Fuzzy Display

Ok, I've went to three websites and they haven't answered me yet. Please help me!!!! Ok, I baught a camcorder off of ebay, I know, I know, I read later that you should never buy a cam off of ebay. Anyway, When I put a tape in my camcorder it is extremely dark. When pointed at a really well lit place, it only shows the outline of the thing I'm trying to shoot. I recorded something on someone elses camcorder and put the tape in mine, it shows up fine and you can hear it and everything but when I try to record with mine, nothing but black. I have no effects on, The shutter is fine, and I adjusted the viewfinder and the lcd and it's the same thing. It doesn't have a restore factory settings button as far as I know. It's a Samsung SC-D86. What should I do?

Some suggestions:
1. Try a Samsung user group (this is Pentax here!)
2. Get advice from a local service centre
3. Try doing a Google search

Demand your money back. It doesn't work.

Actually, yeah, I just noticed this was a Pentax group here. Where would I find a Samsung Group? I've tried searches on Google.