I managed to get hold of a Sony HS50 just before the New Year and was very happy with it. Unfortunately it started to develop discolouration on the right hand side of the picture to the point that the opening titles of Star Wars were yellow on one side fading off towards green on the other. I dealt with the Sony Service centre in Wales directly and they picked up my unit and had it for several weeks while they waited for a new optical unit, which whilst frustrating seemed reasonable. They then shipped the unit back to me and immediately after setting it up (it is connected to an HTPC running Meedio) I noticed that white text on a coloured background was getting a line of red on the left side which it hadn't previously. After reading these forums I guessed this is down to the panel alignment so contacted Sony to pick the projector up again which they did. However they have now had the unit for another few weeks and are telling me they can't find anything wrong with it. Does anyone have any suggestions as to how to get them to understand what is wrong? Does anyone else have experience with this problem and getting Sony to even acknowledge it? I wish now I had taken some screenshots but hind sight is a wonderful thing!