- #HOW TO TEST A1347 MAC MINI POWER SUPPLY INSTALL#
- #HOW TO TEST A1347 MAC MINI POWER SUPPLY FULL#
- #HOW TO TEST A1347 MAC MINI POWER SUPPLY SOFTWARE#
What doesn't entirely make sense is the lack of the power light, though in fact that may relate to the same SMC error since it too is controlled by the system management controller. Thus if there were an error state in the system management controller, the symptoms you describe are entirely possible - hence the suggestion to perform an SMC reset, since that would clear an error state unless there were a hardware fault.
#HOW TO TEST A1347 MAC MINI POWER SUPPLY FULL#
The fan on an Intel mini is designed to run at full speed in the event of an failure of the fan control line. The reaction to power down is, as you say, a quite natural one in the face of the unexpected, and at least fortunately you have the benefit of a power switch at the wall, which is less likely to incur a voltage spike, than we do here, whereas here all we can do is pull the plug - which is rarely a good thing! If not, I'll have to use the AppleCare package that I bought with the system. To be honest, I've had plenty of kit throw the occasional glitch over the years and I hope that that's all that this was. If it happens again (and by your post it seems that it might) then I'll let the Mini boot as normal then promptly shut it down again. I can't possibly see how that could have a bearing here. The only recent change to the system was that I installed VMWare Fusion on Wednesday evening, the last time that I used the box. I've done nothing out of the ordinary that I can think of that might have contributed to this. I've carried out the checks that you suggested and the hard drive seems fine. I've never heard the Mini's fan run that hard before. However, the loud fan noise took me totally by surprise and I suppose the normal reaction to any appliance doing something really abnormal is to power it off at the wall just in case you can prevent damage. With hindsight powering-off the computer during a boot wasn't the smartest thing to do (and I've worked in the IT industry for > 27 years, so I should know better!). Press the power button on the back to start up your computer.Īndy - thanks for the welcome and the prompt reply. Then reconnect your keyboard and mouse to the computer. Plug the power cord back in, making sure the power button is not being pressed at the time. Unplug all cables from the computer, including the power cord and any display cables. From the Apple menu, choose Shut Down (or if the computer is not responding, hold the power button until it turns off).
#HOW TO TEST A1347 MAC MINI POWER SUPPLY INSTALL#
Errors in the permissions will be repaired, though any in the process of verifying the disk would indicate the drive needs a repair which can be tried by booting the system to the original install disk (holding the C key down during startup) and running Disk Utility from there, this time clicking 'repair disk'. To check the drive, run Disk Utility (in Applications>Utilities), then select the internal drive and firstly, click 'repair permissions', then once done, click 'verify disk'.
#HOW TO TEST A1347 MAC MINI POWER SUPPLY SOFTWARE#
If you get any other similar events, post back, with as much detail as possible, including any odd behavior you may have experienced in the previous use, and what software you've installed. I would suggest that since you switched power off at the wall before rebooting, it would be wise to check you didn't inadvertently damage the drive's data structure or directories - not likely, but possible if the drive was attempting to write at the time, and then do an SMC reset. An SMC reset was done and it has not happened again - though it may be purely coincidental that it hasn't happened again. I don't think there's been a clear reason found for this happening, and there is certainly not one from your description of this specific incident, but among the users I have who run Intel minis, I have had one where a boot failure occurred - the power light failed to light, though the chime was present and the system commenced startup then kernel panicked. The experience you've had with your mini isn't a common one, but it has been reported from time to time, so it's not unheard of.
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