The Purple Line

[Hodagger]

Ive finally got my HD projector working (just in time for football) but still have one hiccup to work out.  When I switch to Component In for HD I get a perfect picture with one band of Purple across the top of the screen.  Its not really noticable when the picture is light but very noticable when the background is dark.

I've searched the web for anyone with the same problem and finally found a post.  Unfortunately his turn it off and on solution does not work for me.

http://www.projectorcentral.com/part_opinions_details.cfm?opinion_id=976
 

Anyone ever heard of this annoying phenomenon and have a fix?

Thanks!