If you've got a multimeter, you should be able to quickly check and make sure it's good.

1: Unplug the power
2: Continuity (diode) test from ground to the common jumper trace. Flip switch back and forth - should only read continuity in one direction.
3: Continuity test from voltage regulator output pin (rightmost) to the common jumper trace. Should only read continuity in the opposite direction.

If you don't have a continuity test position, substitute with resistance & watch for 0 ohms.