I too had the dark screen even after replacing my bulb on my 3 year old 82 inch WD-82740. I had cleaned the lens and mirror, blew all the dust from the back and adjusted the contrast and brightness and still had dark shadows on the screen. Finally, I took the remote, pressed menu, picture, reset and selected reset to return all settings back to factory settings and SHAZAMM...the stunning picture I have not seen for a long time came back in all it's splendor...dark shadows on the screen are gone...night scenes are much better and I am a happy camper again. I had something selected that was causing the darker screen...maybe in the 3D area...anyway it's bright again and I plan to keep this TV for many years.