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  1. T

    820-00239 cd32 spill

    Its a tough one. Im not familiar with this board model. Thanks for your input.
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    820-00239 cd32 spill

    I have tried a few that poster said were fully tested but with the same issues.There may be some signals missing that Im not aware of.
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    820-00239 cd32 spill

    No none at all
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    820-00239 cd32 spill

    Possibly but it looks like it was broken off rather than desoldered. I have gone over the board with the microscope and I cannot see any other issues. https://drive.google.com/file/d/1ugKI0CJmnJ-xhNDMRrhAatSjJ_uzHFGl/view?usp=sharing Here is the original dump if you could look over it if you...
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    820-00239 cd32 spill

    I found one that supposedly tested 100% but now the unit draws 550ma then drops to 450ma with the same result ie no usb activity and no external or lcd output. I dumped the original bios 2 times as I usually do and when I write it back now the unit only draws 120ma. I also noticed that l4901...
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    820-00239 cd32 spill

    U4900 /fl4900 Im not getting any 16v out here is this only in certain conditions?
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    820-00239 cd32 spill

    Any ideas where to go from here?
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    820-00239 cd32 spill

    Should I be getting voltage on L7410/7420/7430 ?. I have tried a couple of different efi files but still same.
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    820-00239 cd32 spill

    Changes in what way? also do you have a link to known good bios?
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    820-00239 cd32 spill

    Not that I can see. I had it on the oscope for a bit.
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    820-00239 cd32 spill

    Just spillage around U3200. L7210/L7220 has 1.08v PPVCC_S0_CPU has 1.08v
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    820-00239 cd32 spill

    I replaced the cd32 and now get 20.5v 620ma no display or usb activity then it drops to 540ma. Cpu gets warm. Im not familiar with these boards . Where to start?
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    820-00239 13" macbook pro touchbar model SSd missing

    Sorry that was a typo. Is there anything else I can check?. Is it possible to replace the nand ?. I dont have donor for this board, possible to buy new nand?. also which ic number do you suspect?.
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    820-00239 13" macbook pro touchbar model SSd missing

    I replaced U9300 again and also U9400 now getting SSD voltages. L9320 p0v9_reg_sw = .9v L9321 P0v9_reg_swl = .9v L9300 p0v9_fixed_SWl = .9v C9356 pp1v2_sd_cold = 1.2v L9330 p1v2_hot_sw = 1.2v C9335 p1v2_ssd_hot = 1.2v L9340 p1v8_cold_sw0 = 1.8v L9341 p1v8_cold_sw1 = 1.8v storage_lb_en = 3.3v...
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    820-00239 13" macbook pro touchbar model SSd missing

    I replaced U9300 now PP1V2_SSD_HOT short is gone but only ssd voltages I get is pp3v3_s5_ssd 3.3v. STORAGE_LB_EN: 3.3V SSD_RESET_LB_L: 3.3V LPSR_EN_LB_L: 3.3V SSD_BOOT_LB_L: 1.7V
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    820-3435-B not detecting battery

    Thanks for your input I have ordered a new battery and will work from there.
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    820-3435-B not detecting battery

    As this had water damage as previous mentioned I wanted to make sure board was reading ok before buying a battery as they are expensive and I dont see many 11" mac air's.
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