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  1. K

    820-00840 not working from the battery [SOLVED]

    Sorry wrong reading R7075 gives 0v with battery and 5v with both
  2. K

    820-00840 not working from the battery [SOLVED]

    Definitely not U7000 or the SMC, ive just removed both from working board and reball them onto this piece of cr*p and the measurements are the same
  3. K

    820-00840 not working from the battery [SOLVED]

    R7075 with charger and battery is 19.8v R7075 charger only is same 19.8v
  4. K

    820-00840 not working from the battery [SOLVED]

    R7075 battery only - 11v voltage with battery and power lead connected taken at SMC SCL - 3.4v - same at J6951 SDA - 3.4v - same at J6951 Voltage after taking power lead off with battery connected SCL - 1.9v - fluctuating SDA - 1.9v - fluctuating Diode mode reading SCL - 0.40 SDA - 0.40
  5. K

    820-00840 not working from the battery [SOLVED]

    Tried another battery still the same. There is no comms on the SCL/SDA lines and I wouldn't have thought there would be as there's no P3V3_G3H so surly the SMC isn't even being powered. I just don't know if there is any communication between the CD3215 and the U7000 which then turns on the...
  6. K

    820-00840 not working from the battery [SOLVED]

    Sorry I forgot to mention that I've replaced the U7000 twice. Not sure it these are reballed cheap Chinese or if they are genuine. Is there any other factors that are needed to enable PM_EN_P3V3_G3H voltage signal to come from the U7000.
  7. K

    820-00840 not working from the battery [SOLVED]

    Battery connected C6990 is 11.51v R6991 is 0v Power lead connected then disconnect (battery connected) C6990 - 11.51v R6991 - 0.54 - 0.32 fluctuating
  8. K

    820-00840 not working from the battery [SOLVED]

    Hi, tried that and no difference. initially after changing R6905 I have 0v on P3V3_G3H. After connecting the power lead and then removing it with the battery still connected P3V3_G3H dropped to ~1.8v - ~1.7v fluctuating and slowly dropping to now after typing this to ~1.3v - ~1.2v.
  9. K

    820-00840 not working from the battery [SOLVED]

    I have the above which had mild liquid damage around the board which has now been fix and the logicboard is working but my problem is the battery. It will work with both the power lead and battery connected or just the power lead but if I pull the power lead out with the battery connected it...
  10. K

    820-00239 liqued damage and no backlight system turns on

    A quick question as I have the same problem as above, does the EDP_INT_AUX_N have a stable voltage that comes from the CPU? and if so does anyone know what this voltage is?
  11. K

    820-00923 Missing CPU-VCORE

    $29 for you just to come to that a assumption without even asking me any readings!
  12. K

    820-00923 Missing CPU-VCORE

    How long do I have to wait until I get a response to my problem?
  13. K

    820-00923 Missing CPU-VCORE

    Liquid damaged 820-00923 using 820-00293 Schematics and BV. I have all rails present apart from the following : PPVCC_S0_CPU PPVCCGT_S0_CPU PPVCCEDRAM_S0_CPU PP0V6_S0_DDRVTT I believe the last 2 won't have any voltages until the top 2 are working. Both the top 2 come from the U7100 I've...
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