How to find the short circuit element on electronic board easily
One method I have used is to allow current to flow from a power supply and then search for hot spots on the board using a thermal imaging camera.

So, you use a current limited power supply connected to VCC. Adjust the current and voltage so a substantial amount of power is flowing into the board. Maybe 100mW or so at first. Use a thermal imaging camera to find hot spots. If nothing sticks out, then allow more power. Maybe 250 mW, then 500 mW, then 1W until you see a hot spot. 1W should be more than enough.

If you don't have a thermal imaging camera, apply rubbing alcohol to the PCB before connecting the power supply. Then, after you apply power, watch for the spot that dries up most quickly. That is the hot spot. (I have never tried the alcohol method, but I hear it works).

Another option is to pull up the schematic and start removing components from the PCB that are connected to VCC. After each component, re-check the impedance. When you remove the faulty component (assuming there is only one component) the impedance will be high again.