This notebook does not store the date and time when the power supply is disconnected, the battery is ok, serves extract schema date and time.
thanks to all
thanks to all
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Re: Macbook a 1181does not store the date and time
internal mainboard battery is ok ? the 3volt battery...
ps: ciauz -
Re: Macbook a 1181does not store the date and time
even if internal cmos bat was dead , if main battery have power it shouldn't lost time and hour . try reseting SMCComment
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Re: Macbook a 1181does not store the date and time
this notebook has no internal battery, memory, time and date is taken from the battery of the notebook, I tried to do a reset smc but to no avail, I have the wiring diagram of this notebook but I can not figure out which is the integrated date and time .
thanks to allComment
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Re: Macbook a 1181does not store the date and time
are you sure ?
https://www.ifixit.com/Guide/MacBook...eplacement/297Comment
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Re: Macbook a 1181does not store the date and time
you are sure, however, I thank you for everything corrected, track interrupted due to water infiltration.
thanks to allComment
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I have a cheap action camera with an annoying trait, every time I change batteries the date & time gets reset and I have to set it again.
To solve this problem I want to add a small internal battery inside it which will keep supplying power to the camera for a while while I change batteries so the date & time is retained.
I have opened the camera and I think there is enough room to add something inside to accomplish this:
The camera is powered by a 3.7V nominal single cell lithium ion battery.
So I need to connect another battery in... -
Hi everyone!
I have a 2018 MacBook Pro (with Sequoia OS) that I've been using for years with no problem. I recently received an M2 MacBook Pro so I'm mostly using it and not the 2018 one, but since a friend of mine needs a computer, I thought I could restore my 2018 and give it brand-new-like to my friend.
I tried using the built-in tool to restore the MacBook (Settings > General > Transfer or restore > Delete) but it got stuck when trying to remove the Find Device configuration (it asked me for the password for my old Apple ID -now I use the same account but...06-27-2025, 08:54 AM -
Hello,
I have a small Sophos XG86w firewall here, which is still working so far. But there is a problem with the BIOS and the DMI environment variables.
The hardware forgets the date and time after a reboot or a power failure.
The DMI environment variables are also reset to default values.
I have now tried 2 different batteries (CR2032).
I reset the DMI vars via an EFI shell and with AMIDEEFI64 (v5.21.0057).
However, after a reboot or a power cycle, these values are reset again.
It is an Apollo Lake platform with an Intel...10-08-2024, 04:19 AM -
I have a 2020 Macbook Pro A2289 and after many attempts managed to get it into DFU mode, using my older 2017 A1706 Macbook Pro (Running Ventura 13.7.8). However, when attempting 'Restore', it fails at step 4 of 4, showing the following error:
- "The operation couldn’t be completed. (AMRestoreErrorDomain error -1 - Failed to handle message type StatusMsg (Generic error)) [AMRestoreErrorDomain – 0xA (10)]
- "The system cannot be restored on this device. Failed to create new state machine for restore [com.apple.MobileDevice.MobileRestore - 0xFB1 (4017)]
...08-30-2025, 10:27 AM -
I am looking at an A2337 and found this for the order of power rails and what they do. Can this be confirmed before I dive into hunting down power rails that do not exist or are not neccisary?
- PPBUS_G3H (12.6V-12.8V)
- This is the main power rail that supplies power to the entire system. Check this rail first, as it must be present for other power rails to work.
- PP3V42_G3H (3.42V)
- This power rail is derived from PPBUS_G3H and is used to power the SMC (System Management Controller) and other essential circuits. It should be present if PPBUS_G3H is working correctly.
- PPVRTC_G3H (3.3V)
- This
- PPBUS_G3H (12.6V-12.8V)
Comment