

Thanky you very much, I'll wait for a reply.

⟐ Answered July 12, 2012 at 5:23 am -0700

⟐ Commented July 9, 2012 at 4:37 am -0700

Do you think this is a bad PSU or logic board?

⟐ Commented June 27, 2012 at 5:59 pm -0700

Update

Power supply fixed the problem

⟐ Edited June 26, 2012 at 4:29 pm -0700

⟐ Answered June 11, 2012 at 9:36 am -0700

1. Switch on (after being off for a while)

2. Starts and loads

3. working fine then screen goes black but still has backlight

4. all diagnostics LED are on

5. sometime hear noise coming from speakers (clicking-pulsing)

6. shuts of to 1 led but fans still running ( left for 5 mis)

7. short press of power button does nothing

8. holding power button switched off (still 1 led)

9. Machine switches on

10. starts and loads

11. Switches off after 2 mins (fans stop)

12. power button press fans work but 1 led

13. hold power switch fully off

14. press power starts again

15. this just keeps going.

not sure if power supply fault, anyone have any idea?

⟐ Answer edited June 5, 2012 at 9:36 am -0700

⟐ Answered May 9, 2012 at 8:19 am -0700

If I need to change the hard disk,the old one was Western Digital 500 GB, SATA/16MB, WD5000AAKS.I searched for this model,but I can't find it here in Greece,only WD5000AAKS SATA 2/32MB or SATA 3.I read on some forums that SATA2 is compatible with SATA1.What should I choose?Thank you!

⟐ Answered April 2, 2012 at 3:57 pm -0700

⟐ Answer deleted November 29, 2011 at 5:32 pm -0700

Where can I find a Seagate 2TB HDD that I can swap out with the original?

Thanks in advance.

⟐ Answered August 27, 2011 at 7:44 pm -0700

The question is:

• What happen to my superdrive? Can I replace it with new superdrive for free because this iMac still covered with Apple Care?

• Can I replace the superdrive with a SSD? - This is my second plan if Apple Care cannot replace my superdrive.

⟐ Commented August 5, 2011 at 7:44 am -0700

I just bought for 6months

why doesn't it boot? does power supply failed?

please kinda help.. I'm Newbie of Mac

thankyou..

⟐ Edited July 7, 2011 at 10:06 am -0700

⟐ Edited May 31, 2011 at 11:25 am -0700