Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-C controller issue.
Conclusion : controller does not enable u38/u227 via CCG4_VBUS_C_CTRL_P1, CCG4_VBUS_C_CTRL_P2 signals, just take 3.3volts rail and run a jumper towards pin 9 (of u38/u227 corresponding as which port you want to use as charger). My steps what i did to bring it back to life :
Found out the USB TYPE C controller had a short, replaced, flashed with c920 cypd4226 firmware, ran a jumper, that's it. You can get errors from flasher, just install Visual Studio x86, reboot and try again.
Originally posted by Lukosiukas
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Found out the USB TYPE C controller had a short, replaced, flashed with c920 cypd4226 firmware, ran a jumper, that's it. You can get errors from flasher, just install Visual Studio x86, reboot and try again.
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