Hello! The MacBook works from the network but the battery does not work! It does not charge the battery! Replacing the battery did not change the situation. Please tell me what could be wrong
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Measure the voltage to ground of each pin on the battery connector on the logic board without the battery. Post each measurement. -
PPVBAT_AON_CONN=0,884
I2C_SMC_PWR_3V3_SCL=0,459
I2C_SMC_PWR_3V3_SDA=0,458
SYS_DETECT_L=0,489Comment
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the indicators are identical to the working boardComment
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If the MacBook works from the mains, then we can exclude the CD3217?Comment
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These are diode mode measurements but a good start. Not shorted.
Repeat the same test but in dc volts mode of the meter. Be sure that your battery pack(s) are compatible with this logic board. Post each measurement.Comment
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battery of the same model! and checked by another good payment of the same model! I suspect ISLComment
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Hello. Sorry for the long post, but I am trying to decide if this is a simple battery replacement, or potentially something more complicated.
I bought an open box MacBook Air M1 2020 A2337. Seller claimed it was never used. Visually, it appears pristine.
On arrival, the battery was completely flat. Computer powers up and boots fine. Battery status showing 1% and charging, 1 cycle. coconutBattery showing 0 mAh and ~6 watts.
After some hours, the battery status did not improve. Restore via DFU did not help.
I connected the power adapter to a Kill-a-Watt... -
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... -
Hi guys,
If I unplugged the battery and the charger, then plug the battery then the charger, it charges without problem.
Then if I unplug the charger and plug it back, it won't charge anymore.
In the first case, main voltage is regulated at ~12.5V and charges the battery.
After unplugging the charger, main voltage drops to battery voltage at ~11.5V.
After replugging the charger, main voltage stays at ~11.5V and won't go up to ~12.5V again.
I found C520A (2.2ยต after current sensor from USB-C source) completely burnt and removed it properly. I cleaned... -
Looking for some advice on a 820-02016 board as I don't have much experience with these M1 machines. Learning the nuances of them as I go.
So the history of this machine was it had been in a bag where a bottle of water leaked. Presented as dead about a month ago, corrosion was mainly around the battery connector and it's sub-PCB. Some corrosion was noted on the board around UC300, CC325, CW1C7, CW1C8. That was it really.
Now without battery connected, USB-C will stay at 5V and cycle between 0 and 120ma. PPBUS_AON is cycling between 0 to 12.3V. If battery is connected,... -
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...
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