Gentle nudge pls
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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. -
My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
brought in a working MacBook for battery replacement (swelled up). After replacing the battery it stopped turning on. tried connecting the old battery without changes. consumption with the battery connected and without the battery is the same 5v\0.200a on all 4 ports. replacing 9239 did not help
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Hi, I was given this laptop by my uncle who said:- It would occasionally shutdown if not plugged in
- battery had been replaced
- touchbar would "strobe"
After fully charging the battery, with bluetooth disabled, no LAN cable and only wifi enabled, the laptop stayed on (screen on) for about 6-8 hours. Allowing screen to turn off while not in use, and it went for over a day.
BUT
When powered off, it would at some point have a... -
Hi fellow repair gurus,
Liquid damaged A1707 was stuck on 5V. I replaced corroded CD3215 and SMC now successfully raises voltage to 20v.
The fans spin, the screen comes on and displays a "low battery" sign before the machine shuts down.
After that the screen and fan stays off but PPBUS_G3H continue to toggle every 4-5 secs between
- 11.4v (and 170mA current draw on usb-c power meter)
- 12.6v (zero current draw)
The toggeling occurs when battery is connected but regardless if external usb-c is connected or not. It seems...
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