Re: Macbook A1707 short on PPBUS - nothing gets hot
Adding to the last list...what is the voltage for PP3V3_G3H ?
Adding to the last list...what is the voltage for PP3V3_G3H ?
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Re: Macbook A1707 short on PPBUS - nothing gets hot
Hi Mon, it is pin 1. Actually I was confused about the creation of that rail between U7650 and the U7800 PMIC. The PP5VS4 pad on the PMIC bottom row fifth from left side was corroded. I started scraping the corrosion and may have hit some ground. That's quite technical but do you think ground is the 1st layer and I can scape some more to create space around the via? PP5VS4 seems to be going everywhere from that pad so I can't just run a wire, need to figure out how to repair and connect to the pad.. I think if I can get through this hurdle there is hope for the remaining challenges.Attached FilesComment
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Re: Macbook A1707 short on PPBUS - nothing gets hot
Regarding PP3V3_G3H, can't check right now as waiting for new PMIC but I recall it was fine as the CD3215s were able to negotiate 20V at the charger.Comment
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Re: Macbook A1707 short on PPBUS - nothing gets hot
Hi Mon, as stated previously it's on pin 1 of L7600. Also I need to sort out the situation with pad 5 of the pmic. Do you have any advice? thanks again.Comment
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Hi guys I have a Macbook a1707 with motherboard 820-00281, without liquid damage that behaves strangely, with the battery connected the Macbook does not turn on and the USBC meter stops at 5v in loop, when I disconnect the battery the Macbook turns on and works fine, I have already tried to replace the battery twice without success, as soon as I connect the black cable of the battery the Macbook does not turn on, it stops at 5v and in loop. -
Hello there
I have problem with Macbook Pro 15" 2017, model 2017, MB code 820-00928.
I bought it as broken with some artefacts on the screen, first I thought that this is problem with ribbon cable but after inspectiing ribbon cable I know it is fine. I tried to reinstall macOs and then I figured out that this must be something with GPU as installation freezes at the end (when drivers are loaded). I installed Windows and was able to install every each of drivers except GPU driver, as soon as I tried to install GPU driver - black screen and restart.
...11-21-2024, 05:25 AM -
Hello everyone,
I'm currently diagnosing a MacBook Pro A1707 motherboard that does not power on. I've gathered some data but am stuck and need expert advice.
Note that i'm a beginner in electronics and i'm trying to learn while trying to repair this macbook that my work gave me. I'm really curious and love understanding how thing works and i already learned so much.
Only one usb c port is taking 20v and have 12.5v on PPBUS_G3H. when trying other ports, 2 are not going to 20v and one is going to 20v but the CD3215 is getting really hot.
Observations... -
Hello,
Namaste!
We have a Macbook A1707 which came in for repair. Someone had already tried to work on it and there were traces oh heat and burns on the board.
The charger was Stuck at 5v and the there was some caps shorted around U3100.
Turns out there was corrosion under U3100. Same was Reflowed and the Macbook turned on. Works fine but having 1 issue whenever the Macbook is idle and goes into sleep mode. It will WAKE for 1 Second and then do a restart.
It will Display a Black Screen with error message saying Macbook Restarted because of a problem.... -
Macbook A1707 - Guys, please help newbie confirm if chip on picture is a bios one?
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