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  1. E

    820-01521-A No power 5 or 20v

    I do get 1V1 J6100 Pin 32 0.713 Pin 33 0.395 I can't get to go into DFU. It was not even recognized when I connected the cable to the host Mac. I got a thunderbolt that can`t be used. I tried few different cables
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    820-01521-A No power 5 or 20v

    I checked all the voltages are ok. The diode mode is around 0.500 on all
  3. E

    820-01521-A No power 5 or 20v

    Hello, I am working on a Macbook air A1932 model that came with water damage around Q7660 which I already replaced. Symptoms are if I plug in the board only without a battery I get 5V 0.01A if I plug in the battery, I get 20V 0.02A I did the followings : Measured PPBUS_G3H, PP3V3_G3H Are ok...
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    A2338 820-02020 5v 0.07 not turning on

    All right, My apologies; I should have checked with a new screen. I found a broken screen but showing backlight. It Is amazing how the components communicate with each other. I kept thinking was a board issue. Thanks for everything.
  5. E

    A2338 820-02020 5v 0.07 not turning on

    UP710 from the schematics I see that is enabling the display, which is working; I went to UP800 is not giving any voltage on LCDBKLT_SW, this was replaced. QP800 I have 11.5V on pin 3 and 11.9 on pin 4. I am quite confused as I can't spot any other short or any reason why UP800 is not producing...
  6. E

    A2338 820-02020 5v 0.07 not turning on

    I get image, but no backlight. I have replaced the backlight driver but is same. I will check the signals as well shortly.
  7. E

    A2338 820-02020 5v 0.07 not turning on

    I have removed the short, and the MacBook is turning on, but now I get full fan spin and no backlight or touch bar on. Any help would be appreciated.
  8. E

    Macbook a2337 sound not working

    I found a line CODEC_WAKE_L going to U8100. It looks like a small burn. I am right? I do get headphones sound.
  9. E

    Macbook a2337 sound not working

    Hello, I got a MacBook air a2337 with liquid damage; the audio board was damaged, sort and no power, I removed the short, and then I got the MacBook back on after this sound was gone. I decide to replace the audio board, but the sound is still not working. Speakers are ok. The motherboard is...
  10. E

    A2338 820-02020 5v 0.07 not turning on

    Yes, confirmed the SLG4AP43605V( UP710 ) is shorted to ground. Now the issue is that I am unable to find this ic. Any hint?
  11. E

    A2338 820-02020 5v 0.07 not turning on

    I took out the UP700, and measured all the lines, but EDP_BLC_5V_EN is shorted to the ground. UP710 might be faulty?
  12. E

    A2338 820-02020 5v 0.07 not turning on

    I have injected 2v on LC320 and UP700 is getting hot.
  13. E

    A2338 820-02020 5v 0.07 not turning on

    Hello, I have received a Macbook Pro with no power. The device was affected by water damage, I fixed all the corrosion found, but it is still the same. The voltage is 5v and 0.05a to 0.08a slowly fluctuating. PPBUS_AON is stable 3V8_AON is 0.200V going to 0.400V. LC320 in diode mode is 0.009...
  14. E

    820 3023-A Not booting not mounting

    Thank you so much, I was thinking about this, but I wasn't sure.
  15. E

    820 3023-A Not booting not mounting

    Hello, I received a job with a very damaged board 820 3023-A and I decided to replace it as they were too many issues. After I have replaced the board I am unable to boot from the same hard drive that was in. The hard drive is working all right but it seems that I can manage to mount it or to do...
  16. E

    Macbook pro 820-01700 T2 Issue no revive or restore

    Hello, I actually have 87W charger, I will try today with 96W as well and reply back, thanks The voltages looked ok but I will also double check again.
  17. E

    Macbook pro 820-01700 T2 Issue no revive or restore

    Hello, I have a MacBook pro motherboard that is not turning on, this had the battery previously replaced. I have tried the following: Plugged in the charger is showing 5v 0.03amps when I go into the dfu mode is showing 20v 0.03 to 0.07, sometimes goes to 0.38amp. After I try to revive it, is not...
  18. E

    iPhone XS max is rebooting after replacing the charging port

    Hello, I have a very wired issue here, I have replaced an charging port on iPhone XS max, everything is working fine but after around each 2.5 minutes the phone is restarting. Here is what I have tried: I inspected the components on the board (they look fine) Took one by one each connector...
  19. E

    Macbook Pro 820-2915 Powers on only plugged in

    Hello, I have reball - ed the SMC everything is the same, powers on only if is plugged in, battery indicator is not showing noting, sometimes is turning on if I try few times unplugged. The battery is good and if I turn on is showing the percentage ok and the macbook is running fine. Any help?
  20. E

    Macbook Pro 820-2915 Powers on only plugged in

    In the case that is doing the same after SMC reball could you tell me where to look? Just in case. Thanks
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