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Late 2009 imac upgrade to 2.5 SSD with OWC

K

koden

macrumors member
Original poster
Feb 13, 2016
61
5
Hi

I have bought the kit from OWC

OWC Digital Thermal, SMC Compatible in-line solution for all Apple 2009-2010 iMac 21.5" and 27" Models

and

NewerTech AdaptaDrive 2.5" to 3.5" Drive Converter Bracket.


The installation of the drive and everything is easy and went fine.

in the installation video from OWC they show how to attach the thermal sensor on a 3.5 standard drive.
in the top of the video they wrote:

"if using SSD drive attach the thermal cable on the drive next to sata connection".

https://eshop.macsales.com/installvideos/imac_late27_2009_hd/
about 5 min in video.

I did that... but my imac fans still run full speed.

is it the wrong place I attach the thermal sensor?
Should it have been on the back off the SSD?


I have uploaded a picture.
 

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I put mine next to the top connector. No fan problems. I find it hard to believe that your location is the cause of the problem. I have a mid-'11 and your connector is completely different than what they gave me. But you're right, their instructions are vague and I was wondering the same but I'm sure it doesn't go on the back.
 
ahh.. silly me :)

First thing.. I had used the connector for LCD temp
Moved connector to the HDD temp.

But still same issue.

But that was because the imac front was off.

Connecting the screen back with the 4 connection and it worked.. :)
 
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To me, the OWC solution is inelegant. The harness has to be shoved under the frame; I've had these harnesses break, leaving the plastic SATA divider stuck in the OEM plug; and the actual thermal sensor needs 2 wires connected to it. Plus, $39.99 for all this inelegant gear.

I'd much rather use the OEM SATA connector, and an OEM sensor. The 2007/2008 optical sensor fits the socket perfectly, and performs (from what I can tell) everything that it's supposed to. The bonus, is that the sensor is cheap - often less than $6 after shipping.
 

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Zeke D said:
To me, the OWC solution is inelegant. The harness has to be shoved under the frame; I've had these harnesses break, leaving the plastic SATA divider stuck in the OEM plug; and the actual thermal sensor needs 2 wires connected to it. Plus, $39.99 for all this inelegant gear.

I'd much rather use the OEM SATA connector, and an OEM sensor. The 2007/2008 optical sensor fits the socket perfectly, and performs (from what I can tell) everything that it's supposed to. The bonus, is that the sensor is cheap - often less than $6 after shipping.
Click to expand...
[doublepost=1505750199][/doublepost]do you have a link to those OEM parts?
 
Zeke D said:
I just searched for the part number on eBay: 593-0493

Here's the one I used: http://www.ebay.com/itm/Apple-iMac-...nsor-Cable-922-8194-PN-593-0493-/262061276596
[doublepost=1505752078][/doublepost]If yours is up and running, I wouldn't mess with it, but if you have another 2009/2010, then I recommend doing it this way...
Click to expand...


ahh.. thanks

Just the point. I have one more late 2009 to fix.

Not sure I understod it all.

Buy this sensor cable and connect to imac motherboard and the other end to where?

Did you also buy a cheap adaptadrive?
 
ahh.. sorry. had not seen picture.. seems that "the other end" is just hanging in the air over the SSD disk?
 
koden said:
ahh.. thanks

Just the point. I have one more late 2009 to fix.

Not sure I understod it all.

Buy this sensor cable and connect to imac motherboard and the other end to where?

Did you also buy a cheap adaptadrive?
Click to expand...
Right, I just put it in the path of the HDD fan. I used a piece of electrical tape cut to size to stick to the frame on the adaptadrive.

You could also use the little plastic holder for this sensor, and stick it to the SSD, but I went as cheap as possible. p/n: 922-8183: iMac Hard Drive Temp Sensor Clip.

5pk for $8: http://applecomponents.com/items/92...000001967?pn=88&cat=Service Parts&per_page=30
 
Zeke D said:
I just searched for the part number on eBay: 593-0493

Here's the one I used: http://www.ebay.com/itm/Apple-iMac-...nsor-Cable-922-8194-PN-593-0493-/262061276596
[doublepost=1505752078][/doublepost]If yours is up and running, I wouldn't mess with it, but if you have another 2009/2010, then I recommend doing it this way...
Click to expand...

Hi Zeke D,

I am about to attempt replacing my HDD in my late 2009 iMac EMC2308 and I would like to use an Optical Sensor cable as you suggested. The OWC inline thermal sensor costs upwards of £30 here which I am very reluctant to get.

You mentioned 2007/08 optical sensor p/n 593-0493 works fine while another member said 2009/10 optical drive sensor also "does the trick". Does it mean all optical drive sensor for iMac work or just a few specific ones for specific iMac?

I did a search and there are quite a number of similar Optical sensor cables around all with p/n 593-xxxx and 922-xxxx. Would any of those with similar part number works (some are for 27" but mine is 21.5") just the same or do I need to get a 593-0493 which might be hard to find here.

SK
 
mbosse said:
A 2009/2010 optical drive sensor does the trick as well, nicely.
Click to expand...

I thought you meant this 2009/10 optical drive sensor can also work as a HDD thermal sensor cable as Zede D suggested using a 2007/08 optical sensor
 
Zeke D said:
I've used the 593-0493 sensor, but any thermal sensor that has the same plug should work for the 2009 & 2010. I chose the one I did, because it was readily available, and a genuine apple part. Plus, it's available for about £5

https://www.ebay.co.uk/itm/Apple-iM...ensor-Cable-922-8194-PN-593-0493/262061276596
Click to expand...

Thanks very very much Zeke D.

I have zero experience in hard drive change and never opened a Mac before. Recently, this iMac late 2009 restarts itself frequently every 30 - 60 mins. I learnt to run Apple Hardware Test (with the installation disc 2) and it returned a 4MOT/4/40000003:HDD error. This led me into researching further and as I read on, my confidence really wears down. There are so many reports of fan problems. I almost felt like it is technically beyond me to fix it.

Your confirmation on the sensor really helps.

Here is what I shall do :
1. Get a budget SSD like a Kingston A400 240GB @ £18 (after a £15 discount voucher)
2. an Adaptadrive @ £12
3. the Optical drive temp sensor cable P/N 593-0493 £4
4. T8 and T10 Torx screwdrivers and other tools £6

I have never tried SSD before, so I hope this would work. I love this iMac, it is well built and still looks sparkling. I really want it to carry on for a while longer.

SK
 
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Opening the iMac was a lot easier than I first thought. Took out the old HDD and replaced it with the new SSD with the adaptor and most importantly, plugged the temp sensor cable 593-0493 on to the board with the other end dangled near the data socket of the SSD, wire taped to the the frame of the adapter. Many thanks to Zeke D who suggested this much cheaper cable!

Fresh installation of OS Yosemite from USB bootable disk and everything went very smoothly. Macs Fan Control showing <1400 rpm at 48 C....not sure if that is the correct temperature for a SSD though? (I've never used one before)
 
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