Question about InFocus LP 820 Multimedia Projector

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Infocus LP820 - Turns on for 30sec then shuts down

Here's my problem. The projector starts up fine. Bulb strikes, picture is clear, all the fans are working. It works for about 30 seconds then the lamp shuts off. the screen shows "Retrying..." as it tries to, i believe, restrike the lamp. it starts to light up again and the lamp flashes on but then it all just shuts off to stand by mode. Can anyone help me? I've tried to talk to InFocus but they have been extremely slow getting back to me.

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  • klimmiks Nov 15, 2008

    I have the same problem. I noticed that mine strikes the light, i have about thirty seconds before it turns off without warning, and then the lcd panel reads "please wait, retrying" and then the lamp strikes again, turning on, and then shutting off after maybe 15-20 seconds. I thought that maybe theres a thermostat thats malfunctioning, but ive taken my projector apart and kept the thermostat cool while the projector ran, but the same problem still happens. It cant be the thermostat, i think, and i dont know what else to try.

  • Anonymous Feb 28, 2009

    I have the exact same problem with my LP820.

  • klimmiks Dec 09, 2013

    bad bulb. projectors start to act all kinds of funny with bad bulbs.

  • klimmiks Dec 09, 2013

    bad bulb. projectors start acting all kinds of funny when they have a bad bulb

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Your lamp is the problem. When the lamp shuts down and turns back on thats usually an indication of a defective lamp.

Posted on Aug 21, 2009

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This could be one of two problems I have seen with another model Infocus projector (they are very good projectors though)

The first is the video input. Make sure it is attached correctly at both ends of the cable.
The second, remove the dust covers and blow them out. The problem can arrise if the temperature sensor detects the air inside the unit is getting too hot. If you can see the sensor when the dust covers are off (it will look like a little lump of goo on the end of a wire) then just give it a wipe as well. If dust settles on those it can cause incorrect temps to be reported.

Hope that solves your poblem =)

Posted on Apr 11, 2008

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