iMac not shutting down when on UPS power

Sounds like they don't have a lot of Mac customers, or at least don't do a lot of support for them.

That would make sense, since most Mac users with consumer APC systems aren't using APC's software.

Keep after them. They do have a pretty good reputation, and the only problem I've had was handled quite well: the phone line protector somehow failed after a lightning storm, apparently shorted out. If I connected to it, there was a very loud buzz. I asked if there was any way to repair it, and a couple of days later they sent a whole new unit. They said they'd also send a return shipping label, but never did, so I'm still using the old one for my cable modem, Airport Extreme and HD connected to it!

Keep us posted.

Cool. (I hope there's a new cable as well).

Keep us posted.

DHuitema wrote:
Pondini:

The new UPS & cable arrived, but neither fixed it, so I called Apple.

"Chad" suggested erasing the HD when reloading the OS (which I hadn't done when I reloaded it the last time!). I did, and then I tested the UPS before I restored anything else, using just the "brand new OS". It worked for the first time, complete with warning message and shutdown at the prescribed one minute interval!

That's bizarre!

But glad it's fixed, whatever/however it was.

Now I have another problem with my attempts to restore the rest of the software from Time Machine which I'll explain in a new thread.

Your best bet will be to use +Migration Assistant.+ Be sure the account you set up after reloading from scratch is different from any on your backups. If it isn't, create a new, temporary Admin account, and log on with it.

See: Using Migration Assistant.
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Edit: I should add that if you have complex 3rd-party apps, that came with their own installers, they likely put other things in other places, often in your system folders, besides the app in Applications. Unless you know what and where those other files are, and restore them, too, the app probably won't work properly, if at all. Those apps must be reinstalled from the original discs or re-downloaded and the installer run.

Message was edited by: Pondini

Aha! I'd been trying to figure out what was wrong, since you'd changed the preferences file and reloaded OSX.

I hate it when something gets fixed and I don't know why.

Thanks for posting back.

HI Dick,

I just finished reading your entire discussion with keen interest because I just purchased an APC UPS ES550 and am experiencing exactly the same problem.

My topic - APC UPS-ES550 Question - has generated several similar suggestions from many of the same individuals. I have tried all of the suggestions to no avail and have been in contact with APC. At this point they are sending me a new USB cable which I don't expect to solve the problem because I have already tried another cable, but they obviously have a step by step approach they need to take.

If I understand correctly you solved your problem with the new UPS and erasing your HD and reinstalling OS X and you also found that the original UPS was in fact bad....correct?

Rather than wait on APC to replace the UPS, I think I will return it to Staples for an exchange since I am still within my 14 day return window.

If you have any suggestions please pass them along.

Thanks.

Bob

Bob DERR wrote:
. . .
If I understand correctly you solved your problem with the new UPS and erasing your HD and reinstalling OS X

Just a correction: it's not necessary to erase your HD to reinstall OSX. Snow Leopard doesn't have different Install options, like previous versions of OSX: it just replaces the current installation of OSX with a new one, without disturbing anything else.