4SNS/1/40000000:TH00-9.000
kernel_task with 500% CPU. Fan is full speed once I switch on my imac27. The air is always cold as my iMac .
it happened after I changed my Lcd screen. (I tried to save some money 😟)
did I put some dust somewhere, did I broke a temperature cell, broke my graphic card, mother card??
I tried many, many, many tests and solutions I checked on Internet ( nvram, Smc, removed some files plist) without any results .
"hardware Apple test" show me this messsage error: 4sns......
thanks for your help For a solution cheaper than an official Apple repairing
iMac (27-inch, Late 2012), iOS 9.2