Origin USB dock - no 5V on USB

[tony359]

Hi all

I'm using a USB-C dock made by origin. It has a few USB A ports, two have stopped delivering 5V.

I opened the unit and found a USB controller made by Realtek, which controls whether the 5V is being delivered to the ports by lowering some pins which reach a couple of transistors which turn on or off the power.

The IC in question is RTS5412S. I can find the data sheet for the RTS5411 but not the 5412.

I see the transistors (I'm guessing they are, they're labelled A8AL9N.
I see a similar IC on another port and it's got 5V on a pin whereas the non-working ports have 0V on the same pins.

According to the 5411 data sheet, there is a power enable pin and a over current protection pin. Before I blindly replace the IC, I'd like to prove those pins to find out whether the IC has gone or there is some external trigger happening.

Also I read that the 5411 has firmware so wondering whether I can just replace those IC and expect them to work.

I've contacted Realtek asking for the data sheet, just wondering if anybody had any information about this RTS5412S IC

Thanks!

[tony359]

Re: Origin USB dock - no 5V on USB

Just to update the thread: the USB ports came back to life with no action on my end.

Yes, I did unplug the unit several times when I was testing.

Weird! Still looking for that datasheet if someone had it, Realtek never replied to my email.