I have a Maxxtro MX-UCZ USB 3.0 Hub and recently it started getting hot for no apparent reason. After opening the enclosure and looking at the board from both sides I have seen that all solder joints look normal, no obvious short circuits. After further inspection I realized that the chip is the part that gets really hot and thus heats everything else - as soon as the hub is plugged in, the chip gets unbearably hot, even when nothing is attached to the hub. Apart from getting extremely hot it still works fine. When I checked for continuity with my multimeter, I noticed a rather strange thing. All pins of the external power jack and the shields of the usb ports are connected together.
The pins marked red are all connected together and showed resistance of 0 Ohms. Is this a sign that something else in the board is shorted? Pins of a power jack surely shouldn't be shorted like that.