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  1. J

    820-4924-A no video

    Sorry DP_INT_HPD: 3.3V (after a moment: 0V) Yes, I do get green/orange light with the burned jack and of couser with the good one to.
  2. J

    820-4924-A no video

    See attached the burnt chip on the jack. When chimes : PP5VR3V3_SW_LCD: 5.2V (after a moment: 0V) LCD_HPD_CONN: 3.3V (after a moment: 0V)
  3. J

    820-4924-A no video

    Forgot to mention: No liquid damage, just some dust and crap un some areas on the SMC side. (does not look like corrosion)
  4. J

    820-4924-A no video

    The Macbook came in for no video issue. I was able to get external video. I got 0V on backlight and screen voltage. When took out the board and connected to start measuring one the ICs on the Jack got burned, no sure why. I am testing with another jack now... Now I am not able to test the...
  5. J

    820-00928-A Stuck on 5V

    DIODE READINGS LDOs from U3100 PP3V3_UPC_XA_LDO: 0.493 PP1V8_UPC_XA_LDOA: 0.509 PP1V8_UPC_XA_LDOD: 0.472 PP1V1_UPC_XA_LDO_BMC: 0.500 LDOs from U3200 PP3V3_UPC_XB_LDO: 0.496V PP1V8_UPC_XB_LDOA: 0.509V PP1V8_UPC_XB_LDOD: 0.473 PP1V1_UPC_XB_LDO_BMC: 0.496 LDOs from UB300 PP3V3_UPC_TA_LDO: 0.506V...
  6. J

    820-00928-A Stuck on 5V

    UB300 PP3V3_UPC_TA_LDO: 3.3v PP1V8_UPC_TA_LDOA: 1.8v PP1V8_UPC_TA_LDOD: 1.8v PP1V1_UPC_TA_LDO_BMC: 0v
  7. J

    820-00928-A Stuck on 5V

    Hello. I have replaced both CD3215 that had liquid damage but same issue. The USB ICs that I replaced loop on 5V. The other USBC port (assumed ok) turn on and then off the USB C Metter. Any idea?
  8. J

    820-02020-A Stuck 5V

    I mentioned: PP3V8_AON: 0V P3V8AON_PWR_EN_R: 5V (on R5710)
  9. J

    820-02020-A Stuck 5V

    PP3V8_AON: 0.186V (diode mode) and 0.6KOwhm to ground
  10. J

    820-02020-A Stuck 5V

    PPBUS_AON: 12.26V PPBUS_VMAIN_VIN_ISNS: 12.26V P3V8AON_PWR_EN_R: 5V
  11. J

    820-02020-A Stuck 5V

    Hello I have this clean board stuck on 5V -USBC1 takes 0.165A -USBC2 takes 0.145A Not sure how to start with this M1. What is the equivalent to PP3V3_G3H? PP3V8_AON: 0V
  12. J

    820-4924-A no PP5V_S3

    Same issue -All "SPI Bus Series Termination" resistors in page 47 are ok. (All 22ohms) -tried this bios your provided and same https://drive.google.com/file/d/18m-YhIlNhX4Uf5njH8KHmRGZelvEXnD_/view Any idea? Thanks!
  13. J

    820-4924-A no PP5V_S3

    I replaced the SMC for one of the same model board but same issue. -No video on screen -No external video -Takes 800mA -CPU gets hot -Tried other BIOS (from the donor board) and same -No USB activity detected. Any idea?
  14. J

    820-3126-A No video

    Hello iMac 2011 Reballed the GPU 1 year ago, today returned because of distorted video so I reballed the GPU again. Now the imac wont boot, no video. LED501 is on. Fans spin super fast. Is there a way to know if the GPU is working? Thanks
  15. J

    820-01236-A only work with Mojave

    Hello iMac A2115 2019 with board 820-01236-A, A few months ago i received this iMac, wont turn on. It was a BIOS issue, so I reflashed the BIOS with a file found online. I just changed the Serial number section on the file and the iMac worked okay. It came back and wont boot. This imac has...
  16. J

    820-00928-A Stuck on 5V

    I am waiting the CD3215 chips to replace them but my customer wants me to replace the complete board. How can I know whats the capacity of the SSD on these boards? What is SSD chip? I was able to find a marking on the board saying the speed the CPU and VRAM but I cannot fin the specs for the...
  17. J

    820-4924-A no PP5V_S3

    I replaced the SMC (from a 820-3476 ) and now I get the: -PP5V_S3: 5V -All big coils voltages (including CPU ones) -PPVIN_S0SW_LCDBKLT: 0V -TBTBST_BOOST: 0V -the board takes 300mA -power button responds -no video Do you think this can be an issue of the SMC no beign from the same model?
  18. J

    820-4924-A no PP5V_S3

    Could I use one from a 820-3476?
  19. J

    820-4924-A no PP5V_S3

    I do not have a known good battery to test at the moment. Customers battery seems to be charging but no power. Tested with Original 85W and customers battery and no power. SMC Bypass same problem. Should I try ultrasonic cleaner? (Since I found some corrosion around SMC)
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