Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]

Announcement

Collapse
No announcement yet.

A2159 - 820-01598 20V 0.4A no sign of life

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
    #1

    A2159 - 820-01598 20V 0.4A no sign of life

    Hi everyone,

    I'm fairly new to board repair and I'm trying to repair a Macbook Pro A2159 which seems to had some water damage.
    My USB-C Amp meter shows 20V and 0.4A with the motherboard disconnected (it kind of goes up and down from 0.4A to 0.035A after around 30 seconds then back to 0.4A) and 20V and at least 1A (to 2-2.5A) when the motherboard is connected to everything inside the case.
    The CPU heats but that's the only sign of life the mac is showing.
    I use the original 60W charger.

    I tried to figure out a way to find the problem before posting here so I have some values but honestly I'm not sure where to go from now to find the problem...

    I didn't try a DFU as I'm not sure about the problem and didn't want to make more damages without having an idea of the original problem.


    PP3V3_G3H_RTC 3.3V
    PP3V3_G3H 3.3V
    PP1V8_SLPS2R 1.8V
    PP1V1_SLPS2R 1.1V
    PP0V8_SLPS2R 0.8V
    PP0V9 0.9V
    PPVDDCPUSRAM_AWAKE 0.8V
    PP1V1_SLPDDR 1.1V
    PP3V_G3H_RTC 3V
    PP5V_G3S 5V
    PP3V3_G3S 3.3V
    PP1V8_G3S 1.8V
    PP2V5_NAND_SSD0 2.5V
    PP3V3_S5 3.3V
    PPVCC_S0_CPU 0.72V
    PPVCCSA_S0_CPU 0.82V (not stable)
    PPVCCGT_S0_CPU 0.71V


    I found no shorts or stuff like that.

    If any of you would have the patience to help newbie me in the process, I'd really appreciate!
    Tags: None
    #2
    Re: A2159 - 820-01598 20V 0.4A no sign of life

    Dfu brother

    Comment

      #3
      Re: A2159 - 820-01598 20V 0.4A no sign of life

      Originally posted by oemelectronic View Post
      Dfu brother
      I tried DFU but it failed with the following message :

      (AMRestoreErrorDomain erreur 9 - Failed to receive message from device, might be connection problem with USB host. (Communication error, possibly USB disconnection)) [AMRestoreErrorDomain – 0x9 (9)]

      Also the only other functionnal mac I have is not with the same OS has the one I want to repair, so I guess it's a problem for the DFU?

      Any one would have another solution to try?

      Comment

        #4
        Re: A2159 - 820-01598 20V 0.4A no sign of life

        Test with another known good usb cable. Use as short as possible.

        Comment

          #5
          Re: A2159 - 820-01598 20V 0.4A no sign of life

          Originally posted by mon2 View Post
          Test with another known good usb cable. Use as short as possible.
          I tried with 2 different USB cables (including the original one from the apple charger), I have a third (shorter one) maybe I can retry with.

          Comment

            #6
            Re: A2159 - 820-01598 20V 0.4A no sign of life

            Still didn't work with 3 different USB-C cables.
            May it come from the fact that I don't have the same OS version on both Mac?

            Comment

            Previous template Next
            Working...
            X