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  1. Palhano

    820-3662 - MacOs only starts without trackpad or battery

    I was able to run ASD 162 without the battery connected! With the battery on, when I choose to boot from ASD, the Mac crashes. It only showed an error in the battery sensors. Probably because it is without the battery. Sensor - Temperature (TBOT) -- Battery TS MAX (test 1) Sensor - Temperature...
  2. Palhano

    820-3662 - MacOs only starts without trackpad or battery

    Yes, the trackpad works normally without the battery. I tried to run it in diagnostic mode, but it doesn't work, it shows Apple support website and -510d. This model no longer has ASD, right?
  3. Palhano

    820-3662 - MacOs only starts without trackpad or battery

    I found some oxidation near J5250 and U7310. But nothing causing a short circuit. I replaced the components and cleaned everything. But the problem persists. The owner of the Mac did not report any previous problems.
  4. Palhano

    820-3662 - MacOs only starts without trackpad or battery

    I'm struggling with this logic board. If I turn it on with the battery and trackpad connected, the system doesn't start. If I disconnect the trackpad or the battery, it starts normally. I tested it with another battery and another trackpad, same problem. I checked the resistors on the trackpad...
  5. Palhano

    820-00928 - 20v - 0a

    R1212 is OK! PM_BATLOW_L in diode mode - 0.560
  6. Palhano

    820-00928 - 20v - 0a

    Yes, I tried up to 96w!
  7. Palhano

    820-00928 - 20v - 0a

    With the 100k resistor, I have 2.8v at PCH_INTRUDER_L. But it's still dead. and PM_BATLOW_L - 0.7v
  8. Palhano

    820-00928 - 20v - 0a

    Some measurements are not good! =/ PM_DSW_PWRGD - 3.4v PM_BATLOW_L - 0.7v PCH_INTRUDER_L - 1.4v PCH_SRTCRST_L - 3v RTC_RESET_L - 3v
  9. Palhano

    820-00928 - 20v - 0a

    I tested PM_PWRBTN_L when I activate SMC_ONOFF_L, it pulses to 0.3v. But I have no pulse in PM_SLP_S4_L, it is always at zero. Not a good sign, right?
  10. Palhano

    820-00928 - 20v - 0a

    I agree that the PPBus with 12.5v is perfect. But as I mentioned the Q7030/40 and when I checked it I noticed a difference, I found it strange. Any other suggestions?
  11. Palhano

    820-00928 - 20v - 0a

    Something changed in the Q7040, pin 12 in diode mode had 0.830, I found it strange that now it has 0.480, then I discovered that they are shorting with pins 11 and 10. I will order the components to change.
  12. Palhano

    820-00928 - 20v - 0a

    Yes! I also get the PP5v_S5
  13. Palhano

    820-00928 - 20v - 0a

    Do you suggest any other tests?
  14. Palhano

    820-00928 - 20v - 0a

    PPBUS_G3H is 12.6v
  15. Palhano

    820-00928 - 20v - 0a

    Sorry! There are so many measurements that I got confused in the description. On the C7050 I have 12.6v. I checked the AUX_DET again, I have 4v. I may have gotten confused. I checked the Q7030/40 in diode mode, on each pin, I found no changes.
  16. Palhano

    820-00928 - 20v - 0a

    The logic board is perfect, no oxidation. Using the original 96w charger, I have 20v - 0a on the 4 ports without the battery. With the battery connected, it gets 20a - 3a, but it doesn't turn on (probably charging the battery). I checked all the CD3215s (even with 20v, I thought it was better...
  17. Palhano

    820-00281 - PP3v3_3gh 2.2v

    It's quite complex. I even tried with my thermal camera, but nothing heats up. Do you think a CD3215 could be causing the problem?
  18. Palhano

    820-00281 - PP3v3_3gh 2.2v

    Mac arrived without turning on, with 5v on all ports. Perfect board, no oxidation. It didn't have the PP3v3_g3h line. I discovered problems on the PPVIN_G3H_P3V3G3H line, with 2v on the PM_EN_P3v3_G3H, after replacing the D6902, I now have 4v on the PM_EN_P3v3_G3H, but 2.2v on the PP3v3_g3h...
  19. Palhano

    Mac Studio won't turn on

    This is my first time using this model and I haven't found any boardview or schematics. If you have any tips, please. I removed the power supply and with it only on the power supply, there is no 12v! My question is, does it generate 12v without it being connected to the board? Some capacitors...
  20. Palhano

    820-02016 - 5v and 0.04a

    Yes, I checked all the LDO lines in diode mode, all with good values, comparing with the data I have in flexBV! I don't have another board to remove the U8100. The customer will replace the board. Thanks again for the tips!
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