Question about ViewSonic PJ402D DLP Projector

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I have a viewsonic pj402d projector. put in the new lamp. it turns on then tunrs off in a two to five min. once it cools off it will turn back on but does the same thing.

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Your Heat Sensor is probably faulty, try a replacement.

Posted on Feb 03, 2010

  • mc08608 Nov 25, 2010

    I have the same problem - how do I get to the sensor and where can I get a replacement.



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Lamp light flashes amber without the lamp ever turning on, then projector shuts down in a minute or two

Based on what you're describing, it sounds like a failure in the lamp ballast itself. The projector will probably need to be sent for service.

If you have a spare lamp, that would be the first thing to try. However, if it isn't that, it is likely the ballast.

Mar 15, 2016 | ViewSonic PJ402D DLP Projector

1 Answer

Viewsonic pjd5111 projector has temp and lamp light on. not turning on

Check whether its cooling fan works or not. If there is any fault to the cooling fan, these symptoms you describes here can occur.

Feb 07, 2012 | ViewSonic PJD5111 Projector

1 Answer


If you are connecting the projector to the signal source via S-VIDEO cable this not uncommon. It usually happens when one of the connectors or the cable is broken. Try a new or different cable. If problem persists examine the connectors on both end of the cable and the one in the projector as well as the one in the signal source(pc, laptop etc) to see if there is a hardware fault. If all is good then the problem is internal with the S-VIDEO connector. In that case your other option is to use VGA.
Have a good day, hope this helps.

Nov 03, 2011 | ViewSonic PJ402D DLP Projector

1 Answer

ViewSonic PJ402D Projector does says searching for source, what does this mean? Laptop does not even notice that projector is connected to it as well.

you need to hold function down and press something like F1 F2 F3 F4 maybe twice to clone the screen display and make sure your projector is on vga and there is a secure connection between your laptop and your projector.

Jan 21, 2010 | ViewSonic PJ402D DLP Projector

1 Answer

AMber light blinks as soon as I turn it on then shuts off

As soon as you turn it on hold down the menu button until the lamp turns on.

Oct 13, 2009 | ViewSonic PJ402D DLP Projector

1 Answer

Projector shut off

Your lamp may well have died..

Oct 07, 2009 | ViewSonic PJ402D DLP Projector

1 Answer

My sharp xr-20x projector wont turn

are there any leds on? if not, the power supply is shot. if there are leds on, the color and number of flashes will tell you the problem.

Aug 12, 2009 | ViewSonic PJ402D DLP Projector

1 Answer

DIY lamp

I had the same problem awhile back and looking around for an answer i found this.

May 22, 2008 | ViewSonic PJ402D DLP Projector

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