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  1. P

    [help]Macbook Air 820-3437 Dead

    U7501 basic voltages; 23, 22, 12, 13, 29, 21: 8,5 / 3,3 / 3,4 / 0 /0,7 /3,3
  2. P

    [help]Macbook Air 820-3437 Dead

    R7563 15 ohm R7560 9,5k R7561 7k same readings of another motherboard
  3. P

    [help]Macbook Air 820-3437 Dead

    i'm going crazy..i think i will commit suicide....pleas 2informaticos...forgive me for all this chaos.... i have soldered a BRAND NEW U7501...now i miss some voltages...help :( 3V3_S5 not present 3V3_Sus not present P3V3SUS_EN 0v PM_SLP_SUS_L 0v (no short) PM_PWRBTN_L 0 v SPIROM_USE_MLB 0v...
  4. P

    [help]Macbook Air 820-3437 Dead

    3V3_S5 is 2,8v r7560/1 1,4v r7563 2,8v
  5. P

    [help]Macbook Air 820-3437 Dead

    this is the voltage PP3V3_S5_REG_R if i put probes right before connecting power supply https://www.dropbox.com/scl/fi/yi41k...pcctutaa4&dl=0 That it stuck to 2,8v..and i think it should he 3,3
  6. P

    [help]Macbook Air 820-3437 Dead

    i don0t know what to do
  7. P

    [help]Macbook Air 820-3437 Dead

    S5_PWRGD is 0,3v.... i cant find where to cut trace...i could put some uv on pin 20 and resolder u7501
  8. P

    [help]Macbook Air 820-3437 Dead

    However i can't see trace from pin 20 or from r8141...even scraping...
  9. P

    [help]Macbook Air 820-3437 Dead

    why? i have changed u7501...
  10. P

    [help]Macbook Air 820-3437 Dead

    r8141 (same value) and u7501 changed ,,,,still 0v STILL 0V EVEN WITH 10K RESISTOR
  11. P

    [help]Macbook Air 820-3437 Dead

    0v no shorts on the other side of the resistence i have 3,3v
  12. P

    [help]Macbook Air 820-3437 Dead

    PPBUS at 8.6V No Fan Spin I get Magsafe light (green than orange with or without battery) motherboard water spill (cleaned from another techician) 3V3_S5 present 3V3_Sus not present P3V3SUS_EN 0v PM_SLP_SUS_L 0v (no short) PM_PWRBTN_L 0,3v SPIROM_USE_MLB 0v S5_PWRGD 0v PCH_DSWVRMEN - 3,1...
  13. P

    [help]820-00165 TOTALLY DEAD! NO LED LIGHT CHARGER

    Yes and short persists also removing u1900
  14. P

    [help]820-00165 TOTALLY DEAD! NO LED LIGHT CHARGER

    i'm too scared that pch is dead
  15. P

    [help]820-00165 TOTALLY DEAD! NO LED LIGHT CHARGER

    https://www.dropbox.com/scl/fi/fwulruf9r4yhnn4xn2e8h/Video-27-02-24-09-05-29.mov?rlkey=m9iuirnpekkht8mcco4lr9nwf&dl=0 Ppvrtc_g3h: game over?
  16. P

    [help]820-00165 TOTALLY DEAD! NO LED LIGHT CHARGER

    I can’t see anything hot under thermal camera….i will try to remove u1900 How can I program smc?
  17. P

    [help]820-00165 TOTALLY DEAD! NO LED LIGHT CHARGER

    is it normal that ppvrtc_g3h is shorted?
  18. P

    [help]820-00165 TOTALLY DEAD! NO LED LIGHT CHARGER

    i mean bought new, not from donor board SMC_ADAPTER_EN, 0v PM_BATLOW_L, 3,3 PCH_DSWVRMEN, 0v PM_DSW_PWRGD 0,9v
  19. P

    [help]820-00165 TOTALLY DEAD! NO LED LIGHT CHARGER

    ppvrtc_g3h shorted! smc brand new...
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