My motorcycle (Kawasaki Ninja 300) does the normal dashboard light-up sequence when I turn the key, but the normal electrical whine that happens simultaneously stops earlier than usual. The headlights don't come on, but the tail light does. When I push the start button, there isn't even an attempt at swinging the motor. Strangely, the hooter works perfectly and at normal volume. The bike worked perfectly until this morning. I've checked the killswitch.
This seems like some sort of electrical problem with the ignition system. Is there anything I can do myself to diagnose/repair the problem without being an autoelectrician?