this is my first time having this issue...everytime turn on will have this kind of word before apple logo appear....and sometimes just stuck here and have to force shutdown and turn on again....anyone have solution for this?
macbook pro late 2012 A1425 boot issue
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by Ancient1Hi
I received such Laptop as junk. Opening it I saw a lot of whitish water residue , but no corrosion really ( few coils have small brown rust marks, no green copper ).
I cleaned all thoroughly and interestingly , its the Battery BMS board that has the real corrosion spots.. under the protective clear Goo !!
I want to try and power up the laptop
Battery is swollen. But I don't want to buy a new battery right now , of course .
I started work on the BMS by zooming in on green spots . 2 VIAs are filled with rusted copper goo - who knows...8 Photos04-17-2024, 12:46 AM -
by No LanHey everyone,
Usually, I'm not the type to ask for help, but this time, I'm calling on your wisdom and expertiseI've seen what this community can do, so I'm pretty sure you guys can help me out.
Here's the deal: I noticed my MacBook got stuck in a boot loop. After opening it up and doing some initial troubleshooting, I found that the boot loop stops only when the trackpad is unplugged.
Now, just so you know, the trackpad actually works — I tested it with another motherboard and it's all good. Same for the cable, no issues there. The problem is only... -
by Gigabit2I have a late 2013 MacBook Pro 15" here, with light on charger but does not boot with or without battery installed. Can anyone provide assistance?
I checked these rails:
PPDCIN_G3H - 19.80 (20V mode)
PP3V42_G3H - 3.41 (20V mode)
PPBUS_G3H - 12.56 (20V mode)
PP3V3_S5 - 3.32 (20V mode)
These look okay to me, where should I look next? -
by RezendesHello, I am looking for any and all files related to the mainboard for 820-2565-A (13" Macbook Pro A1278 mid 2012) schematics/board view.
I looked through forum search results and google and was unable to find a board view file, I found a pdf of all the schematics but I don't know where the parts physically are on the board as this is my first macbook board level repair attempt.
The macbook charger has a green light, the battery has been replaced and OS reports Normal status but Not charging. After cleaning a corroded capacitor it crumbled off the board. There...-
Channel: Schematic Requests ONLY!
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by twonk9098I have read many forums that state the Macbook Pro 2015 needs / does not need a battery to boot. I'm not convinced as yet which is correct.
The Macbook Pro mid 2015 I have has no battery and do not really want to buy one just to test.
This model has the newer trackpad which is not clickable when turned off.
At the moment, without battery it does turn on with no display (with backlight), no chime and then turns off after 13 seconds. I see this from the power draw on my DTPS.
If I hold the power button whilst connecting the magsafe 2 charger it turns on, again no image but... - Loading...
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