This is my second 720p projector (3rd projector total - first was an epson Home 20). I was planning on getting a 1080p next but got rushed into picking this a year early. I like it alot and the idea of 3D down the road is nice, but the reason I bought it was for the Optoma name and high lumen level and the price doesn't hurt either. Cant find source on OPTOMA EP774. the most two common ones are the intermitant lamp failure or colour wheel tracking rotation sensor when you startup the projector the lamp should drive half brightness approx then you should hear the colour wheel drive if it is at this point the projector Never operate this projector immediately after moving it from a cold location to a warm one. When the projector is exposed to such a change in temperature, moisture may condense on the lens and the crucial internal parts. To prevent the unit from possible damage, do not use the projector for at least 2 hours when there is an extreme or Optoma HD66 or HD67 Calibration settings I want to start a new thread for Optoma owners in regards to calibration of the projector. I understand every environment is different but we could use each others settings as a basis. Projector Ceiling Mount for Optoma HD600X-LV, HD640, HD65, HD66, HD67, HD6700, and HD6720 Projectors. Projector ceiling mounts from Projector Ceiling Mounts Direct (PCMD) LLC. This projector ceiling mount can be rotated 360 degrees, and pitched and rolled in any direction. Alibaba.com offers 130 lcd projector hd66 products. About 32% of these are projectors, 2% are led displays, and 1% are professional audio, video & lighting. A wide variety of lcd projector hd66 options are available to you, Since the HTP HD66 is an LCD-based projector, users need not to worry about rainbow artifacts that can be bothersome for viewers when watching videos projected on a huge screen. In addition, this HTP multimedia projector, which weighs 11.0 lbs and measures at 14 x 10 x 4 inches can be placed on