Sure. You can measure the voltage on either of the two choke pins. The choke is the big red thing that looks like a cross between a magnet and a donut, 2 solid wires coming out of it into the board. Below the power plugs, can't miss it.
Meantime, been working on a few boards that won't come up. Running the board with no controller attached does pull current, and with an appropriate IR camera you can see some things after awhile. For example:
As you can see, one of the chips is not like the others. Being that it's hotter, it is probably shorted. And being shorted it's not passing control signals and whatnot. So off it comes, to be replaced by another chip....
This seems to happen a fair bit. And it's fun to roll out the bigger tools, kind of makes me feel like a Predator or something......