Component U3 on a Duet WiFi 2

[FelixH]

Hi all,

recently a Duet WiFi 2 Board died on me (full disclosure, a clone board). I traced the problem down to the component U3, which was getting really hot when powering the board with USB (with Vin, the board was totally dead).

Does somebody know what this component does and if I could get a replacement somewhere?

Thanks in advance!

[droftarts]

@FelixH It is the 5V regulator. See https://docs.duet3d.com/en/User_manual/Troubleshooting/Parts#voltage-regulators-1

U3 - 5V Duet 2 WiFi / Ethernet / Maestro: A4403GEUTR-T (tricky to solder QFN chip)

Ian

[FelixH]

@droftarts ok, so a 5v voltage regulator. Makes total sense that the board doesn't work if it is broken. I will try to get a replacement and hope for the best

thanks!