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  1. Soji

    820-4924 high fan spin

    U8030 is looks so ugly some pads are burnt I've fixed it the system now works fine 😊 Thanks
  2. Soji

    820-4924 high fan spin

    5V_S0=5.191v 3v3_S0=0.350v 1v5_S0=1.515v
  3. Soji

    820-4924 high fan spin

    ALL_SYS_PWRGD is now 3.337v stable
  4. Soji

    820-4924 high fan spin

    L7310=0.033v L7320=0.032v L7430=1.360v L7630=1.046v L7520=5.1v L3095=0v L7130=12.65V 3v3_SUS=3.33V ALL_SYS_PWRGD=0.105V
  5. Soji

    820-4924 high fan spin

    I don't know what to check i know it's not normal
  6. Soji

    820-4924 high fan spin

    I tested the board only on the bench without connecting anything the fan starts in max speed
  7. Soji

    820-4924 high fan spin

    There is green light and turns to amber The fan spins very fast and the CPU is not getting hot PPBUS_G3H=12.61 PP3V42_G3H=3.420 PPVRTC_G3_OUT=3.2 PP5V_S5=5.0
  8. Soji

    820-01700 dead

    Hello, The board came in dead and there is a short on PPBUS_G3H I found the short on UA900 I replaced it from a donor board short gone System chimes with touch bar working but no display HELP!!!
  9. Soji

    820-01326-05 not coming up

    No history or any liquid sign PP2V5_NAND_SSD0=0.374 PP2V5_NAND_SSD1=0.375
  10. Soji

    820-01326-05 not coming up

    The board is drawing 20v All voltages are present Except PP2V5_NAND_SSD1 that reads 3.6v instead of 2.5 PP2V5_NAND_SSD0 is 2.5v. PP2V5_NAND_SSD1 is 3.6v.
  11. Soji

    820-00165 no screen backlight

    Measurement with known good screen PPVIN_S0_LCDBKLT_FET- 8.58v PP5V_S0 on u7701 is present PP3v3_s0 on u7701 is present SMBUS_PCH_CLK IS 3.3v SMBUS_PCH_DATA IS 3.4v PPVIN_s0sw_LCDBKLT IS 5v EDP_BKLT_PWM IS 3v Measure all the resistor around backlight ic with a known good one, they are all...
  12. Soji

    820-4924 came dead

    It came with not green light on MagSafe PPBUS_G3H-12.25 instead of 12.59 PP5v_s5 is not present. PP3v42_G3h is present PP1v2_s5_smc_vddc is present. so I decided to change smc, The amber light came Then ppbus_g3h now got partially shorted. d7005 stated heating up. I removed it d7005 The...
  13. Soji

    820-01958-A not coming up

    PPBUS_G3H is stable when battery is connected but restarts when the ammeter restart and 3v3_G3H_RTC is stable but restart when the ammeter restart and U7800 voltages too
  14. Soji

    820-01958-A not coming up

    No difference
  15. Soji

    820-01958-A not coming up

    No pulse at L7670 with 0.039 volts
  16. Soji

    820-01958-A not coming up

    The board did not enter DFU L7670 pin1=0.419,pin2=0.418 0.019volts L7690 pin1=0.386,pin2=0.386 3.3volts not stable L7030 pin1=0.444,pin2=0.444 5.0volts not stable
  17. Soji

    820-01958-A not coming up

    The board came in dead, no corrosion The ammeter shows 5v and restarts PPBUS_G3H=12.32 but pulsing PP3V3_G3H=3.3v pulsing also PP5V_g3s=not present PP1V8_G3S is short sometimes it's not I replaced Q8270 after I found out its getting hot on thermal camera still the ammeter shows 5v and restart
  18. Soji

    820-01814-01 dead amp meter flashing light

    I found a short on ppbus_g3h on precisely on u9080.hmmm I guess the nand flash is fried Any solution. Thanks
  19. Soji

    820-01814-01 dead amp meter flashing light

    Yes all the ports has the same behavior USBC_XB_CC1=0.984 USBC_XB_CC2=0.981 USBC_XA_CC1=0.986 USBC_XA_CC2=0.980
  20. Soji

    820-01814-01 dead amp meter flashing light

    The board came in dead, ammeter flashes light every 2sec,no display on ammeter. No shot on pp20v_usbc_xa_vbus
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