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yes I understood! without the u3100 the voltage at C3105 is 0v.

Without the chip, the C3105 is zero. In OL diode mode. Good sign, right? My CD3215 chip is over, I'm going to order it and try to change it again.

I got a good board and compared some components in diode mode. I found pin 2 of the D7005 changed, I changed it and it seems to work. Mac running on battery and charging with magsafe 45w.

I tested with two CD3215 chips, same problem. There is no short between C3100/5. Could it be a short inside the board?

Sorry! I was searching in another topic about the problem and I was mistaken with the line: PP1V8_UPC_TA_LDOA

While it had battery power, the mac would turn on, but it wouldn't recognize the charger. I have 20v, the board starts to boot, pulls it down to 0.6v and restarts. I discovered PP1V8_UPC_XA_LDOD reading 3v on the UB300. I changed it, but the problem remains. But only when the charger is in its...

Good file, it worked. But I needed to change my recorder because of the 128 chip model.

I had already changed it, but I changed it again. Nothing changed!

I've already tested it with two original 45w. Both don't work. I don't have a fake to test. I tested two original MagSafe 85w on another Air working 100%, PPDCIN hit 16.5v too. This board is difficult! =/

customer turned off the imac while updating the firmware in the macOs update. Do you have the bios file? Another problem, my recorder does not read the chip model (MX25L12873L). Do you have any to recommend?

the 45w drops more every day! now it stays at 2v and keeps going down

PPDCIN_G3H with 16.5v. The 45w MagSafe no longer works.

Follow voltages. Without battery and with magsafe 85w 1 - 0 2 - 16v 3 - 4.2v 9 - 0 12 - 3.4v 13 - 3v 14 - 3v 15 - 0 17 - 8.5v 19 - 5v 20 - 5v 27 - 16.5v

Situation got worse. Now it only turns on without a battery. I tested with 85w and now I have a problem with 45w, without LED and low PPDCIN. Q7010 - without battery and with magsafe 45w 1 - 15v 4 - 6.7v 5 - 15v U7100 - is there any point in measuring without battery power?

The strange thing is that only the original 45w magsafe does this R7180 - 100k R7181 - 62k R7185 - 470k R7186 - 332k

I discovered that the voltage drops more. it ended up with 2v. But only when the battery is connected. I measured directly on the J7000. I replaced the R/D7012 and Q7010 to test, same problem. I tested the charger without the q7010, the PPDCIN on the j7000 had a stable 15v with the battery...

I've already tested it with two original 45w chargers, same problem! I tested the chargers on other Macs, they worked! they are 100%

Original 45w with battery, problem. Original 85w with battery, works normally. I have no fake source! I used the bench source, it works normally.

goes down to 7.7v. But PPBus follows 8.1v (with battery)

The problem only happens with the board, dc and battery. I noticed that the entire PPDCIN_G3H line drops the voltage, it drops even when connected to the 45w charger. I replaced the Q7180, but it didn't solve the problem. It looks like a leaky component. But I can't find it.