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  1. HeyWatchOutDude

    820-00850 (A1989) - PPBUS_G3H looping

    Any idea what else could be wrong? Edit: - 5V / 0.16A | PPBUS_G3H = 12.27V - 19.4V / 0.04A | PPBUS_G3H is slowly going down from 5V to 0V Did you ever seen such a behaviour?
  2. HeyWatchOutDude

    20V / 0-5mA | 820-00850 (A1989)

    No everything looks fine. I noticed that the diode value of the F7000 is 0.350 … compared with a good one it’s 0.460.
  3. HeyWatchOutDude

    20V / 0-5mA | 820-00850 (A1989)

    History: Water damage (didnt found any signs), one CD3215 area looked like that: Trace on C3115 to PIN12 was broken, fixed it with a wire (PP1V8_SLPS2R is present):
  4. HeyWatchOutDude

    820-00850 (A1989) - Booting successfull - Left USB-C ports issue

    Yes 5.2V on both pins. I have removed L3500 and found a short on PP5V_S4_X_USBC, removed the CD3215 ... short is still present.
  5. HeyWatchOutDude

    820-00850 (A1989) - Booting successfull - Left USB-C ports issue

    No voltage on L3500 (P5VUSBC_X_LL / P5VUSBC_X_R) - USB device is plugged in. 5.2V on LB700 (P5VUSBC_T_LL / P5VUSBC_T_R) - USB device is plugged in. Note: U3500 is getting 5.2V on PP5V_USBC_X_VCC, so maybe U3500 is bad?
  6. HeyWatchOutDude

    820-00850 (A1989) - Booting successfull - Left USB-C ports issue

    Hi, I have here an A1989 where the left USB-C ports are not recogizing any peripherals - charging is working - right side no issues. Could it be that the THB IC is damaged or corroded? (Should I reflow the IC?) Note: The MacBook was water damaged in that area, (U3200 was bad)
  7. HeyWatchOutDude

    20V / 0-5mA | 820-00850 (A1989)

    What do you mean with " points to problems with some secondary supply " ? How to bypass T2 chip?
  8. HeyWatchOutDude

    20V / 0-5mA | 820-00850 (A1989)

    Sry for my late reply .... L9080 = 0.373 L9020 = 0.333 PPBUS_G3H = 12.28V when USB-C output is 5V / 0.16A PPBUS_G3H = 1.2V when USB-C output changes to 19.4V / 0.05A Bad ISL?
  9. HeyWatchOutDude

    20V / 0-5mA | 820-00850 (A1989)

    Values = diode mode L7220 = 0.004-5 L7210 = 0.004-5 L7410 = 0.004-5 L7420 = 0.004-5 L7430 = 0.004-5 L7270 = 0.022 L8102 = 0.120 L7702 = 0.110 L8100 = 0.200 LB700 = 0.495 L7600 = 0.390 L7660 = 0.410 L7030 = 0.495 L8410 = 0.850 L3500 = 0.380 L7220, L7210, L7410, L7420, L7430 .. I assume they are...
  10. HeyWatchOutDude

    20V / 0-5mA | 820-00850 (A1989)

    All 4 ports same behavior. I noticed that PP5V_G3S isnt stable. Note: I tried already T2 restore/review no success always ends with an error.
  11. HeyWatchOutDude

    20V / 0-5mA | 820-00850 (A1989)

    Hi, every had such a strange behaviour on an A1989?
  12. HeyWatchOutDude

    820-00850 (A1989) - PPBUS_G3H looping

    Hi, I have successfully changed the U7800 ... sadly the device is still acting weird. Why does it keep restarting? Any idea? Video:
  13. HeyWatchOutDude

    820-00850 (A1989) - PPBUS_G3H looping

    Already tried that, same AC2 error message.
  14. HeyWatchOutDude

    820-00850 (A1989) - PPBUS_G3H looping

    Doesn’t work. Edit: The USB-C voltage meter screen is only turning on/off when I have the cable for DFU mode restore connected to my MacBook (AC2). Any idea?
  15. HeyWatchOutDude

    820-00850 (A1989) - PPBUS_G3H looping

    Yeah same behavior on all four ports. How to do a SMC bypass on a T2 board?
  16. HeyWatchOutDude

    820-00850 (A1989) - PPBUS_G3H looping

    yeah it’s an OEM one. The USB-C adapter screen is just flashing (on / off) …. And no G3S voltages. Edit: What is that noise? (Last couple of seconds of the video) It occurred after the USB-C went off.
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