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Hi all!
A friend of mine gave me a broken imac 24". I would like to recycle the power supply for another project, however i don't know the pinout, well i could easily find the Vcc with voltmeter. I just need to know which pin will switch on the unit, and if it's a "connect to Vcc" or "connect to ground" system.
Here some more
ref. SADP-220AF (A1200)
24v@4A and 12V@10,3A
A few pics
Cheers!
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Quick feedback on my tests during the last couple of days
iMac OFF
iMac ON
PIN-1 & 5 => O volt
PIN-2 => 3,3 volts
PIN-4 => unknown
PIN-6 & 7 => 12 volts
PIN-8 => 24 volts
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Hi, can I use this PSU with M.NT68676.2 and LM240WU2-SLA1 to make external monitor? if yes then how?
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This image is of M.NT68676.2A and I have M.NT68676.2, but both looks same.
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M.NT68676.2 Inverter Connection Pins
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My screen LM240WU2-SLA1's Connection Pins
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I want to use Mac's power supply instead of shown in below image:
Can I use it?
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as long as you power the LCD controller with the right voltage/amperage, you can use any PSU you like,
i personaly use the same setup and it works well :)
I am trying to do the same thing.
I connected my existing power supply, but cannot seem to get the display to function.
There is an output voltage jumper on the LCD control board. Do you leave it at 3.3V, or set it to 5V or 12V?
thanks.
Yes, you can use the original iMac power supply. I have done this. But with some hassles. You really have a new question here, but the longer answer is to order the board with the correct firmware and cable set for your panel. Then connect the cables as follows: iMac pin 4 to four black wires going to inverter. iMac pin 8 to four red wires going to inverter. iMac pins 1 and 5 soldered to the two black wires going to the controller, and iMac pins 6 and 7 soldered to the red wires going to the controller.
The hassle was that I never got the LM240WU2(SL)(A1) panel to work properly. It worked for 1 second, and then washed out into a barely visible white picture. I also have a iMac A1225 with the LM240WU2(SL)(B4) panel, and in desperation I tried that panel. It worked just fine, and the original (SL)(A1) worked just fine in the A1225, so I swapped them. The newer panel looks better anyway.
Hi, I have a few questions regarding this topic.
I am going to try and “rescue” the LCD display from my 24-inch white iMac A1200 after the motherboard failed.
The LCD display is from LG.PHILIPS with model Nr.: LM240WU2 (SL)(A1). Inverter board already part of screen.
I have ordered a controller board from China specifically for this purpose, with HDMI, DVI-D and VGA connections, which hopefully will allow me to use it as an external display. I think it is the same as the M.NT68676.2 you show in the post above. I presume they will supply me with all the necessary connectors for the screen - they said they would after I gave them all the information.
Question 1:
I would like to use my existing iMac power supply, and my understanding is to take the +12Vwires coming from pins 6 or 7 (or both?) of its connector, however what is the ground wire that I should take? Is this one of the “0V” wires from pin 1 or 5 (or both?).
Qustion 2:
The inverter board already on the display should reveive +24V, however I was told by the person in China who is providing the controller to simply connect a +12V DC power supply (3 or 4 Amps) to the controller. Will the 3rd party controller board convert to 24V for subsequent delivery of power to the inverter on the screen?
Question 3:
The 12V output from the iMac power sullpy is more than 4A i think (more like 20A if i remember well). Does this matter?
Thanks a lot for any feedback!
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Hi Gary,
Did this work for you? I am thinking of doing the same but I am not sure if my LCD is still good. I get LEDs 1,2 and 3 ON on the motherboard of my A1200 iMac.
Thanks.
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Answer 1:
You need just one +12V pin and one 0V or Ground pin that’s it.
Answer 2:
I think you need to use the power supply of the Mac to hook up the inverter.
Answer 3:
As long as the voltages match up and the amperage is equal or greater you are good to go. For example, if you need 12V 2A then you need to supply 12V and at least 2A, you could use 12V 4A if you wanted and it will still work.
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I managed to get it working on the first try with a late 2006 24-inch imac and a newer controller board that supports display port. Thanks to those who paved the way, using the original power supply.
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