Recent content by Fizzl92

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    820-00045 charger tripping

    Are there still things I could try here?
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    820-00045 charger tripping

    0.372V. Identical to my working board.
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    820-00045 charger tripping

    P_IN =5.2V ACIN = 1.3V SMC_RST_IN = 0V SMC_RST* = 0.6V VDDP = 5V VDDA = 5V VR_AON = 3V VR1_3P3 = 0V VCC_VR1 = 5.2V LDO_3P0 = 3V LDO_5P0 = 5V AMON = 0V ACOK = 0V
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    820-00045 charger tripping

    Both 3.6 Ohms. My Probes alone measure 1.5 Ohms.
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    820-00045 charger tripping

    0V. Q7110 is closed. Current sensing is <6Ohms including my probes. SMC_RESET_L = 0.61V. Diode mode on SMC_RESET_L is 0.56V = identical to my good board. This points to U7100?
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    820-00045 charger tripping

    I checked all signals at J4700. File attached for anyone who might need those values from a good board... The differences pointed to U4490. I replaced it and Pin 2 was burned and part of the IC was welded to the pad. I fixed all of that and now its back to @ 5V 0A stable. As I already replaced...
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    820-00045 charger tripping

    Sorry. I tested the same internal flex cable together with my charger and usb-c cable on my 2nd „braindead“ board and ist working fine (20V and charging).
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    820-00045 charger tripping

    I‘m using an original charger and cable. Both work with an identical device with dead CPU (create 20V and charge) and also with other different usb-c devices.
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    820-00045 charger tripping

    Still the same behavior.
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    820-00045 charger tripping

    "Only" U4600, U4470 and U4650 were definitely bad. U4700, U4780 and U7100 were just my next step to try to get the USB communication fixed. 3V3_G3H diode mode is 0.373V, voltage is 0V. With F7140 removed, C7143 Voltage jumps to ~6,6V (maybe higher as my meter might be to slow...) when the...
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    820-00045 charger tripping

    Hello, this 00045 was water damaged. No obvious signs of liquid. I noticed that U4600 had a small hole in it. I replaced it, fixed a short on 3V3_AON by replacing U4470 and U4650 and changed U4700, U4780 and U7100 but no change so far. My USBC-meter turns on for a second but as soon as it...
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    820-01814 no USB activity

    Thank you. All 4 ports were dead. The CC-lines were the issue. DZ3301 was damaged (mechanically broken). My guess is that 2 ports were dead because the one DC3215 was shorted. After replacing it, all 4 could communicate again, and therefore all 4 were dead because of the CC-line issue. Now all 4...
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    820-01814 no USB activity

    Hello, I'm working on a 820-01814 that was water damaged. I got it with U3100/U3200 area fluxed and both ports not turning on USB-C-meter at all. The other two ports were stuck at 5V/400mA. U3200 was getting hot. This board raise a few questions for me regarding CD5215s. My schematic states that...
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    820-2610 C7771 voltage still .3V with C7771 replaced.

    Thank you. Then I don't need to worry to have missed something obvious. I'll replace some more components around U7750 and see if anything changes.
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