Just joined to share what I think is an issue with my 82-740. I had a wd-73737 a few years ago, bought brand new, and the the TV was amazing, color, brightness, 3d, it all rocked. I sold that a few years ago as I moved into a small apartment.
I am in a new location and recently bought a used 82-740. Looked decent. I got it home, noticed image was kinda of dull, reset all settings. I am kind of disappointed. Replaced bulb. Cleaned screen, cleaned mirror, cleaned lens. Image is a bit better, but not as bright as I remember.
I took the light engine out and cleaned the fans and such as they were incredibly dirty. Think I might find something on the lenses and light tunnel if I dig a bit further? Should I clean more parts? I figured they were fairly enclosed, but, as dirty as the fans where, maybe junk got inside.
I ordered a new bulb and that helped a bit but not much, on really bright images, the screen flickers, just barley, but a little bit. Should I replaced the ballast as well?