Chosen Solution
Hi Please Dan I need your help what I should do ! I did contact my Imac 27 mid 2011 Via TV , but the Fan with Full speed loudly show up . I coudn’t use the LCD as you see the problem on the photo , molex connector i’m fine to use TV as monitor but the problem of full speed fan is really loudly also is it ok to run my Imac with this issue until I find solution . Here some photo : Logicboard molex problem !
Check all the temp sensors, like the HDD sensor. Iff they are not connected or faulty, your iMac will run the fans at maximum.
