Chosen Solution
Hi, I got a iMac A1220 2210 model from my friend, who had this PC unused for a long time… I was trying to make it work, but i cant understand where the problem is… When I power on my iMac, the first 3 of 4 LED is ON except the LED#4. I thought that there must be problem with the LCD. Then, I tried through the external display also, but no signal on external monitor too… Please help me to fix this….
Pull the GPU and do a hot air reflow of the chip. I’ve had a 70% success rate with this fix on this model. Here’s how to get it out: iMac Intel 20" EMC 2133 and 2210 Video Card Replacement
