I might be wrong...but...

I noticed something very similar on my setup (KD-34XBR960) when I switched to the component inputs from the S-video inputs. That is, the picture was blue as clo2016 has stated....and I was at first concerned that the 990 was responsible. So, I bypassed the 990 and went direct to the component outs of my DVD player...and saw the same thing (blue tinged screen). Only at that point did I look at the back of the Sony HD TV did I realize that I had swapped two cables there.

So...in my case...I found that in my haste to connect everything, I inadvertantly swapped two of the component cables. As soon as I made sure they were 'right' at both ends, the HD picture came in in perfect color and sharpness, and the blune tinge was completely gone through the DVD's component outputs, and when I then took the component outputs from the 990 I had perfect picture and the proper HD signal.

I'm not saying this is absolutely it, but when swapping / extending cables it is an easy mistake to make.

So...try it out and see if this fixes it for you as well.

Let us know...

Mark