Today I just went to fix my old iMac mid 2011. According to the repair man , he checked and is my power supply spoilt and . he replace it , is working now . He also told me power button also faulty , aka means intermittance. That problem I know. Due to urgent need the iMac , so I never get repair the power button , only the power supply. so my question is , if you left your iMac 24/7 365 never turn off , only turn off the display when go to sleep just left it on listen online radio , will make the power supply get faulty faster?