Search results

  1. N

    820-4923 - green light, no boot, no liquid damage

    Fixed, U8030, problem was that PP3v3_S0 was not being created by U8030
  2. N

    820-4923 - green light, no boot, no liquid damage

    took off q8150, im sorry for my stupidity, but i am not good at determining which power supply pulls a line down, i want to sound dumb and say PP3V3_S0,
  3. N

    820-4923 - green light, no boot, no liquid damage

    typed it wrong! :( 820-4924 sorry ALL_SYS_PWRGD - 0.10V DIODE mode to ground 0.23 RESISTANCE to ground 14.85 Kohms PP5V_S0: 5.15V PP3V3_S0: 0.30V U1950 PIN 1 - 0.10V PIN 2 - 0.30V PIN 3 - 0V PIN 4 - GRND PIN 5 - 0V PIN 6 - 0V PIN 7 - 0V PIN 8 - 3.41V
  4. N

    820-4923 - green light, no boot, no liquid damage

    Got this board, which i cant figure out, no story of what happened, no liquid damage, below some board info, Thank you guys in advance! PPBUS_G3H: 12.59V PP3V42_G3H: 3.431V PPVRTC_G3H: 3.336V PP5V_S5: 5.15V PP5V_S4: 5.15V PP5V_S3: 5.15V PP3V3_S5: 3.341V PP3V3_S4: 3.341V PP3V3_S3: 3.341V...
  5. N

    820-4924 short on ppbus, repaired and still no green light

    problem was D7010, it was a bit damaged for some reason, so im guessing it was not opening, another sucessful repair, thank you guys so much, specially you 2informaticos!!
  6. N

    820-4924 short on ppbus, repaired and still no green light

    q7010 are kohms, and D7012 is not found, could have been mis written ?
  7. N

    820-4924 short on ppbus, repaired and still no green light

    resistance to ground ppbus_g3h 0.62, 3V42 - 0.18V Q7010 pin 2,3 - 1.8V, Pin 5,6 1.9V, Pin 4 0.22V Resistance to ground------------ Q7010 pin 2,3 - 75.2, Pin 5,6 34.34, Pin 4 21.99 Known DC working, tried multiple ones
  8. N

    820-4924 short on ppbus, repaired and still no green light

    820-4924 PPbus_g3h was shorted at C7900 to ground, injected power, and it heated up, under microscope it was obvious damaged, D7005 Pin 1 -1.6v-1.7v, Pin 2 0v, pin 3 1.49v-1.6v D7005 on diod mode Pin 2 - 0.13, Pin 3 0.33 PPBUS_G3H: 0 V PP3V42_G3H: 0.18V PPVRTC_G3H: 0.0V PP5V_S5: 0.0V...
  9. N

    820-00840 - Showing X on battery, previously F4800 shorted by customer

    hey guys, i have a 820-00840 which im using 820-00875 as schematics and board view, Customer opened the laptop for some reason and shorted F4800 , replaced it and it worked fine, battery was showing X, so i thought maybe he just killed his battery, placed a Known working battery and still X, do...
  10. N

    820-00239 - Message of "System Management Controller" issues at self siagnostic

    820-00239 - Message of "System Management Controller" issues at self siagnostic hey guys, i have a 820-00239, computer came from someone replacing the display, few months went by and no issues, until now at the moment, the computer runs with fan loud, and when i ran diagnostic says SMC may...
  11. N

    820-00165 - no backlight

    i removed R7704 and ran wire from BKL_EN to PWM, and no backlight, did reset pram a few times, and nothing, also checked XW7720 , D7701 pin 1 to U7701 Pin 5, and there is continuity, so i think bridge integrity is ok, :(
  12. N

    820-00165 - no backlight

    PWM - 0.57 EN- 2.83 VDDIO- couldnt find it VIN- 8.58 and pardon my stupidity, but dont know how to check XW7720, i see it on the board view,
  13. N

    820-00165 - no backlight

    D7701 - 8.58V on both sides Known good Panel/display
  14. N

    820-00165 - no backlight

    hey guys, ' i have a 820-00165 that has no backlight i have already replaced backlight filter (F7700), have also replaced LP8550, LCD Connector, Q7707, and nearly everything else around there, and back of the board, and i know i should try to understand it, but i have spent hours on it and...
  15. N

    820-2915, & 820-2914 both do not detect WI-FI Card

    hey guys, please if anyone can help, i have 2 logic boards, 1 - 820-2915, 1 - 820-2914, they both have no liquid damage, never been repaired, only problem is they do not read wifi, does not detect WI-FI, any ideas where i should start i have already tried new known wifi cards,
  16. N

    820-3115 - Backlight issues

    Yes, there is image
  17. N

    820-3115 - Backlight issues

    i have a 820-3115 with backlight issues, i have never not been able to repair a macbook with backlight before, :( Replaced LCD Connector, backlight filter, and backlight fuse, seems like Q9706 wont open Q9706 pin 4 12.6V, pin 3 12.2 V LCD_BKLT_EN - 0V BKLT_PLT_RST_L - 3.30V any help
  18. N

    820-3476 - Black screen with backlight on after apple logo and loading screen

    820-3476 - board turns on, and it shows image, when i run from ssd it shows apple logo, it loads and then right when it suppose to switch from apple logo and black screen, it just stays black screen with the backlight, any idea what i should look for
  19. N

    820-2879 - PPBUS_G3H Shorted to ground

    so far C7280, U7840, C7330, and that all, but ppbus_g3h is still shorted Diode mode 0.035
Top