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.
I discovered that I do not have the PP3v3_s5, even with the battery connected, which stays at 20v and pulling 0.7a and restarting. There is no short in the line, diode mode 0.330
My Mac stopped working overnight.
I took it apart and it was very dirty. I thought it was a typical short on the SSD's 2.5V line, but there were no shorts.
I have G3S voltages, and on the SSD, I only have 12.6V PPBus. I don't have 2.5V.
Regarding SMC_RST*, my notes showed NC for the 9240...
I forgot the measurements of the u7000. I forgot the measurements of the u7000. With the F7000/1 in place
P_IN - 20v
AUX_DET - 4.1v
SMC_RST_IN - 0
VDDA - 5v
VDDP - 5v
EN_MVR - 5v
SMC_RST* - 1.8v
AUX_OK - NC
AMON - 0
BMON 0
With the battery connected, I have 20V, it starts pulling 0.6A, 0.7A, and then drops to 0, looping. Without the battery, it stays stuck at 20V and 0.02A (stable).
- I use an original 87W charger.
- All CD3215s have perfect LDO lines
- Same behavior on all ports
- I tried to restore in DFU, but...
It was the D6950 shorting on the SDA line. I replaced it, the short went away, and I have 12V on the C7050. I put the F7000 back in, and the board is working.
Thank you so much! Always a lifesaver!
I discovered that the 3v3_s2 line was missing. So I replaced the UC710 and it worked.
Now I have a picture on the screen and the fan is on automatic.
Note: I'm using the UP800 from another board!
Thanks for the tips!
3.4 ohms on both C7020/23
SMC bypass mode doesn't turn on. The meter stays at 5.1V, turns off, and returns to 20V, without turning on.
I'm using an original 87W charger. I also tried a parallel charger.
The customer said they were using their Mac, the screen went blank, and the sound continued. When they turned off the Mac and tried to turn it on, it started with the fan running at maximum speed.
When checking the motherboard, I found oxidation on the UP800. I don't have this chip new, so I...