(347) 552-2258 [email protected]

Search results

  1. Y

    820-4924 no image and no backlight

    done, I found 3 broken traces. thanks
  2. Y

    820-3330 no image

    820-3330, no image on the screen, PP3V3_SW_LCD_UF 0v GPUVCORE_PGOOD 0v PPVCORE_GPU 0.9v PM_ALL_GPU_PGOOD 0v no image on the external video, I think it is a d GPU. I was thinking N13P-GT-Z-A2 don't die...
  3. Y

    820-4924 no image and no backlight

    820-4942 water damaged no image no backlight there is image on the external screen the water damage was in the backside of J8300, on U5620, U8330 ... I found a broken trace on J8300:3 I did a jumper. PP5VR3V3_SW_LCD_UF 0v I replaced u8300. with no result
  4. Y

    A1398 emc 2909, 820-00138 overheating.

    I have this MacBook. Without using the MacBook, the cpu is 40° and the fan spinning at 1000rpm When it is in hard use(YouTube 4k, Photoshop...) the cpu go to 100°c but the fan are still spinning at 1000rpm, I think it is not normal. Any ideas... Thanks
  5. Y

    820-3437, it try to start

    when i trigger SMC_ONOFF_L no pules on the big coils. but already the board try to boot, then here there is pulses on the big coils "as ALL_SYS_PWRGD too." there is a coil for this signal? by the way, it is zero
  6. Y

    820-3437, it try to start

    PM_RSMRST_L is always high PM_SLP_S5_L is 0 and then go to high 0.8v PM_SLP_S4_L is 0 and then go to high 0.8v PM_SLP_S3_L is 0 and then go to high 0.8v PCH_PM_SLP_S0_L Is always high
  7. Y

    820-3437, it try to start

    It consumes 0.02a, then sometimes it jumps to 0.14a PPBUS_G3H 8.56v PPVRTC_G3H 3.3v PP5V_S5 5.03v PP3V3_SUS 3.3V PP5V_S4RS3 0v SCL/SDA resistance lines of battery bus 0.565. SCL/SDA voltage lines of battery bus 3.3v. SMC/PM_BATLOW_L 3.3v SMC_ADAPTER_EN 3.3v SMC_PM_G2_EN. 3.3v PM_PWRBTN_L...
  8. Y

    820-00165 no green light

    great, it was the Zener diode. thanks
  9. Y

    820-00165 no green light

    820-00165 missing pp3v42_g3h PPDCIN_G3H 16.5v by checking q7010's output pin 1, PPDCIN_G3H_ISOL is 0v. R7012, R7010, R7011 have their good values I replaced Q7010 no result
  10. Y

    820-3332, i think GPU problem

    820-3332 boot to the logo then restart. i replaced the solder of U8900, didn't work, then I replaced the GPU, it booted once and it had PPVCORE_GPU then it keeps restarting any ideas ?
  11. Y

    820-4924 no PP3V3_S5

    ok, C3208 was shorted i found L7560 shorted into ground on diode mode. thanks for your help
  12. Y

    820-4924 no PP3V3_S5

    U7501; pins 23 PPVIN_S5_HS_OTHER3V3 12.56 12 SMC_PM_G2_EN 3.3v 13 P5VP3V3_VREF2 1.9v 22 P5VP3V3_VREG3 3.2v 29 PP5V_S5 5.0v 21 S5_PWR_EN 3.4 v already replaced u7501 and q7560
  13. Y

    820-4924 no PP3V3_S5

    I have a board 820-4924 no power, consuming 0.01A PPBUS_G3H = 12.56v PP5V_S5 = 5v PP3V3_S5 = 0V
  14. Y

    820-2936, no image on the screen

    no video on the external lcd PPVCORE_S0_CPU 1.15v the board don't boot but stuck in s0 state
  15. Y

    820-3662-A suddenly shutdown

    Sorry, it is 820-3662-A there is no FDMF6808 chips. I changed the battery but it still shut down suddenly. what I have to try next?
  16. Y

    820-2936, no image on the screen

    820-2936, I don't have it's history it goes to S0 state, PPVCORE_S0_CPU is present. PP3V3_LCDVDD_SW 0v LCD_IG_PWR_EN 0v I am not sure the board is on, but it is in S0 state. what I have to check next? thank you
  17. Y

    820-3662-A suddenly shutdown

    this board suddenly shut down when it is on battery, but on the charger, it works fine. I think it is a battery problem... does anyone have a similar case?
  18. Y

    820-00165 can't install os

    This board don't accept osx always an error in picture. When I boot from another USB osx it boot, but it suddenly shut down
  19. Y

    820-00850 no power no water damage

    Yes, it was T2 problem
  20. Y

    820-00850 no power no water damage

    I have an 820-00850 no power, USB-c meter 20v0 0amp. PPBUS_G3H 11.34V, I think this is the problem I was looking for smc_reset_l to check if the SMC is working or not but I didn't find it.
Top