Original post by: originalmachead ,
Drying in rice was a good start... it helps but doesn't "fix" anything. You also followed up with cleaning... hope you used 90% or better alcohol as drying agent... less % contains too much water. You can try an SMC reset.. you may have corrupt NVRAM or SMC data. '''Try a safe boot''' and see if that changes anything... (many fonts and extensions (apple speak for drivers) are not loaded in a Safe Boot. You may have a damaged CPU or a damaged Sensor. Without running Apple Diagnostics can't say for certain. See this thread and others at [https://discussions.apple.com/thread/6055884?searchText=Kernel%20task%20at%20400%|Apple Discussions.] ''If this answer is acceptable '''please remember to return and mark it'''.''