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A2289 - 820-01987 5V
- Thread starter mushr00m
- Start date
Microphone can cause the short on 1V8_G3S.
But considering that I only have the screen and fan connected, and the board itself matches the diode mode readings as shown in Openboarddata, why would the microphone be causing an issue?
I understand that if the microphone were connected to the board, it could potentially cause a short. However, since it's not connected and the board still isn't receiving voltage, what are your thoughts on this?
Additionally, could you provide more comprehensive explanations? I've been working on this board for nearly a month now, and it's been extremely costly both in terms of money and time, yet I still haven't resolved the issue.
I understand that if the microphone were connected to the board, it could potentially cause a short. However, since it's not connected and the board still isn't receiving voltage, what are your thoughts on this?
Additionally, could you provide more comprehensive explanations? I've been working on this board for nearly a month now, and it's been extremely costly both in terms of money and time, yet I still haven't resolved the issue.
If 1V8G3S_EN is present (and no output short), then 1V8_G3S must come on.
If not, bad U8220 (or its solders).
If not, bad U8220 (or its solders).
Replaced U8220 and now we do have 1V8_G3S
Just put the board in the case again only screen and fan connected
Now we have a different behavior
20.37V on the amp meter and we do not have fan spinning any more when pluggin the charger.
It doesn't happen nothing
Still we do have 1V8_G3S
What now?
Just put the board in the case again only screen and fan connected
Now we have a different behavior
20.37V on the amp meter and we do not have fan spinning any more when pluggin the charger.
It doesn't happen nothing
Still we do have 1V8_G3S
What now?
Wit this behavior, machine should enter DFU.
Disconnect Touch ID and use another switch for PMU_ONOFF_L.
Disconnect Touch ID and use another switch for PMU_ONOFF_L.
Did you have the trackpad connected?
Do I need to connect the battery?
You asked if I connected the trackpad. But not sure if you have reading issues.
I told you before that I was only connected with
FAN
SCREEN
So trackpad is not connected.... the shorted mic is not connected and anything else that is not FAN and SCREEN
Now I am doing this operation with
FAN
SCREEN
TRACKPAD
Please again, be compreehensive with you information for me to fix this machine. We are here for almost a month
You asked if I connected the trackpad. But not sure if you have reading issues.
I told you before that I was only connected with
FAN
SCREEN
So trackpad is not connected.... the shorted mic is not connected and anything else that is not FAN and SCREEN
Now I am doing this operation with
FAN
SCREEN
TRACKPAD
Please again, be compreehensive with you information for me to fix this machine. We are here for almost a month
Trackpad is required for DFU, as other technicians claimed on Internet.
If you got padlock sign, means revive has been completed.
Restore may help better,but will erase SSD.
If you got padlock sign, means revive has been completed.
Restore may help better,but will erase SSD.
Ok broo
If revive is completed what to do now??????
I need the files inside this machine! I told you already
If you was able to complerte DFU revive, data may be recovered into DFU mode; by an aurhorized Apple workshop!
To recover data in DFU mode, REQUIRES access to Apple server!!!