Using iMac 5k Late 2015 without screen attached

[crystalidea]

Hello, has anone tried this yet? Thanks.

 

[crystalidea]

After some research it seems that fan will run full speed with CPU & GPU throttling

How to disable/trick/bypass the LCD temperature sensor..? - iMac Intel 27" Retina 5k Display

I have disconnected internal 5k display and have connected that to a circuit board allowing for external inputs (I can now use the 5k screen as external monitor with my new laptop) I would still like to be able to use iMac as a computer - it will boot with external screen (even its own...

www.ifixit.com

5K iMac: Creating an external display with a server inside

With the resolution of the 5k iMac saga, I was left with a beautiful iMac15,1 sitting on my desk. Throughout my testings with the machine, I would use AirPlay to Mac as a substitute for a proper external display. However, due to limitations with macOS, this was not ideal:

khronokernel.github.io

https://forums.macrumors.com/threads/2014-5k-imac-temp-sensors-issues.2354997/

CPU throttling can be fixed with a kernel extension, fan speed with Macs Fan Control, no fix for GPU though, overall - uncool scenario.

I wish there was some simple workaround (like 2 pin short-circuiting)...

 

[azentropy]

Had a similar issue with the 21.5" 2015 iMac 4K. Broke screen but still wanted to use it attached to a monitor. It worked and was able to adjust the fan speed so it wouldn't run full blast, but it was severely throttled to the point it was unusable. I gave up.

 

[Fravin]

Do you still have the screen? You should rip the sensor out of it and keep it plugged.

 

[crystalidea]

Well, I could but going to be make a 5k monitor with it.
Had plans on using imac internals on a wood board as a screenless iMac. Two devices out of one 😃

CPU throtting issue can be fixed with this

 

[Fravin]

The sensor is just a thin strap of metal with wires. It is taped on the back of your screen, just remove the tape and apply it back. It won't take too much space.

 

[crystalidea]

it's for older models, iMac 5k 2015 doesn't have this

 

[Fravin]

it's for older models, iMac 5k 2015 doesn't have this

The pictured one is do an 2017 iMac.

The older ones were visible on the back. These are now hidden under some tape.

 

[crystalidea]

Ok but how to connect it to the 60 pin socket? (the screen is connected to the MB using 60-pin lvds data cable and power cable, link). Search for these 2 pins with a multimeter?...

 

[Fravin]

It's connect to the display, not on the socket

 

[crystalidea]

There's no display (see the title)