power hub broken on camera

Hi,

The short answer is no, it can't.

HDMI (High Definition Multimedia Interface) is a specification that combines video and audio into a single digital interface for use with digital devices. It is not used for power applications.

As can be seen in the image below taken from the service manual showing the block diagram for the camcorder, the USB port is the only port that connects external power to the charge controller.

(click on image)

Section 3 of the manual shows the disassembly procedure which will help to gain access to the mini USB port so that it can be replaced. Presumably this is what you meant by "power hub broken on camera".