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  1. D

    820-3435-B kb and T/P are not working.

    R6950 =10k looks good . I check battery connector looks clean
  2. D

    820-3435-B kb and T/P are not working.

    All communication on SCL/SDA lines of battery bus are good.
  3. D

    820-3435-B kb and T/P are not working.

    Thanks for replying. No, i dint change ISL. voltage on AMON p9= .171 ( only charger connected ) voltage on BMON p15= .172 ( only charger connected ) voltage on AMON p9= .172 ( battery connected ) voltage on BMON p15= .104 ( battery connected ) resistance between pins 17/18=...
  4. D

    820-3435-B kb and T/P are not working.

    Is there any ASD for Macbook Air 11 2014, A1465 available?
  5. D

    820-3435-B kb and T/P are not working.

    Now i stuck, i don't have ASD for Macbook air 11 2014, A1465, any body can help me please.
  6. D

    820-3435-B kb and T/P are not working.

    PPBUS_G3H voltage w/ = 8.57v and w/o battery connected=8.57v
  7. D

    820-3435-B kb and T/P are not working.

    I found missing R4844, replase it now t/p working fine with the following measurement U4810 (diode mode ) p2=.509 and p6=.432. Still i see j4800 p2=.441 and it should be OL compare to good one. and my battery is not detected. I tried two battery. All other functions of the mac are working...
  8. D

    820-3435-B kb and T/P are not working.

    820-3435-B kb and T/P not woirking. It was water damaged.Did ultrasonic cleaning, check with good known all cables and i/o card but no luck. compare with good known mb Diode mode measurement all are good, except J4800 pin2 is .441 but the good one mb show me OL. So i checked R4850=33 OHM ...
  9. D

    820-4924-A no display, no bklight but it has chime

    changed u8300 , now got 5V and unit show me the display.Thanks a lot 2informaticos.
  10. D

    820-4924-A no display, no bklight but it has chime

    this was schematics error, the right one is as following: U8300: P3=5V P5=0V U8340: p1= 0v and p4=0v tried good known lcd.
  11. D

    820-4924-A no display, no bklight but it has chime

    check U8300/30/40 voltages in these 5 seconds...as following u8300: 1= 5 then drop 3v , 2= 3.2 v drop 0v , 4=5v stable. ,6= 0v , 7= 0v , U8330: P1=0V, P2,5=0V,P3=3.3v & drop 0V, P6=3.3v & drop 0V, P7=0V, P8=3.3V. U8340: P4=0V, P5=3.3V, P1=0V.
  12. D

    820-4924-A no display, no bklight but it has chime

    Thanks. U8330: P1=0V, P2,5=0V,P3=0V, P6=0V,P7=0V, P8=3.3V. U8340: P4=0V, P5=3.3V, P1=0V.
  13. D

    820-4924-A no display, no bklight but it has chime

    After 10 minutes ultrasonic and 8 hours dry up, found video connector pin 3&4= 5.1v, p1=0v, p5=3.3v but after 5 seconds it drop 0 v. Found water damage around U8300, and pin1=5v, p2=0v, p4= 5v, p6=0v and p7=0v. Please help me what it could be the problem. Thanks in advance.
  14. D

    820-4924-A no display, no bklight but it has chime

    This is water damage everywhere. at least in the first seconds, when power on the board= 0v No USB Activity, no external also.
  15. D

    820-4924-A no display, no bklight but it has chime

    hi everybody, after long time back to work. This is water damage ,A1502., 820-4924-A Turn on but no image no bklight but chime. ppvout-s0=0v pp5vr3v3_sw-lcd= 0v connector pin 28,29,30= 0v and pin5 =0v bklt-en=0v smc-lid =3.4v scl=.458 and sda=.468 diode mode. U8330: PIN1=0V...
  16. D

    820-3476-a no back light, water damage.

    Dont have same screen, is there any other way to check it?
  17. D

    820-3476-a no back light, water damage.

    i have 820-4924 assembly , is it compatible with 820-3476?
  18. D

    820-3476-a no back light, water damage.

    Turn on and chime with display logo but no back light. LCD connector was corroded chance it and light back in normal.After 10 minutes testing again no back light and no display. With LCD CONNECTED 1. PPVOUT_S0_LCDBKLT=0v, I2C_BKLT_SCL=5v, I2C_BKLT_SDA=5v, LCD_IRQ_L=3.3v...
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