Stage Light Effect iMac 27 inch
I have seen a lot of posts regarding the stage light effect on the MacBooks, but I have a 27 inch iMac that had the same issue for about 2 weeks. It was sporadic, as sometimes it would be there and others not. Today the screen is totally black. Is the stage light effect indicitive of what the cause of the display going black might be?
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Can yo give us your exact model as the different series use different parts.
On the bottom of your stand you'll find the S/N, plug it into here EveryMac - Lookup let us know what you find.
par Dan
Thanks Dan,
I will look into replacing the LED Logic Board, seems like a simple procedure if I can locate the right board.
My iMac is:
A 1312 ( 2.7 GHz - i5 )....
Everything that I could find about the stage light effect was related to the powerbooks - nothing for the iMac. Weird??
par Doctor Grafix
Is this it? 27" iMac Core 2.7 GHz i5 (Mid-2011)
par Dan
Yes, that’s it.
I have another question maybe you can answer... I about to buy a new iMac (the 2011 model is getting pretty tired and I bought it used and cheap anyhow).
But in order to transfer my files I need to be able to see the old iMac to set up Migration Assistant. I have an HD monitor ( TV ) that I can use. The port on the iMac is a Thunderbolt - but all I can find is a USB-C to HDMI adapter (the USB-C is the same size as the Thunderbolt port)
Do you think this will work in order to use the TV as a monitor temporarily?
par Doctor Grafix
The USB-C (Thunderbolt3) is not compatible! The connector is still different than what your iMac has. You need either a miniDisplayPort or a Thunderbolt 1 or 2 adapter.
Here's one source of the needed adapter Mini DisplayPort-to-HDMI Adapter
An alternative way is not using any display! Instead re-start your system in Target Disk Mode by restarting the system and pressing the T key on your keyboard.
Reference: Mac startup key combinations
Don’t forget to score the answer and accept it.
par Dan
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