Originally Posted by Pip
On any of the recent Sonys or JVCs shading imperfections should be barely noticeable even with B&W. None are absolutely perfect. It sounds as if yours is unacceptable. Send it in before the warranty runs out.
Originally Posted by DoxieRob
Thank you for the information, PIP! Since my 95ES projector is now out of warranty, if I sent it in, what would physically be done to the unit by Sony repair technicians in order to eliminate the shading? And do you have any idea at all, even a ballpark figure of what the repairs are liable to cost me?
Thanks again, Rob
Originally Posted by AVfile
I plan to take advantage of the warranty soon. Here are some screenshots which show the "shading" problem on a white background. Do you think it's bad? My last projector was an old worn out CRT and I think this is bad.
Pip, Rob and others,
I finally sent my projector to Sony Professional Services in Toronto and it turned out to be a good experience. Note that Sony Customer Service originally had me contact a 3rd party repair shop, which would have been a waste of time because they ended up referring me to the Sony factory where projectors and pro gear are supposed to go. I was also in need of a new lamp which complicated matters (Sony parts are difficult to get in Canada now) and could have clouded the issue.
I included a hard copy of the attached picture and my list of issues briefly stated as:
1) dust blob in centre of image
2) uneven shading around entire image
3) loss of contrast (measured at 2000:1)
They diagnosed the root cause of everything to be a dirty air filter, LOL. The prism (optical block) was burnt (technician's words) by overheating due to lack of air circulation (dust). Contrast was degraded due to dust inside the lamp (some particles get through the screen and sit on the reflector). I do clean my filters and the housing when you're supposed to but not right before sending it in. The unit was more full of dust and probably already burnt when I got it from my dealer (store demo).
They replaced the optical block and cleaned the fans under warranty (this one time, as they reminded me cleaning the filter is part of operating procedure). All I had to pay for was the new lamp which I needed anyway. The best part is it took them about a week to turn around, as all parts were in stock!
The shading problem is gone and contrast is now better than when I bought it (store demo). In fact the black level is so low I can't measure it with my colorimeter
Note: The attached picture is before the repair.