Question about InFocus IN38 Projector
I run a business which has 8 InFocus IN38 projectors; we run each one approx. 7-8 hours each day. We vacuum/blow them out weekly. They are hung from the ceiling. All are fairly new (500 hours or less). Within the last couple of months, four of them have started shutting off at random times, usually within 15 minutes of starting them up in the morning. We then unplug them for 2 minutes, and plug them back in, and this usually fixes things.
Is this an overheating problem? Any suggestions?
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Posted on Jan 02, 2017
Hello, I just wanted to drop a line to thank the AVS members who posted this thread and add my 2 cents. I too was victim to the sorry about your luck attitude of infocus when my projector suddenly stoped working. I did exactly as many of you have done and tore apart the unit (after my 3 different calls to IF). I found the 1A fuse blown after only 400 hours of total use. So no biggie. replaced it with a 1.5A fuse, and a fuse holder. Well, after about 3 hours... Dead again. So I read online that most failures are in the inverted position. (ceiling mount). I figure as many have heat must be the enemy. I removed the side infocus covers and carefully cut out the black plastic end panels. my temp gun reads 20 deg f less out put temp and the air flow is much stronger. Take 3...invite family and friends over, mid movie and zap. Nothing. So I replace the fuse with a 2.0A slow blow. This last a little longer. I get about 5 hours and zap again. So i figure i will just have to keep replacing the fuse on my 800 dollar paper weight. But the plot thickens... While upgrading my surround with a new hdmi switching receiver (onkyo 805) I discover I have a serious buzzing problem. The problem disappears when I unplug the hdmi to the projector. Having a background in pro audio I know that i have a ground loop issue. So i have 2 options. remove the sheild drain from the hdmi cable or remover the ground lug on the infocus. So I remove the ground lug terminal on the power wire of the projector and woohoo. no more buzz. And believe me I was very happy to have a low noise floor again. But I also solved the fuse popping issue as well by complete accident. As after I removed the ground lug I have never blow another fuse and now have close to 1200 hours on the projector. It also fixed some odd problems that I was having with coloration of the the lower right corner of the screen and a light flickering problem I was having. And FYI all my audio and video equipment runs through a monster power rack mount conditioner so I am fairly confident that the problems I was having weren't caused by "dirty power". during testing for the buzz I even removed the conditioner temporally to make sure it wasn't bad with no change. So I hope this helps someone out there in the same boat. Good luck! -Bill
Posted on Mar 30, 2009
internal error. if the lamp looks ok and it doesn't have many hours on it, it might be the power supply. the capacitors dry out and do not supply sufficient voltage. the in72s do have that problem.
Posted on Aug 27, 2009
okay most people think well its not hot up there but truely it is hot toward the cealing. If its overheating on the roof mount try to use a wall mount instead.. If they have it running for 5 days streight then is something your not oding right here and that might be the mount.
Posted on Nov 10, 2009
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