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Jan 27, 2015 6:07 AM in response to stedman1by mrf_csspr,Thanks for the advice, but unit runs all the time on high speed including on booting an external system and fails to boot on asd 3S108 diagnostic. Only on AST/MRI gives me that error. It could be a bad CPU or MLB?
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Jan 27, 2015 6:37 AM in response to mrf_cssprby stedman1,Check the article below for instructions to reset the SMC and PRAM.
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
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Jan 27, 2015 6:52 AM in response to mrf_cssprby lllaass,3S108 could mean a sensor problem
http://www.macissues.com/2014/03/21/how-to-run-and-interpret-apples-hardware-tes ts-on-your-mac/