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It didn't used to do this before the logic board's SMC button was likely pressed on accident way too many times. The CMOS I have in there measured at 3V using my multimeter, but I am going to buy another new one with a "guaranteed good by" date, such as a Duracell, if possible.

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So I thought well maybe I didn't get the positive and negative wires back together correctly. So I tried reversing the polarity cutting and splicing each wire over to the opposite wire but it hasn't helped. Previous to this I have owned only desktops, and they are easy to get in there and fix if something goes wrong. That is the reason for this hack--to make my Mac Mini easier to access and work on.

In the future obviously I will only buy Mac Pro towers. XD ha ha. Mar 22, 5: Thanks for the reply, BDAqua. I don't think I have Restart Automatically selected, but I will check.


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I'll post if that fixes it, but I think I probably don't have that selected. After turning the power strip back on, it started itself up again, and as before, the correct date and time are gone. Since at least a few threads on here say you shouldn't hit the logic board's SMC button more than once successively it can damage the SMC chip , I am worried SMC damage is what is causing the CMOS's inability to hold the date and time when the power strip is turned off. If that is the case, I am wondering if a re-flash of the SMC firmware could fix the damage I caused by inadvertently hitting this button so many times.

I worry about that also, but haven't heard anything about SMC firmware resore working or not, or if it's even possible to do. So the only way to reflash the SMC firmware would be if I could get a copy of the original SMC firmware installer, which I haven't seen around anywhere. There are CD images for download on Apple's website that you can use to restore firmware, but AFAIK they are only for if a firmware update failed to complete or else got interrupted by a power loss.

And they don't let you go back to an earlier version of firmware than what is already installed.


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    5. Anyway, thanks for trying to help, BDAqua. Communities Contact Support. Sign in. Browse Search. Ask a question. User profile for user: Bill3Smith Bill3Smith. Don't bend the metal finger too much or it will break off, requiring a new logic board.

    Mac mini Model A1176 Logic Board Replacement

    When inserting the new battery, make sure the side with writing along the edges faces the black plastic holder. You should also ensure that the metal connectors make contact with the battery you can bend them forward if they do not. Simultaneously pull the tabs on each side of the RAM chip away from the center of the chip. These tabs lock the chip in place and releasing them will cause the chip to "pop" up. If there are two RAM chips installed, repeat the above procedure for the second chip.

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    Use the flat end of a spudger to pry the AirPort antenna cable connector up off the AirPort card. After removing this screw, the free end of the AirPort card should pop up slightly. I did not complete this guide. Select a Language: Help Translate iFixit. Walter Galan and 7 other contributors. Difficulty Moderate. Steps Time Required 30 minutes - 2 hours. Sections 4. Flags 0. Introduction This guide will show you how to replace the logic board. Tools Buy these tools. Step 1 Top Housing. One comment. Add Comment. Step 2. Add a comment. Step 3. Step 4. Step 5. Step 6. Step 7 Internal Frame.

    Step 8. Step 9. Step Step 16 Logic Board. Step 21 Logic Board.

    Almost done! To reassemble your device, follow these instructions in reverse order. You're Finished! Author with 7 other contributors. Walter Galan , Reputation 1, Guides authored. Single Step Full Guide. Small - px Medium - px Large - px.