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  1. Y

    820-00165 no turning on..

    sorry, pin 8 is 3.4v there is 8 pins. 3v3_s5 - 0.5v
  2. Y

    820-00165 no turning on..

    green/orange.. U1950 just pin 1(PP3V42_G3H) get 3.4v all the rest 0v was replaced U1950 but the same.. all around look good and no shorts.. also "shake" SMC but still the same. any idea?
  3. Y

    820-00939 mac mini stuck on apple logo

    i was tried but the same, its download the interne recovery and when its finish and upload its stuck on apple logo(no bar loading appear) very wierd
  4. Y

    820-00939 mac mini stuck on apple logo

    I was take out the CMOS(battery) , connected the core, turn in on, but the same stuck at apple logo, I was also tried to do internal recovery but it was struck on 99% loading
  5. Y

    820-00939 mac mini stuck on apple logo

    reconnect or disconnect and try..?
  6. Y

    820-00923 not charging.

    TBA_GATE_Q4 didnt get 13v so i was replaced Q7040 now there is 13V on TBA_GATE_Q4 but still the same 20v 0.8a charger with battery(before its turn on) is its on is 5v 1.4a
  7. Y

    820-00923 not charging.

    replaced both still the same.. with battery data cable 5v 1.4a without 20v 1.2a and working.. the mac recognized the battery but it gave the cable sign instead the lightning sign.
  8. Y

    820-00923 not charging.

    SMC_USBC_INT_L - 3.4v 300
  9. Y

    820-00923 not charging.

    suddenly im able to turn in on with battery but its not charging, 5V 1.4A. can be ISL or something from the UB300/400 area?
  10. Y

    820-00923 not charging.

    when i connect the battery and turn in on , the voltmeter show 20v 1.4a and i see for one sec the backlight and is down to 20v 0.8a
  11. Y

    820-00923 not charging.

    NO.. The story is that the customer replaced by himself the battery and then it was not turn on.. the damage: UB300 and UB400 was burned out i was replaced them and then this is the situation.. i have another good board to compare but i can find the problem 🤦‍♂️
  12. Y

    820-00923 not charging.

    2.5ohm good and bad boards
  13. Y

    820-00923 not charging.

    all good (compare with good board)
  14. Y

    820-00923 not charging.

    SMBUS__SMC_5_G3_SCL 400 SMBUS__SMC_5_G3_SDA 400
  15. Y

    820-00923 not charging.

    wait there is new news.. the mac TURN ON just with charger and charger with battery "alone" (without the battery data cable). but with the battery data cable is NOT turn on. the battery is fine with 100% charge was checking with other board.
  16. Y

    820-00923 not charging.

    do you mean all the BUS/MBUS lines?
  17. Y

    820-00923 not charging.

    NO of course not.. just the voltage measuring
  18. Y

    820-00923 not charging.

    yes the correct percentage. charger and battery connected: SMBUS__2/3_SDA_Q 0V 2 is O.L / 3 is 500 SMBUS__2/3_SCL_Q 0V 2 is O.L / 3 is 500 SMBUS__SMC_5_G3_SCL 3.4V SMBUS__SMC_5_G3_SDA 3.4V SMBUS__SMC_4_G3H_SDA/SCL 3.4 600 SMBUS__SMC_2_S4_SDA/SCL 0V O.L
  19. Y

    820-00923 not charging.

    820-00923 no water damage, came with short on PP3V3_UPC_TA_LDO, i was replaced UB300 and UB400, now the Mac is on but not charging. 20v 0.6a with good know battery. working fine just with charger or just with battery. PPBUS with battery 10.6v.
  20. Y

    820-00939 mac mini stuck on apple logo

    yes but still stuck on apple logo, its stuck when the loading bar should appear.. but you see just the apple logo. but when i do restore with DFU there is the loading bar but after that its start over and stuck on the apple logo
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