Sewing machine help?

[imighthaveknown.livejournal.com]

Hi, sorry for the text-only post, but I was hoping someone could help me out.


I just pulled out my old sewing machine (it's a little one, a Singer "Tiny Tailor", mostly for mending things), which I thought I'd lost the AC adapter for but found it. And when I turned it on, it worked fine (needle went up and down when I turned the knob like it should), but when I went to thread it and put a new bobbin in, the needle suddenly wouldn't go back down. Is it probably jammed? Now suddenly the lever in front goes up and down just fine, the knob turns ok, and it makes a sound like it's working... but the needle stays in the "up" position. Any ideas of what might be wrong? I haven't put the bobbin back in yet (haven't figured out how), so might that be why? Any help you can send my way would be awesome. I hope I don't have to take it in-- it was working just fine when I first took it out of the box!

I'm probably just doing something horribly wrong, so sorry if I make any experienced sewers cringe. I'm primarily a knitter/crocheter.