I recently had an issue with my LCD panel and I thought it may have been the LVDS cable but it ended up being the panel itself that is faulty.
I have taken the iMac into an Apple Store where they ran some hardware tests - turns out the LCD Proximity Sensor has failed and the internal fan is running at a higher speed.
Is the LCD proximity sensor on the logic board or is it part of the LCD panel?
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The LCD Proximity sensor is the small 4 wire cable going from the LCD to the Logic Board seen here https://d3nevzfk7ii3be.cloudfront.net/ig... It routes behind some tape located on the back of the LCD to a small PCB that is adhered. If you want to replace it http://www.powerbookmedic.com/Intel-iMac... (Careful their returning through them isn't the greatest experience)
Please remember to adhere to all safety and ESD precautions.
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so if I am to purchase another LCD panel the proximity sensor is part of cable/board on the LCD itself and not the small input connector on the logic board?
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It is a stand alone sensor that connects to the logic board via a cable, so it could easily be replaced. It is adhered to the back of the LCD. You can remove it easily if needed. :)
thanks for your replies Shmajay - appreciate you taking the time to explain
I seem to have the same issue, it’s been extremely slow after I replaced my screen for an iMac 27’’ Late 2015. I have the “Macs Fan Control” app installed, and I’ve noticed that I have a temperature sensor called “LCD Proximity 2” only. Is there supposed to be a “LCD Proximity 1”, and can this be the problem? Is it easy to fix?
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