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  1. H

    820-3208 No SSD

    I also check the same pin (19) on a working board with working SSD, but the value still the same (3.27V).
  2. H

    820-3208 No SSD

    I check continuity with the up part of the SSD and it works, so the pin is touching the disk but the voltage doesn't change when it is inserted, 3.3V. The SSD is good because i tried on other machine and ther conector is new. I also check impedance of every pin and compared with a working...
  3. H

    820-3208 No SSD

    Also the SSD_RESET_L is high : 3.34V
  4. H

    820-3208 No SSD

    Hi, i check signal with oscilloscope (and compare with other functional board) and is good. Voltage is 3.3V.
  5. H

    820-3208 No SSD

    Yes, i knew that. Ok, thank you, tomorrow ill check the signal and keep you posted.
  6. H

    820-3208 No SSD

    I already boot from USB but it not detect any internal disk. I tried boot also EL Capitan to avoid APFS problems.
  7. H

    820-4924 Keyboard and trackpad disappeared after boot

    You are the number one ! It had a fall after boot on the PP3V3_S3 due to a corrosion quite invisible. Thank you very much !
  8. H

    820-3208 No SSD

    Hi, no internal SSD recognized. Things done : - Changed U4510 - All capacitors from C4510 to C4520 have correct values - Connector J4501 changed (there was a short with pin 7) - PP3V3_S0 present on Pin 1, 2, 24, 25, 26 - 3.4V on pin 20 (SSD_reset_L) Thanks
  9. H

    820-4924 Keyboard and trackpad disappeared after boot

    Hi, i have a problem with a Macbook Pro 13" 820-4924. Keyboard and trackpad work perfect if i push option button at start : can select drives, enter wifi key and move the trackpad. After boot OS they both disappeared and appear the windows where i have to connect a bluetooth keyboard or mouse...
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