Restarting the mac and pay attention to whether you can hear. If you find your lights flicker (LED lights more so) you really need a backfill UPS, We were burning out power supplies until we went with UPS's for our desktop systems. Usually, Apple products arent very user friendly in terms of repair ability and upgradability. Even after checking out the AC power wiring we're still not done! You need to get a good surge suppressor or better yet get a good UPS unit. Make sure the outlet is properly grounded (three prong) and the breaker panel is likewise properly grounded and the grounding point is likewise in good shape. Make sure you have a dedicated outlet (or one that is only supporting lights in addition). Check for a sleep indicator light, if applicable, and make sure that your Mac isn.
To wake from safe sleep, press the power button. If you're using an external display, your display might be turned off.
I would strongly recommend you get a qualified electrician to check your house wiring. If it doesn't seem to wake at all, check for these possibilities: Your screen brightness might be turned down. The cost will be lower than what you'll end up paying trying just to get the parts. I would recommend taking your system into an Apple Store and letting them deal with this. Either the power supply or the logic board or both could have a problem! Often when I see this type of issue the system had encountered a power surge either from the power line or a lightning storm.
0 kommentar(er)
