I recently picked up a 4 bank Kino Flo off craigslist. I was buying some other gear from a guy and he actually threw this in for free because he said he couldn't get it to work properly. When I turn the unit on the bottom bulb turns on and flickers for about 5-7 seconds and then goes out. I've tried moving that bulb to over connectors but the only set that seem to be getting power is the bottom set. Any ideas on what I should start looking at first? I have emailed Kino Flo to see if I could possibly get it serviced but I'm not sure I'll get a response from them. The power supply is an older one, it's a BAL-400-S.