I have a HD81 i bought in 2007 sometime. It was sold to me as a demo unit, but said it came with a 4 year warranty. Long story short it is now not working (same blue screen and horizontal line issue as everyone else). When i give Optoma the serial # they will not RMA because i am not the original owner. I'm taking this up with the person i bought it from, but assuming i'm SOL what are my options? The scaler is still fine, and i had JUST bought a brand new bulb. I know the bulb fits the HD81-LV and possibly the HD8000-LV. I wonder if i could somehow just buy the HD81-LV projector without the scaler, assuming they are the same. Could i use the scaler with the HD8000-LV? Maybe i should look at the epson or panisonic. My room has a fair amount of ambient light so i'm interested in higher lumens. My screen is also on the large side (around 120 i beleive) thanks, Shane

Just bought the Optoma HD81. distance is about 17.3 feet, diag image is 114 (56x100). I'm trying to figure out what the offset should be.. On Optomas website it says 137% of the width of the screen.. that cant possibly be right? Other places i see 127% of the vertical, which would make a lot more since.. can anyone confirm? i dont want to have to mount this thing twice! thank god i have tall ceilings. shane

Is it true that an HDMI cable > 15 ft will require a booster? And what sense does this make when virtually all front projectors are going to be more than 15 feet (as the cable runs) from the receiver.