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  1. M

    820-00923 20V - 160mA no boot

    CPU_VR_EN_R present. Gave it back... I think CPU was dead too.
  2. M

    820-00923 20V - 160mA no boot

    Tried 3 BIOS and also to replace the BIOS chip, no success. I miss a working 820-00923 motherboard... Something else I can try?
  3. M

    Macbook A2337 820-02016 restore issue

    how do I install original macOS version from the power button menu of M1? starting with SHIFT + OPTION + COMMAND + R, doesn't work just boots into Macinstosh HD
  4. M

    Macbook A2337 820-02016 restore issue

    Got MacBook Air A2337 with prohibition symbol. Thought was easy only to restore in DFU and indeed worked. After testing everything looked good till I put the machine in standby, I see again the restore symbol on the screen. Basically I realised that I can use normal the machine but as soon I...
  5. M

    820-00923 20V - 160mA no boot

    Hello everyone. Got an 820-00923 for repair and can not find out how to fix it, without water damage PPbus_g3H 13V ALL_SYS_PWRGD 3.3V 3V3_S5 3.3V 3V3_SUS 3.3V L7270 1.04V PM_PWRBTN_L 3.3V PM_SLP_S3_L 3.3V PM_SLP_S4_L 3.3V pp1V8_s0 1.8V PPVCC_S0_CPU 0V PLT_RST_L 0V PPVCC_S0_CPU 0V...
  6. M

    820-00928 - no boot

    CPU core voltage (L7211) is present ~0.7V PLT_RESET_L is present 3.3V working on it I notice that the machine randomly goes back to 19V - 0.2A and than up to 19V - 0.75A. it only happens 1/2 times when I give power to the board. I will try BIOS.
  7. M

    820-00928 - no boot

    Hello everybody I'm trying to fix an 820-00928 board. Maybe this is the weird board ever and in my opinion will be a no fix, but I would like to have an opinion from experts. The CPU and GPU gets hot, and machines takes up to 20V - 0.89. All the important signal are there at the same time...
  8. M

    820-01700 U9400

    Hello everyone I actually read on the forum that is possible to fix ssd shorted on the line PP2V5_NAND_SSD0. I had quite an high number of SSD short with no repair. mostly of them 15inch board o 16 inch board from 2017 - 2019. So my question is if there is a solutions to this and is possible...
  9. M

    820-01700 U9200 shorted

    can I know from 2informaticos you which are in component number of the ssd ROM and Controller? does it work if the machine has less or more capacity?
  10. M

    820-00281 suck at 5V - 0.01A

    replaced U7000 and fixed it. Thanks anyway :)
  11. M

    820-00281 suck at 5V - 0.01A

    I knew the 87W charger information but thanks. I was already using 96W. PP3V3_g3H is 3.3V PPBUS_G3H is 0.25V
  12. M

    820-00281 suck at 5V - 0.01A

    Hello everyone, I'm new to this forum. I got an A1707 stuck in 5V and 0.1 A I do daily motherboard repair, but I really have to fix this one for data recovery so there is no better place to get replies than Rossmann forum. I have PP3V3_g3H 3.3V so present, and none of the CD3215 has loop going...
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