On November, my brother and I bought a brand new Sony VPL-HS3 projector. Yesterday the Lamp "popped", I called the supplier and Sony and they said the our Warrenty does not cover Lamps (after 90 days), so I had no choice but to spend $200 on a new lamp. I also checked the Air filter and that was dirty too, I replaced the filter as well. My brother and I watch an average of 4-6 hours of the TV and ALWAYS turned it off when we were done. My projector is hanging from the celing right next the AC vent. Would the Dirty Air filter be the direct casue of the broken lamp? Also, How oftern should I change the filter?