Lot of 3 Alienbees B1600 Pro Photoflash Photo Studio Lights Power On Tested

Lot of 3 Alienbees B1600 Pro Photoflash Photo Studio Lights Power On Tested. All three lights power on. I put a regular lightbulb into them and two of them lit up, adjusting brightness with the slider. The last one powered on and the dump light was illuminated.

I was unable to "dump" the light and turn on the bulb. I don't know if there is any issue or not. I'm not familiar with flashes like this. One comes with the protective cover.

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