I have a Sanyo 60-HT LCD projector. After about 1 and a half hours of use it gets louder, as if the fan is cycling up to high and then back down to low. There is plenty of ventilation around the projector and it does not appear to be overheating. The room temp is also more than adequate, never getting much over 78 degrees at the most, and thats with a room full of people. The normal room temp is probably around 65 degrees. I would like to hear from other Sanyo 60 HT owners, or any one else for that matter, to find out if they have had a similar problem,and if so, what they did to take care of it. Thanks in advance.