Poke and prod your electronics with a new 'scope probe. This is a classic probe, good quality and has a nice strong spring-clip and grounding clip. Good for up to 100MHz signals, with a standard oscilloscope BNC connector. Comes as shown, the ring color on the body of the probe/connector may vary.
"Do not train a child to learn by force or harshness; but direct them to it by what amuses their minds, so that you may be better able to discover with accuracy the peculiar bent of the genius of each" - Plato