I recently decided to to swop out the optical drive on my 27" iMac and replace it with an SSD following iFixits guide. I managed to do it and was very happy with the results. It all went wrong though when I decided to temporarily reinstall the optical drive as I was having trouble installing Windows from an external drive. Instead of disconnecting the display data cable I left it attached. Unfortunately I was a bit too careless and I lifted the display up too far and heard the sickening sounds of something breaking. I had partly pulled the data display connector away from the logic board breaking the connection. I felt sick to my stomach as I knew this was potentially a VERY expensive mistake. Unfortunately I'm in South Africa and the quality of repairs available leaves much to be desired. I've taken it to 3 separate repairmen who repaired the connection between the display and the logic board but so far none have been able to bring the display back to life. All have said that I need to replace the logic board. As its such a new computer the replacement quote is more than I paid for the entire iMac originally! However I'm not convinced that a replacement logic board is not necessary. I am currently using the iMac connected up to an external display and it works perfectly. If the logic board was irrepairably damaged surely the output to an external display wouldnt work either? Which makes me think that it must still be the connection between the display and logic board which is damaged. Am I correct in my assumptions or is my only option to replace the logic board?