For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
With Internal LCD Disconnected and external video connected the machine draws a steady 20V and i can see the apple logo on the monitor. But it gets stuck there.
Can it be a Hall Sensor Issue ?
R6950 is 9.8 K Ohms (Between the PINS)
Diode Mode to Ground 2.664
I put a 200K resistor instead of 10K and it switched on with Battery Connected and 1% Charge with "Battery Not Charging".
Put back the 10K resistor on the board.
With Battery Connected.
All at 12.07V Only TBA_BGATE at 4.2V
All at 13.09V
SCL/SDA Lines at the Battery Connector is .430 Diode Mode to Ground.
If i connect the charge first and the connect the battery after machine is booted. Restart it.
It detects the...
I dont kow how it happened but it got knocked off again. Now the point is missing from the board so i had to run a jumper wire from the test point on other side of the board to pin 2 of R6051. I get diode mode reading of .750. But still it is not working on battery.
C7020/3 is 2.9 Ohms.
For My Reference Only - FIU
Booting only on charger. Sometimes showing the question mark folder.
After opening the machine i found it is full of dirt. Customer has they had it kept for a couple of years.
Clean the dust properly. After inspection i find C5002/C5007/C5017 corroded...
It was working well but one fan wasnt spinning. So i removed the board and saw that the fan wasnt connected ( the one that connects to the keyboard.
after connecting that fan started spinning very fast so i disconnected it and the machine went dead again. Same short as before. Working on it...
Yes. Short Removed. i put back the board on the chasis. I connect the charger. I get the chime and then nothing. Its back to being dead.
PPBUS is still 0V.
PPVIN_G3H_P3V3G3H is 3.9V
PP3v3_G3H is 2.2V.
Diode Mode Reading to Ground is .384
PM_EN_P3V3_G3H is 4.7V
R6902 and R6915 Resistance...
I put back
U7000 - started getting value. Removed it
U6903 - started getting value. Removed it
C6906 - started getting value. Removed it.
Are all these components bad ?
Putting back these individually and started getting value in diode mode instead of OL.