Just checked again the bottom usb c port power in with f7000 removed - one side DC voltage is 0.005V and the other side is 12.30V
top port with f7000 removed power in in DC one side is 0.005 and other side is 1.420V...
pantsos
Member
Last Activity: 01-10-2025, 10:53 AM
Joined: 02-11-2021
Location: Montreal
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Bottom usb c ports when I connect power measuring in DC with F7000 on the board.Leave a comment:
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Power is off. Multimeter in resistance mode with the F7000 removed. One side I get 3.9 MΩ. Other side I get 16.40 MΩ.
Power on with the fuse still removed DC voltage one side 0.100V stable - other side 0.316V stable...Leave a comment:
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1)Yes it's the original 61W that comes with the laptop.
2) The USB meter is stable at 5V and I see 0.15A and when I check voltage on F7000 the voltage starts at 2.9V and then slowly goes down.
The bottom port I see again 5V and then power cycles 0.00A and then 0.45 then 0.35A then back to 0.00
For these measurements I use DC on my multimeter black probe to ground and red probe on F7000 on both sidesLeave a comment:
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This board has 4 usb c ports. Each side, the top ones starting from 3V and then slowly goes down to 0.3V.
the bottom ones is not stable. It plays from 8-10V all the way down and then up again in 1-2 seconds.
type c meter is the SATECHI.
The way I test it is the board is completely out and only connect the usb c port while plugged with the usb c meter and then the original charging adaptorLeave a comment:
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I guess my issue is not that simple?Leave a comment:
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The board is out. Plugged in with the charger only, pin 2 and pin 3 have the same behavior.
rapid changes in number that I can not even read, but every 2-3 seconds I see 0.000 and then playing and mostly i think there is a short somewhere.
USB C meter shows 5V and amps starting 0.19A goes to 0.49A and then hangs at 0.19 and then goes to 0.50A
if I plug it in the second plug USB C port, 0.00 I see 0.31 and then again 0.00. I...Leave a comment:
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Thank you for getting back to me.
You are correct the model is 820-00850.
after the keyboard replace whoever replaced it said that it would be possible to turn it on, but didn't charge.
me I never saw the MacBook turning on.
Yes I do have usb c meter tester.
i think on the downside of the usb c port have different behavior that the top ones.
Measuring the battery in diode mode connector it seems that everything is good.
j6951
Pins:
1)0,5
2) 0.8
3)0.8
4) OL
5) GND
6) OL...Leave a comment:
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820-0085-a no power/ no charge
Hey there,
I have a MacBook 820-0085-a that was working perfectly, after keyboard replacement the MacBook would not charge any more. As we speak the battery might be completely dead. I think that this MacBook need a battery to boot up.
I have a very limited experience with newer MacBooks. If anyone would suggest where to start taking measurements or testing, I would appreciate it.
All I know is that the MacBook was working perfect before the keyboard switch.
A tech confirmed that he used a universal charger.
Thank you -
Re: MacBook Pro 13" 2017 A1708 Black screen issue (not flexgate)
It seems like a have the exact same issue. Can you try to close the lid and open again, image comes on or it stays off?
I’m my case when image goes off I close the lid and re open and it works for a few seconds and then again goes off.Leave a comment:
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Re: Macbook Pro A1708 (820-00840-a) Weird problem
Don't think backlight is the issue. Backlight stays on, just the image goes off....Leave a comment:
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Macbook Pro A1708 (820-00840-a) Weird problem
Hey guys, i have a weird one, 820-00840 board no water damage, macbook is very clean.
The issue is the when i use the macbook (use the touch pad or typing after 10-30 seconds i have weird graphic glitch at the bottom of the screen,(similar of that white line of the touch IC issue on the iphone 6 Plus) and after that the screen goes black (backlight is still present). When i close the lid and i re open it, image comes back always.
If i don't touch or use it, it works perfect.
So i am guessing when there is action there is an issue with something and causes the image to...Last edited by pantsos; 06-11-2021, 09:56 AM. -
Re: New Members - please post your introductions here
Hey everybody. New in this forum, trying to share and learn more about electronic repairs.Leave a comment:
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