Question about InFocus ScreenPlay 4805 Multimedia Projector

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Fan stopped working then globe and remote stopped

Hi, the fan on my sp4805 wasnt working working so I replaced the fan with a computer fan. It seemed to work fine until I switched off the projector and when I switched it back on the remote doesnt work and there is no light (the bulb is practically new). It looks like other people are having the same problem. Is there anyway to identify/fix the problem without having to buy new boards or a new projector.

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  • nphil70 Jun 18, 2008

    Thanks. Yes I would greatly appreciate the service manual if you have it. Since its out of warrantee and service centers cost a fortune I am trying to fix myself.... crazy I know J

    The fan was slightly different but I only had it running for about 1 min. Everything including bulb and remote was working so I switched it off at the power and put the unit back together. This was when everything stopped. I put the old fan back in so when you switch it on you can here the fan try to ramp up, the green light flashes. I have pressed the buttons on the unit but they dont appear to do anything but I assumed you would not be able to tell if they worked because the bulb doesnt work......I may be sadly mistaken.

    The original fan works fine if you plug it into 12V, but in the unit it tries to ramp up then stops then tries again etc


  • dqfinch2 Sep 05, 2008

    I am having the same fan issue.  how do you take off the shell to access the fan, and what is the fan you should use. 



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Hi there

Yes, unfortunately it is another common fault, sad really lol
The remote not working could be due to the little remote sensor board that you will have seen when taking it apart (I have a service manual if you would like it), do any of the buttons on the unit itself work that you know of?
The bulb not lighting issue can be a number of things, usually a safety wise. When you replaced the fan, what were the specifications of the fan you used? Usually computer fans differ slightly to the ones used in this model, and can cause them to fail and the unit to over heat. If the projector switches on for a bit and then turns off, it means the safety thermostat in it is cutting out preventing overheating, you could try bypassing it just to see if the bulb will ignite. I know it may sound a bit dumb but check the safety switch on the door is fully in?
If you would like the service manual I could send it to you, I found it very helpful with mine, also a forum, I think AVS was extremely helpful aswell.

Sorry if this doesn't help, I will look into it further

Posted on Jun 17, 2008

  • Richard Ayala Nov 20, 2010

    Hey rustee, you still around? Could you please send me this info? I really need it. I just can´t figure out to exactly where you hard wired the nokia charger and if you recommend any type of on/off switch. I know that to "hard off" (unplug) the projector from the electrical outlet all the time, is a no no for the life of the bulb



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