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  1. I

    820-00840

    Yes PCH, not gpu. I was working on another board and thought I wrote PCH, not GPU, no harm done, and my GPU is not mine, it's the client's. I understand the difference between a GPU, PCH, and CPU if you're worried about that ;) Thanks, 2informaticos for the help as always :)
  2. I

    820-00840

    U7852 contacts were looking funny, and with a new one, I got the same readings. The big coils all have good value, except for L7900 pin 2 PPVCCPCH_S5G is 0 reading diode mode. That leads to GPU. When I inject 0.5v the GPU heats up on the thermal camera. Also L8060 pin 2 takes voltage when...
  3. I

    820-02016

    The client decided to buy a new laptop. Thanks for the help, I appreciate it 🙏
  4. I

    820-00840

    Hi, repair people :) I have this A1708 MB that had no power. There were shorted caps C6425 and C6405, both CD type C controllers, and a P13USB32 chip(not on schematics or BW). After all that I plugged in and got 20v, it stays around 0.046 and then goes to 0.056. All Ics are taken from another...
  5. I

    820-02016

    All voltages present there
  6. I

    820-02016

    Any ideas please?
  7. I

    820-02016

    I disconnected the internal LCD and still shows the same black screen with backlight and cursor moving like on two screens
  8. I

    820-02016

    Thanks, I'll try and revert :D Happy day ☀️
  9. I

    820-02016

    Yes I'm getting a dark screen with the cursor moving , like a second screen, but the client forgot their login pass so cannot login fully
  10. I

    820-02016

    PP3V3_SW_LCD - 3.3v EDP_PANEL_1V8_EN - 1.8v RP600 - 1.2 on both sides
  11. I

    820-02016

    Hi. I have this M1 A2337 board that powers on normally and I have a backlight and no image. I measured all voltages and diode mode readings on the LCD connector and all seem fine. The board doesn't show anything burned, and no liquid damage. I tried 2 other LCDs but still just backlight no...
  12. I

    MacBook A2338 820-02020

    Okey I will get a new TP and try. Thanks :D
  13. I

    MacBook A2338 820-02020

    When I replaced the U8440 from another board the laptop stopped showing a picture on an external monitor. Once I soldered back the original U8440, it started showing a picture again, but now the keyboard and trackpad are not working. I replaced another trackpad and flex for it but still the...
  14. I

    MacBook A2338 820-02020

    I already replaced it and the voltages went back the same as with the original U8440
  15. I

    MacBook A2338 820-02020

    I replaced U8440 and voltages went back the same as before
  16. I

    MacBook A2338 820-02020

    0v with a disconnected audio cable. with removed U8440 I get 1v on PMU_ONOFF_L and PMU_RSLOC_RST_L. Do i change U8440?
  17. I

    MacBook A2338 820-02020

    It's good 10k measuring
  18. I

    MacBook A2338 820-02020

    I'm not sure if the schematic was good. This BW I got is 820-02020-10, but now I found the 09 version, which shows that C8350 and R8410 are not connected on pin 1, and on the 09 version, they are marked R8410 and C8312, which matches the schematic. R8324 is 0v, not coming from that side the voltage
  19. I

    MacBook A2338 820-02020

    Update: PP3v8_AON 3.8v PP3V3_AON 0v - diode 369 PMU_ONOFF_L - 0.14v - diode 350 PMU_RSLOC_RST_L - 0.14v Diode 325 VSS_ANA_MPMU 0.9v , should be 0v as per schematics note PP1V8_AON_MPMU - 1.8v on pin 1 R8410 PP1V8_AON_MPMU - 0v on pin 1 C8350 These are strange readings cause Pin 1 on C8350...
  20. I

    820-00840

    Hi. I have this A1708 no power draws 5v 0.020-0.030 range. This one I fixed 2 years ago and replaced U2800 and also one of the type c controllers. This time I re-balled U2800, and didn't work so I changed it from another board, and still the same. No short circuit on the board.
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