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.
Sorry, I think now I understand.
3V3_S5 is stable. When I press the power button, it drops and goes back to 3.3v. The 12V_S5 has no drop.
Do you recommend somewhere to buy the Q6970? I can't find it anywhere.
It worked for a few hours and stopped. Having the same problem, LED 1 blinking.
I went to start checking the lines, it started working again. When there is a problem, 3V3_S5 is stable.
Board with LED always on, when I press power, LED 1 blinks.
I'm using the data from 820-3478!
Replaces the Q8450 and U8470 (FET_EN_P12V_S5 has 11.1v, even after changing)
Any tips?
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.
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...
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?