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  1. Palhano

    820-00850 - does not charge battery

    The device turns on normally with the battery charged, but the Mac does not recognize the charger in any port. With the battery, I have 20v 0a. Without the battery, the Mac does not turn on, I have 5.13v 0.23a. I have 12v on the PPBus. In the CD3215 tests I noticed that at times I have, in...
  2. Palhano

    820-00430 - sound with optical output

    I waited for the sound problem to appear and compared pins 16/18/20 with another board! In diode mode, pin 20 was giving 0.120, while on the good board it was 1.700. I replaced C6602 and L6607, now it's the same and the sound is working. I'll keep testing to see if the sound fails again. I'll...
  3. Palhano

    820-00430 - sound with optical output

    Imac with intermittent sound. Sometimes the sound comes out of the speakers normally and then switches to the optical output. The volume icon shows a prohibition sign. I tried changing the P2 connector 3 times, but the problem persists. I searched the forum for alternatives to "kill" the P2...
  4. Palhano

    820-3662 - MacOs only starts without trackpad or battery

    "So it stays on in boot menu?" Yes, it gets stuck in the Menu. It allows you to choose the boot option, but when I select it and press enter, it gets stuck with the boot options and doesn't even start loading. "It only crashes when try to boot OS, or ASD?" When I turn it on without the battery...
  5. Palhano

    820-3662 - MacOs only starts without trackpad or battery

    Yes, without a trackpad the battery is recognized, charged and the Mac works only with it.
  6. Palhano

    820-3662 - MacOs only starts without trackpad or battery

    It was the first thing I tried (I forgot to comment)! I also tried with a good bios chip! Nothing changed!
  7. Palhano

    820-3662 - MacOs only starts without trackpad or battery

    SMC_LID with battery and trackpad connected is 3.4v, stable
  8. Palhano

    820-3662 - MacOs only starts without trackpad or battery

    Yes, both crash as soon as the apple appears. Just to be sure, I put this board in a complete topcase (keyboard, trackpad, battery), working 100%. Same problem.
  9. 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...
  10. 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?
  11. 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.
  12. 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...
  13. Palhano

    820-00928 - 20v - 0a

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

    820-00928 - 20v - 0a

    Yes, I tried up to 96w!
  15. 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
  16. 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
  17. 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?
  18. 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?
  19. 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.
  20. Palhano

    820-00928 - 20v - 0a

    Yes! I also get the PP5v_S5
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