Question about InFocus IN72 Multimedia Projector

5 Answers


After watching a film (2 hours 18mins) I switched off the unit as advised
the green light continually flashed for approx 1 minute,then stayed on.
The fan eventually stopped after approx 1 minute. EVERYTHING seemed
as before with no hint of the problem to come.

Approximately 2 hours after switching off the unit I attempted to switch the
projector back on to watch a DVD . I pushed the standby button on the top
of the projector but alas the green light went out . Devastation , shock , horror as much as i tried i was unable to switch the projector back on .I followed the guidelines for this situation as advised in the Infocus start up
guide, but all to no avail. I have tried changing the plug , fuse in the plug but I'm afraid the projector still does not power up.

I am hoping and praying that it is not a major problem to fix and also that it is not expensive . Must say the projector was a joy to watch , the quality of the picture suberb. Please,please help me .


Posted by jimmyfilms on

  • 6 more comments 
  • jimmyfilms May 07, 2008


    Just to say thank you for your assistance . You were correct

    the fuse on the power supply board was indeed blown. As you

    advise this was easy to replace , but alas after replacing the

    fuse and re-assembling the unit it still would not power up .

    Could you offer any further cause for the projector not powering up. I am seriously worried .

    Thank you again,

    very best regards, Jimmyfilms.

  • jimmyfilms May 07, 2008

    Hi Marie ,

    Great to hear from you. I would really appreciate your help in

    trying to locate the Power Supply Board for my Infocus Projector the IN72 Model. I'm afraid i don't have much money at the present time so I am unable to buy a new projector. I would dearly love to be able to get hold of a Power Supply board as I am almost sure that you are correct and that it is indeed a faulty

    PS Board. I live near Edinburgh , Scotland , but I would be delighted to be able to get hold of the board from anywhere in the UK. Fimgers crossed.

    Many thanks,

    jimmyfilms .

    PS. Keep up the good work.

  • jimmyfilms May 07, 2008

    Hi again Marrie ,

    Sorry I forgot to mention the part number in my last mail to you.

    The part number of the Power Supply Board for my

    INFOCUS IN 72 Projector is 510-2112-00

    Look forward to hearing from you.

    Very best regards,


  • TheMull May 27, 2008


    I have the same problem, my IN72 is not powering up, I was using it yesterday on high power this is the first time I've used high power for a prolonged session, and now the projector has no power light, i have checked the cable and there is 240v mains coming out, have taken the projector to pieces and checked fuse on the power board its OK any suggestions, did you receive a new board i can't find one on the infocus website, how much is it? Can't believe the PJ can fail as quick as this with no warning!!

  • skambi Jul 12, 2008

    I experienced the exact same problem. The fuse on the bord that has the power socket is fine, however the fuse on board # 510-2111-00 is showing open circuit. Just a couple of months back another friend of ours had similar problem but on a different InFocus model.

    I would appreciate if anyone can give me leads to where I can find the part.



  • folsom Aug 18, 2008

    I purchased an Infocus IN72 from Bestbuy. I connected my DVD (Samsung upconverting to 1080p) via HDMI to the Infocus IN72. Picture quality was awesome. All new movies had very good quality of picture and level of grey and black. I was projecting on bare wall and got excellent results.

    Just one month and the unit would not power up. I pulled it down from the ceiling and tried various other power cords and it would not work. I returned it back to Bestbuy and considering buying a Viewsonic Cine5000 which has a 720 p resolution with HDMI. It is a pity that Infocus did not recall these faulty units. They lost a good customer and more since I will not recommend to friends.

  • resbayu20506 Feb 27, 2009

    my in72 still powerup, first green light then blinking red, it can't switch on, the fan and lamp off, just blinking red at power button.
    can anyone have solution ?

  • Anonymous Mar 30, 2009

    The red light came on then I unplug the projector and replugged it in to turn it back on. Then it caught fire! I opened it up to find that the power supply board part No. 510-2111-00 burned out on c512. For everone else they can use a volt meter to check which part burned out by setting the meter to have power on, then hold each end to one part at a time to see which one has burnt out. If you touch both ends on a resister or whatever the meter should show votage passing threw it. Use a soddering iron to remove and replace. play around with your voltage meter with all your differnet part untill you get an understanding how it works.

    My problem is that part c512 completely burned and I cant tell what it was. I need a part number



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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 Infocus IN72 Projector.   NO POWER OR NOT POWERING - user_offline.gif

Posted on Mar 30, 2009



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I have same problems... where did you get part from?

Posted on Nov 20, 2008

  • Anonymous Nov 20, 2008

    Need infocus in72 part 510-2112-00 power supply

    took to a tech.. wanted 550! to fix way

    had it all apart... can do if someone can tell me where to get part...




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Is switching out this power supply fuse a relatively easy thing to do? I am having the exact same issues, but not that savy as this kind of thing.

Posted on Oct 17, 2008


Hi again Marrie ,

Sorry I did not mention the Power Supply Board part number
in my earlier mail.

The part number is 510-2112-00

Look forward to hearing from you again.

Very best regards,

Posted on May 07, 2008


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Hi jimmyfilms

This is simply a fuse located on the Powersupply Board that has gone and can easily and replaced by yourself.

Unscrew the screws at the bottom and on the sides and take off the top cover of the unit. Then replace the fuse situated on the Powersupply Board ( the one with the AC inlet on it )

Should do the trick !

Good luck and thanks for using Fixya !

Posted on May 06, 2008

  • Anonymous May 07, 2008

    Hi jimmyfilms

    The only thing left to do now is to replace the Powersupply Board. Take down the Part Number and search on the net for the part. Once again this is very straight forward to replace.

    If you could supply me with this Partnumber I could help you search for it. Also please include in wich country you are.

    Kind Regards


  • Anonymous May 08, 2008

    Hi Jimmyfilms

    They do not list these parts on the Infocus Uk site , but go the link by clicking HERE and request it in the contact section.

    I'll keep on looking !


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