a2338 2020 Macbook Pro liquid damaged won't turn on- weird issue

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  • bigbadbios
    New Member
    • May 2021
    • 8
    • United States
    #1

    a2338 2020 Macbook Pro liquid damaged won't turn on- weird issue

    Hi,
    I am trying to fix this liquid damaged 2020 Macbook pro and I noticed something weird.
    When I push on/around the renesas 501cr0b IC, which appears to be a clock generator/ multiplier, If I apply lot of pressure, the device will reach 19.9 volts and seems to be trying to work.
    I have thoroughly reflowed that area and completely removed that chip (there was some liquid stain in that area) but no help. I have just 5v 0a unless I apply the pressure.
    Your help is GREATLY appreciated. Thanks!
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 13830
      • Canada
      #2
      Best for you to post some clear pics of the reworked part. In general, flux the part well and enough heat and low air pressure to melt the solder and allow the pcb pads to meet the device pads like melted butter.

        Comment

        • bigbadbios
          New Member
          • May 2021
          • 8
          • United States
          #3
          Click image for larger version Name: IMG_0498[1].jpg Views: 0 Size: 1.48 MB ID: 3332719
          Originally posted by mon2
          Best for you to post some clear pics of the reworked part. In general, flux the part well and enough heat and low air pressure to melt the solder and allow the pcb pads to meet the device pads like melted butter.
          Thank you for your response.
          It is U5700 on the schematic, the board is 820-02020-a.
          I have went as far as to remove the chip entirely and reseat with a river of flux, still no go. Also reflowed the areas around it on that side and directly under on the opposite.

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