I recently got a refurb'd Epson 8350, and when I had a white background up, I noticed a slight blue gradient - left to right, along the right side of the image, extending in from at most 10% of the screen. I played around with it for a bit, swapped out source and cable, but it persisted. I called up Epson and they quickly sent me out another unit, but it too has the same issue. I thought it might be the wall I was projecting on, but I held up a white sheet of paper and it shows up on that as well.
So far I've tested it with an Intel NUC and a PS3, and I've swapped out HDMI cables. I tried once going through my Onkyo receiver with the Intel, and once connecting directly using my PS3.
Anyone have any ideas what might be causing the problem?