Hi pompeyjohn - that wouldn't be a lamp issue, it has to be something else. Maybe a bad input? Your one sentence about trying different sources was cutoff - did you try all inputs to see if the problem was on all? Did you try a different cable?
It could be an issue with the video processing, which would be bad news.
How about a power cycle. Did you try that?
If you move the focus ring, does the focus of the image change at all? If not, maybe the focus pinion is off track. That wouldn't account for the ghosting though.
If you want to open the case and check out the optical path, lens, and DMD chamber for any obvious physical issues, I posted instructions on how to clean dust blobs from the IN7x platform a while back. If you search on "IN76 +dust" you should find it. The instructions tell how to open the case and remove the lens, allowing access to the DMD chamber. It's a longshot you'd be able to find anything though, chances are it's probably not physical in nature.