Hello there to all, I am a new member looking for some helpful answers. I purchased my 73" Mitsubishi DLP 7 years ago. I have changed the lamp twice and all has been well up until now. I am seeing a considerable amount of video clipping and buzzing video noise. Any ideas on what could be going wrong. This issue is mostly on the whites, deep dark blacks and bright solid colors. The mid tones are still very good looking. Is it time for a new set...if so which would you suggest for a 73" or bigger. Thank you for taking the time. Gene