Re: Macbook Air A1237 Power Issues
i got a 120gb zif for macbook for 60€ shipped
i got a 120gb zif for macbook for 60€ shipped
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Re: Macbook Air A1237 Power Issues
it was a mechanical one, not ssd, but macbook boot very fast.
yes euro dropped so much... almost 1$= 1€ now..... damn that.... bga and all other things costs much more now.Comment
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Re: Macbook Air A1237 Power Issues
Hi everyone ,
My problem is that : The charger LED does not light up red and green.Macbook will starts only with the charger.I tried with the new battery but it is the same problem.When it is turned on , there is the message "no batteries available".I'm sure that battery is okey and my charger is original(new).I will try many solutions but still did not help me.Is there any "power supply" on motherboard which is responsible for this ? I mean transistor or something like that ? All in all my macbook is running only on the charger.
Thanks for any sugestionsComment
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Re: Macbook Air A1237 Power Issues
Sounds like somewhere along the charging circuit you have an issue. Is it the same model? Id just start at the beginning of the power input and measure from there. Did you look at the schematics? If you look at the beginning (where the battery connects) and start working your way through, you should find it. It could be the battery lines not creating PP3V42 which would not allow it to start without the adapter.
Hmm but the fact it starts up without the charger is suspect...it sounds like its not detecting the battery. So I would try looking at the one wire circuit. Thats usually something to do with no green light.. That or PP3V42
bestComment
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Re: Macbook Air A1237 Power Issues
hm , now there is not any lights and macbook did not start with the charger . I saw the diagram . I will replace inductor L7750 and ISL 6258 . Then I see what will be happen.Comment
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Re: Macbook Air A1237 Power Issues
change only 6258Comment
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Re: Macbook Air A1237 Power Issues
I changed but still did not turn on.Comment
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Re: Macbook Air A1237 Power Issues
still you have green light ?Comment
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Re: Macbook Air A1237 Power Issues
No , there is not any light . No orange and green lights.Comment
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Re: Macbook Air A1237 Power Issues
missing 3.42volt ?Comment
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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 -
Hello, i have a batch of 10 Macbook Pros A2179 bought from a Costco return wholesaler.
The 10 of them show the exact same behavior;
They auto power on, to internet recovery spinning globe, fans to 100%.
Power consumption on USB-C port is 0.43a, shuts down as soon as unplugged. Battery doesn't charge at all. However, it boots to 20V on the Ampmeter.
Based on their iBridge versions (4.x and 5.x) these were shelfed for a long time.
All of them power on the same way; 100% fans, shut down as soon as they are unplugged. Removing... -
Hi Masters.
My 1708 EMC3164 macbook have power issues. First it was working fine but a bit slow in booting. Net day i turned it on and it didn't powered on. And i tested with usb meter it suddenly @ 20v it takes 2.6 ampares and cpu gets hot. Then i checked the baord and PPBUS_G3H was short to ground. I injected 1v to it it takes 350ma and cpu gets warm. After opening L7410/20/30 there was inly L7420 line was short then i injected 3v to PPBUS_G3H and it takes 2.5 amps and U7420 got hot and i desolder it. Now after that in the start it takes 0.580 amps and goes to 620-30 mili amps.... -
Hello all,
Working on my wife's 13' Macbook air. It's been in a box since she upgraded but I figured it could be good practice.
Details:
Macbook 13' A1466
Board (820-3209-A)
Battery OEM 7.3v 50Wh 6700 mAh (020-7379-A)
Pictures below of Boardview and schematic...
I don't know how to test the voltage on a MacBook battery. I just assumed it had an enable pin but the best I could read was 300 something mV poking around the battery connector.
It's an older model and it is very likely that battery has become... -
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
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