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.
In smc bypass mode with charger and battery connected and turned on 20v coming in:
It was 0.05 but I wrote 0.5 before, my bad :/
The charger cycles between trying to switch from 5v to 12v with battery. CHGR_A/BMON are 0v.
I found something accidentally,
1. starting MacBook without battery ribbon with charger.
2. I turn on the laptop.
3. I connect the battery ribbon (while it's starting) and the battery reports the right...
Just battery SMC bypass without charger does not work,
Battery with charger (and battery ribbon) SMC bypass. It starts, errors out first 1-2x, then it boots normally but I cant see the battery show up anywhere but this can be because of the bypass. If I disconnect the charger the battery holds...
Yes I have tried with the used known battery that came glued in with a top case, and 2 ebay batteries. They all have the same problem. It only happens when I connect the ribbon so it might be a lithium security cutout?
It made 20v work without battery, with battery it still power cycles :(
I just want to remind you that I destroyed the pad under pin3 as mentioned in the first post, so I had to wire
D6902 pin3 <-> pin1 c6906
D6902 pin3 <-> pin1 c6905
R6920 is 0.8ohm, both sides are identically 3.4v
I get open circuit on ppvin_g3h_p3v3g3h, thats the part where I was soldering...
I wonder if I blasted the 2.2UF 20% 35V X5R capacitors when soldering them
got the fake battery and a macbook top with a used old battery. before I had chance to test any of it I realized that the 20v is not kicking in without the battery anyways.
ppvin_g3h_p3v3g3h is 3.6v
u6903 enable is 4.5v
SMC_RESET_L and BUF_SMC_RESET_L = 3.4V
PP3V3_G3H_REG_R= 3.418 v...