obelix24
Badcaps Veteran
Last Activity: 04-22-2025, 11:01 PM
Joined: 06-18-2023
Location: Kosice
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resistance on PP5V_S2 is 108 ohms.Leave a comment:
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in diode mode
PPBUS_AON - 0.435
PPBUS_3V3S2_VIN - 0.436
PPBUS_5VS2_VIN - 0.435
PP3V3_AON - 0.718
PP3V8_AON - 0.340
PP5V_S2 - 0.130
PPDCIN_USBC_AON - 0.157
PPHV_INT1_AONSW - 0.157
PPHV_INT0_AONSW - 0.157
PPHV_INT5_AONSW - 0.157Leave a comment:
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I will meassure. As i mentioned before schematics and boardview files can be used from 13” macbook air m2Leave a comment:
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See attachments. In screenshots i left everything connected (trackpad, keyboard, battery) but even with everything disconnected (just bare board) it behaving same. Ampmeter is connected to genuine apple power adapter (96W)...
Last edited by obelix24; 04-15-2025, 07:34 AM.Leave a comment:
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ok that make sense.
Anyone any idea what can cause 5V 0.00A (sometimes it jumps to 0.01, 0.02, 0.03A) I tried thermal camera but this is not showing anything.Leave a comment:
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I know that this is not how it should be used 🤣 i'm just wondering if this is normal behavior. Because i gues the ampmeter should not light up when there is no power going dorectly into it. Does it not mean that there is short somewhere ? Or this is not the problem ?...Leave a comment:
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Ok i male mistake only one port is doing this strange thing
i've checked and one port was little water damaged. Cleaned it and it is doing the same. I tried another usb-c port from a2442 and it's doing exactly the same
...
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mon2[USER="295753"]mon2[/USER] do you have any idea what can cause this ? maybe it's the reason for 5v 0aLeave a comment:
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both ports. It's really strange as ports on these macbook are separate parts (it' not like on old macbooks where 2 ports were together)Leave a comment:
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i noticed one very strange issue.
When i connect USB-C port's (there are 2 ports) and there is power to one port the other port's getting output (it turn's ampmeter even if it's only bare ampmeter connected no cable connected to ampmeter)
I've compared if this is normal on another macbook (a2442) and if there is connected power and bare ampmeter it's not turning it on.
I've checked the port's and they looks ok.Leave a comment:
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I’m checking more and more.
there is still only 5v 0a on usb-c ampmeter
PPBUS_AON 12.29vLeave a comment:
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no it didn't help me. i was not able to find the problem.Leave a comment:
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I’ve checked all caps arround CD3217 and they’re all good. Also i’ve checked more caps on board and i’m not able to find any short.
tested usb-c port with usb-c mechanics tester and both ports looks ok.
any idea how to proceed or what can cause the problem 5v 0a ?
maybe faulty cd3217b13 ic ? Have someone tried to replace this chip with cd3217b12 is it still blocked ?Leave a comment:
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i'm really confused.
I tried to replace all 3 UR700, UR760 and UR730. UR760 have damaged pad on the IC.
But macbook is still behaving same only 5V 0.00a
i've checked all fuses around CD3217xxxxx chips and they're ok.
Also i've checked all big caps on board and they're ok.
I've tried multiple times with another macbook if it's not in DFU / recovery, but it's not.
One time but i don't know how and why when i've connected screen the screen turns on and goes over some weird test (white, green, blue, it looks like when in...Leave a comment:
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it looks like boardview can be used from this board : [B]820-03285[/B]
I've checked fuses around CD3217 chip in diode mode and they all looks good. (0.576 both sides)
I've checked PPBUS_AON on some caps and in diode mode i get only 0.085 this looks to me too low. If i try in resistance mode i get 85ohm on this caps. should it be so low ?
i've it's the same then i have 9ohm on PP3V8_AON and also on some others like PP3V8_ATC01_VDDIO_REGit looks like boardview can be used from this board : [B]820-03285[/B]
I've checked fuses around CD3217 chipLast edited by obelix24; 04-04-2025, 06:52 AM.Leave a comment:
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It's 0.00a i saw maybe one or two times 0.01-0.02a for approx second but i can't replicate this. I tried more times leave adapter connected, connect / reconnected. ... but still 0.00aLeave a comment:
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I don’t know where fuses on this board are i’ve checked the white ‘fuses’ near CD32XXXXX are and they’re all good. Have someone boardview file for this macbook ?
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Can someone point me where are fuses on this board ?...Leave a comment:
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