Power cutting out while in sleep and sometimes while in use
Mac Pro mid-2012
This machine has been cutting out periodically for about a year.
There are two problem areas. Firstly it cuts out when put to sleep. Secondly it cuts out randomly, perhaps after several weeks untroubled usage. It's very unpredictable in this respect. To get round the first problem I changed the energy save settings to let the screen sleep but not the computer [moving the pointer to 'never']. Obviously this doesn't solve the random cut-outs.
Apple had it for two weeks. They found nothing and suggested a software problem. I think that's wrong. It's baffling and resetting the PRAM/SMC hasn't worked [I did this myself and am certain Apple techs did the same as the first order of business] but since reading the advice dispensed to iMac owners with similar problems I now suspect something more serious.
iMacs are not Mac Pros but is the weakness likely to be the same [logic board/power supply]? I'm guessing things will get worse over time so naturally I'm quite anxious to solve the problem. It's unfortunate I'm very much a non 'techie' type, and that these things are often too complicated to simplify for people like me, but with things as they are I'd just be terribly grateful for some advice. Thank you.
Is this a good question?