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  1. Y

    820-00840 dead

    820-00840 dead the client said it have liquid damage but i can't see any corrosion PPBUS_G3H - 13.7V PPDCIN_G3H - 20.35V PP5V_S5 - 0V PP3V3_G3H - 3.426V PP3V3_S5 - 0V PP1V8_S3 - 0V pp3v3_sus - 0.00v pp3v3_s5 - 0.00v Buf_smc_reset_l - 3.424v smc_pm_g2_en - 3.420v U7890: 1 ssd_pwr_req - 0,33v...
  2. Y

    820-00239, no image on screen

    This kind of CPU is replaceable like the GPU of 2011 model ?
  3. Y

    820-00239, no image on screen

    OKAY, no light on the usb pendriver led, fan spinning and nothing on external screen
  4. Y

    820-00239, no image on screen

    usb c activity normal, i get 20v and start from 0.2a to 0.8a, that mean the board boot. if the battery connected it go to 2.5a
  5. Y

    820-00165 waters damage, board start but it stop at 0.45A

    820-00165 water damage, board start but it stops at 0.45A fan spin and CPU get hot no signs for water was on the board, but the client said so how to start the troubleshooting for this one?
  6. Y

    820-00239, no image on screen

    I have an 820-00239, the client tried to install a new screen with himself, i believe he didn't disconnect the battery before the installation, Now there is no image or backlight on screen, I tried 2 screens no image on external the fan spin and CPU get hot USB c 20v/0.8a battery charge...
  7. Y

    820-2915-B, sensor issue after GPU Replacement

    ok, I verified the ALS, Trackpad tested on another MacBook body, the fan spin fast and same problem i replaced the smc, U5550, and verified i2c line all is good...
  8. Y

    820-00165, shut down suddenly.

    I don't the tool to do this, but I swapped the bios from other board...
  9. Y

    820-00165, shut down suddenly.

    I have bought this board alone. It looks very clean. No water damage. when it boot the os, it shuts down suddenly and don't boot again. I tried aslo external os it takes too long to boot.
  10. Y

    820-00840 water damage

    Here is a picture...
  11. Y

    820-00840 water damage

    The board is consuming 20v/0.14a L7670 5.1V L7370 1.04V L7210 0V L7220 0V There was no a lot of corrosion on the backlight circuit, I hope CPU fine. I send a photo of this area
  12. Y

    820-00840 water damage

    I thought PPBUS_G3H need not be 20v, but I was wrong. PPBUS_G3H 13.05v L7670 3.3V L7690 3.3V I was wrong in the diagnostic from the beginning. The board get into S0 state, but no Vcore. The CPU get hot and the fan spin after while. ??????There been water damage on next backlight circuit, I...
  13. Y

    820-00840 water damage

    usb c meter 20v0, 0.03a PPDCIN_G3H 20v PPBUS_G3H 13.6v, is low R7020 13.6v voltage at L7030 11v i replaced u7000, but no change PPBUS_G3H is low
  14. Y

    820-2915-B, sensor issue after GPU Replacement

    Sorry, but what is ALS ?
  15. Y

    820-2915-B, sensor issue after GPU Replacement

    I found a broken pin in track pad connector on the board, I repaired it. but the same problem, I replaced also the track pad and the flex. I will upload a picture for the sensor issue
  16. Y

    820-2915-B, sensor issue after GPU Replacement

    i replaced the GPU, then i had a sensor problem TP0P and Tm0P where is placed this sensor ? does anyone have the sensor placement ?
  17. Y

    A1707, no image on screen, touch bar had random pixels colors

    [No message]
  18. Y

    A1707, no image on screen, touch bar had random pixels colors

    no there is a backlight it is 820-00281-a i didnt try a new lcd yet, have to buy a new one
  19. Y

    A1707, no image on screen, touch bar had random pixels colors

    I got the machine, it boots, no image on the screen, but there is a backlight. but I can see the mouse pointer in the top horizontal line, but the rest a black screen. if the screen goes bad for any reason why the touchbar also had this pixel image? the MacBook work on a second screen
  20. Y

    A1707, no image on screen, touch bar had random pixels colors

    okay, i will get the MacBook next week, actually, I was afraid that this model had some issues with the CPU or GPU and this be one of the signs
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