Search results

  1. L

    A1286, 820-2850-A , no water damage, no detect battery...

    yes...USB mouse light up on boot board
  2. L

    A1286, 820-2850-A , no water damage, no detect battery...

    Hello! I have green light , fan high speed, no chime,no video. PPBUS_G3H OK PPBUS_CPU_IMVP_ISNS OK PPDCIN_G3H OK PP3V42_G3H OK PPVCORE_CPU ok PPVCORE_GPU OK PP3V3_SW_LCD voltage= 0 Volt. F9800 is OK with 12 Volts. LCD_BKLT_EN = 0 Volt..... LVDS_DDC_CLK = 3.3V...
  3. L

    A1286, 820-2850-A , no water damage, no detect battery...

    After few minutes, PP3_G3H very low...=0.40V. Green light ok, no fan, no boot now.
  4. L

    A1286, 820-2850-A , no water damage, no detect battery...

    Replace C7015, R7005 & U7000. Green light reappear U7000: PIN 17=12.20V PIN 18=12.20V PIN 27=16.55V PIN 28=14.55V Replace F7040: green light ok, fan boot ok.... U7000: PIN 17=12.22V PIN 18=12.22V PIN 27=16.70V PIN 28=16.75V
  5. L

    A1286, 820-2850-A , no water damage, no detect battery...

    R7005 & U7000 replace.... I have desoldering C7015 and the capacitance = 1010pF, normaly 470pF...., must I replace too?( all SMD ceramic capacitors around U7000 are ok except C7015 ...)
  6. L

    A1286, 820-2850-A , no water damage, no detect battery...

    So now PPDCIN_G3H was low voltage, I decide to desoldering F7040 (always low voltage) I desolder U7000, and PPDCIN_G3H= 17V Now mesures of resistance around U7000: So I must replace R5280, R5281 (1.985Ω)???? replace R7015(56.5KΩ)? replace R7005(4.81KΩ)?
  7. L

    A1286, 820-2850-A , no water damage, no detect battery...

    So I have resoldering components..... So I mesure rails.... PPBUS_G3H=1.60V PPBUS_CPU_IMVP_ISNS= 0.60V and I mesure PPDCIN_G3H: (no boot, no fan...)
  8. L

    A1286, 820-2850-A , no water damage, no detect battery...

    thank you for your patience...I learn every day....and I really want understand....
  9. L

    A1286, 820-2850-A , no water damage, no detect battery...

    OMG.......:(...... Now I realize. So sorry for my mulimeter (and make you lose time, I hope you have a good laugh !!!)!!!!!!!!!!!!!!!!! Now I never it again, so applied power with multimeter on diode mode.................. **************************************************...
  10. L

    A1286, 820-2850-A , no water damage, no detect battery...

    yes, with magsafe, power applied......
  11. L

    A1286, 820-2850-A , no water damage, no detect battery...

    PPDCIN_G3H short to ground with magsafe, I have desoldering Q7080,D7005,(+U7000,D6950). Pin 5.6.7.8 of Q7080 have Short to GND. I have no idea why PPDCIN_G3H have short, I try to follow the pdf, inspected the board..... I think that the short to gnd is beetween F6905 and Q7080(pin...
  12. L

    A1286, 820-2850-A , no water damage, no detect battery...

    Hello , I have a problem with SMBUS_SMC_BSA_SDA have short to ground with magsafe connected..... The macboook pro boot to OSX , but no detect battery.(battery is new). I have low voltage (with magsafe only) on Pin 2 of R5280=0,60V to 0V, I decide to desoldering R5280. R5280 & R5281 are Ok...
  13. L

    820-3115 B- no liquid damage-No Boot-i5

    ok lol!!!!......................:confused: sorry....
  14. L

    820-3115 B- no liquid damage-No Boot-i5

    I have short to ground about CPU_VCCSASENSE: Short to ground about VCCASO_CS_P & VCCASO_ AGND
  15. L

    820-3115 B- no liquid damage-No Boot-i5

    I have short to ground about PP1V05_S0:
  16. L

    820-3115 B- no liquid damage-No Boot-i5

    Fix Q7035(short to ground). magsafe ok , green light ok, without battery, PPBUS_G3H short to GND. I desoldering F7040 : PPBUS_G3H don't have short to GND. R7140 Short to ground, PIN 2:
  17. L

    820-3115 B- no liquid damage-No Boot-i5

    I have soldering new ISL6259, and in fact this the magsafe the problem, I have try with magsafe 85W and other 65W, and green light appear......(sorry for that) I have replace F7040 Now I try to boot inside MBP, have green light No boot with battery(no battery indicator), no boot with magsafe...
Top