I bought a supposedly new in box "last of the USA made" Art PRO VLA's off of Ebay. In the picture it was outside of the box, and the seller only had 2 previous sales, so I was a little suspect, but I went ahead about purchased it anyway. When I recieved it, the box looked beat up and old, but the unit looked absolutely brand new. I hooked it up to my studiomaster console with 2 unbalanced cables out of my tape bus into the unit,, then 2 unbalanced cables out of the unit and into track 1 and 2 on the board. I had faders up but no signal was being passed yet, and the mixer was on. Then I turned on the power on the PRO VLA and the VU meters lit up for about 1 second then went black. Now it doesn't power up at all. The seller won't hasn't responded to my multiple emails, it's been about 3 days. I don't know if he sent me a non functional unit, or if I fried it. The VU meters did light for a second,, and now they don't light at all and the unit doesn't turn on. The manual says it has balanced ins/outs but it claims it will work fine with unbalanced cables as well. Any ideas for me? Thanks guys.