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  1. R

    820-3299

    no pulse PP12V_S0_FET & PM_SLP_S4_L when i push on the power button I check the signal SMC_ONOF_L fall down when i push the button.
  2. R

    820-3299

    Hi, i have this imac with only one led1 i find some component broken like R5335, U5420, U9720 (when i remove this last PP5V_S0 in diode mode 0,020 became 0,250) for the last i can't find the reference REF3333, is not the reference i think. i would like to find in other board but when i search...
  3. R

    820-3332 video problem

    sorry but i can't find it on the forum. do you have a link please? thanks
  4. R

    820-3332 video problem

    ok thanks, if i want disable discrete GPU is with medusa board? or another solution?
  5. R

    820-3332 video problem

    Hi, i have this board no liquid with this screen in attach file i have reflow U8900 but same problem, is it bad GPU? thanks
  6. R

    820-00850 stay USB-C at 5V

    yes i read on just U3200, i change U3200 and now the mac work. Thanks for the chip firmware, i understand now for C00 & other.
  7. R

    820-00850 stay USB-C at 5V

    In diode mode LDO_3V3= 0,008 LDO_1V8A= 0,511 LDO_1V8D=0,028 LDO_BMC=0,5
  8. R

    820-00850 stay USB-C at 5V

    thanks for schematic and boardview. yes all 4 ports stay at 5V. i check in diode LDO output and post after. U3200 is hot when connect on all ports. if i need to change, can i take on another board, i haven't this board to pick this component.
  9. R

    820-00850 stay USB-C at 5V

    Hi, i have this board 820-00850, the issue the usb-c input stay at 5V (0,200A->0,400A). i have PPBUS at 12,3V but cycling (9V to 12,3V) i haven't the board file, i use the board file to 820-01041 but it's not same. have you this file board? what can i check to same my problem? i have this chip...
  10. R

    820-3115 fan speed one turn and off

    i check all SPI resistors seems all good and trace too. I check with scope all the signals on U6100, all signal communicate but not on pin 3 & 7. is it normal? i change the bios with good bios same problem and i clean me of the original with cmizapper same.
  11. R

    820-3115 fan speed one turn and off

    I check all voltage on page 71/72, all pulse at the good voltage but after fall, some voltage don't fall at 0v. No short find on this voltage. Yes i keep the smc on other same board 3115.
  12. R

    820-3115 fan speed one turn and off

    sorry, i have 0V, no pulse. U2650 pin 4 PM_S0_PGOOD=0V no pulse U2660 pin 4 SYS_PWROK_R=0V no pulse
  13. R

    820-3115 fan speed one turn and off

    acowan the fan start normally and stop after 1second
  14. R

    820-3115 fan speed one turn and off

    R7402 = 150K R7403=182K L7330 = 1,5V and fall L7260 = 5V and fall L7220 = 3V3 always L7630 = 1V and fall L7100 =1V and fall L7550 = nothing L7510 = nothing L7520 = nothing SMC Bypass not work, same problem turn fan normally and shutdown
  15. R

    820-3115 fan speed one turn and off

    Hi, i have this board liquid spill near SMC. I put the board in a ultra sonic cleaner, now i clean but can start, just fan and stop. i change the SMC, U7000 (because PPBUS_G3H is low 12,26, now 12,57). i try the board with original charger 85W. I have the all_SYS_PWGD=3,34V just few seconds and...
  16. R

    820-00239 reboot intermittent when battery under 60%

    no the mac don't work well on battery, make kernel panic when you use it on battery. I use heaven to stress more quickly the mac for make the problem. heaven work well on other mac on battery.
  17. R

    820-00239 reboot intermittent when battery under 60%

    i test with an another original battery of another macbook pro same year. I have a kernel panic when i run heaven on battery (the level of battery is not important) i have the problem at 75%. When i run heaven in power supply no problem. when the problem come, the screen become black and i have...
  18. R

    820-00239 reboot intermittent when battery under 60%

    ok i understand but what can i check to look why the board make kernel panic when the level battery come under 60%.
  19. R

    820-00239 reboot intermittent when battery under 60%

    Hi, this board receive liquid, not work. the USB C connector JB5000 is burn, i remove it and the board start and work well on the other USBC port. but if i unplug the board, the mac work well above 60% of battery. when the battery is low, I have PPBUS_G3H at 11V, is it normal? with power supply...
  20. R

    820-00165 fan full speed

    sorry for the long reply. i have try to change all flex and trackpad/battery, i have always the same problem. The mac is very very slow. i look the board seems clean but something it's wrong on this board.
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