Artifact from my HC4000

[klimal]

Recently, I noticed a dark grey, oblique, linear streak running from the top right hand quadrant of the screen towards the middle.
Clearly visible on light backgrounds and also on the blue blank screen.

It is not from the screen crease or imperfection as it is still there when I moved the screen up or down.
I cleaned the lens with a soft cloth but no difference too.

What can it be but most importantly, can it be fixed?
Lamp is about 1500 hrs now.

[anfieldude]

Doc,

It does seem like a problem and I'm pretty sure its not the bulb. I would suggest to contact the dealer u bought from and get it replaced or repaired.

Edit:

Just to ensure, hv u checked for light leakage that is going thru the lens due to reflections.

[klimal]

There is some light leakage from the unit .
There is a vertical low intensity band of light on the wall to the left of the screen.
This is quite some time oredi, at least a few months ago.
This curernt dark artifact is recent.
Could it be the lens assembly in not in alignment>

[mpyw]

time for an upgrade, get the 4k projector

[klimal]

The pj is now with the dealer for a service and diagnostic check.