I attempted adding an SDD to my iMac. It installed successfully but I got a hardware failure apparently with the ambient temperature sensor. It's only a month old and strangely, I didn't mess with that sensor other than unplugging it from the MB jack. What can I expect if I visit a Mac Expert ? I can replace the old hardware but of course they may still know I messed with the insides. It should still be under warranty. Is it worth going or should I investigate buying a new sensor ?