I have a 2004 650, and it's been sitting for several months because my starter clutch went out and I haven't had the extra funds to buy one. I had a friend wanted to see what it did when you cranked it. So I turned it on, everything normal, hit the starter button, heard a pop, and power left completely. I took the battery out and charged it, still nothing. I checked every fuse I could find, they all look good. I looked for any burned connections, they look good. With the battery hooked up I can put a probe light from negative terminal to the positive terminal and it has power, and if I turn the key on, probe light goes out, turn key off, probe light comes back on. I'm lost. I'm sure I need a battery, and I'm also sure having an actual volt meter will help. But I'm not even sure where I should be checking for voltage first. What would "pop" with a weak battery and completely kill power to everything if it's not a fuse? Anyone have a checklist I can run down?