Question about Office Equipment & Supplies

4 Answers

No power to fan

Infocus x2 fan no power test outside projector it run

replace fan little power movement

Posted by on

  • alonecd May 14, 2008

    Hello, i have in my Service 1 Infocus 4805 the problem is dead 2 Fet and 1 diode, this is not a problem, i fix and have all voltages , but, the fans not work good, because the voltage no is correct, the input voltage in the controller board to fans is the 14 volts thats ok, but, have 5 volts in the 2 fans pins or conectors, my question is know what IC controled the fan voltages, i have a service manual of other model, is similar, but no have a schematic, please if you have any solution or idea please contactme, is my msn too,




4 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 16 Answers

Hi there.

Yes, this is a very common problem unfortunately.
It is in the controller board, which stops supplying the fan with enough voltage to start or continue to run. I fixed this problem using an old nokia charger, and some kiwi injinuity which fixed the problem brilliantly and no-one will ever notice =)
If you would like, I can tell you how and maybe get some pics of my one?


Posted on Apr 11, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

My cineza hs2 will not startup, it flashes the temp/fan lamp continually. Is this a matter of just replacing the fan? and where can i get one?

Posted on Dec 14, 2008

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 3 Answers

I also had the same problem that the fan had died. Using the X1 service guide ( which is really close to the X2, I opened up the X2 (not for the faint of heart). I measured the the voltage to the fans and it was only 6Vdc, it should be 12Vdc. The smaller fan was running but the larger one (for the bulb) was only twitching. Thus the reason that the bulb burned out early. So I used what someone had recommended earlier and provided external 12Vdc to the fans. Works great. I happened to have a nice 12Vdc 1.5A "brick" laying around as a power source. You can find them at Radio Shack ($35 needs to be at least 500ma). You could wire the brick directly to the fans but I installed a power jack on the side of the plastic housing, which matches the power plug on the brick - so that I can unplug it. The only trick when using external fan power is that you need to run the fans for about 3-5 mins after the lamp is shut off to allow it to cool down gracefully. Normally the projector handles this for you. So you need to first power off the projector but leave the fans running for a while. A small price to pay for a cheap fix. Enjoy.

Posted on Oct 30, 2009

  • 1 more comment 
  • John D Oct 30, 2009

    If you have to replace the fan, take it out and go to the good computer store that has components like Tiger Direct or CompUSA. They will have replacement fans. Cheaper than going to the manufacturer.

  • Al Topping Aug 17, 2014

    John: I considered the cool down issue; hence my wall rat is downstream of power plug/switch , Human nature is first turn x2 "off" then as some point, unplug unit. The delay allows fan to run for a while. See my ugly work around at

  • Al Topping Aug 17, 2014

    Duh, I mean up stream of 'off' switch...


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 563 Answers

Hi There

If this problem still persists after replacing the fans , you should check the Powerboard that supplies the fans power.

Posted on Mar 26, 2008

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Have Infocus X2 projector. When on a dark shadow line appears down the left side of screen. Could it be a bad lamp?

no it is not lamp problem. it must be light tunnel problem.
after lamp there is tunnel for light travel, made from 4 pieces of mirror.
this tunnel is glued. glue tend to break in time so the tunnel is no longer doing its purpose.
open this part of projector, there should be 2 little screws holding it. repair it by reposition mirrors and glue them from outside by little drop of temperature resistant and elastic glue. that's it !

Oct 03, 2010 | InFocus Projector Lamp for LP340, LP340B,...

1 Answer

How do you change the colour wheel

remove the rear panel, front panel, and top. the colorwheel is between the lens and the lamp. removing it is easy, but to unplug it, you need to remove the 2 power boards, the shield, and the fan/lamp housing assembly. there is a tip on this site with a detailed description on replacing it. it's under infocus x2. the x2 and the sp4805 are basically the same machine.

Dec 29, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

Infocus X2 projector shows picture in black and white only...

that little glass square broke off of the colorwheel, and it needs to be replaced. that yellow/gray line is from the light tunnel collapsing. both parts can be purchased and replaced by you. if you don't feel comfortable doing it, you can send it in to an authorized service center. try av solutions. they're pretty good. you can purchase infocus parts from them, too.

Oct 27, 2009 | InFocus Office Equipment & Supplies

5 Answers

Fan wont turn on infocus x2, instead makes funny siren noise and attempts to turn. Small fan inside works fine, larger one cant but will turn if touched, so doesn't seem to be anything in the way of it.

This problem is almost never the actual fan itself failing..
The intermittent whine you hear is the result of the Mos-Fet fan driver chip which is the speed control current amplifier.
It's an 8 pin surface mount chip on the bottom of the main (lower) circuit board. This is a common failure with these projectors.
The chip is inexpensive and needs to be replaced by someone who is skilled in surface mount component technology. You can replace the fan but you will still have the same problem. Hint, the bad chip is not the one closest to the large fan connector... It's the one closest to the small fan connector and it will measure 45-60 ohm's between pins 7 and 8. the part (rns70d) is discontinued however there is a replacement that can be purchased at...

Sep 13, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

Infocus lamp not firing

more then likely the ballast has gone bad and the lamp is not getting the right voltage to fire. Only other thing you can do is remove the lamp the turn the power on and check the voltage at the connector. This will not check the triggering voltage mine you only the lower operating voltage. But since you have replace the bulb with a known good one I'm betting on the ballast is bad.

Dec 08, 2008 | InFocus Replacement Lamp Projector Lamp...

2 Answers

Infocus projector power supply dead

the caps dry out. look for bulging caps. you won't find a schematic for the ps boards. infocus had someone else make them. the problem seems more like a overheating issue. as for the other one with the "just the fans", check the colorwheel.

Oct 03, 2008 | InFocus POWER SUPPLY CORD Multimedia...

2 Answers

X2 board

ebay has several that need bulbs... just a thought here is one of the item numbers Item number: 270207032811

Jan 23, 2008 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

Infocus x2 dose nothing

Assuming the power outlet and cable is OK the most likely problem is the power supply and needs to be replaced.

Dec 06, 2007 | InFocus X1 Multimedia Projector

2 Answers

Projector will not power on

Check your cooling solution wether its a fan malfunction or if it needs a new fan - or h20 cooling system

if not its either the power supply or something serious - send it to manifacture or go to a in-store repair

(it could be the dust protector)

Nov 16, 2007 | InFocus ScreenPlay 4805 Multimedia...

Not finding what you are looking for?
Office Equipment & Supplies Logo

Related Topics:

1,029 people viewed this question

Ask a Question

Usually answered in minutes!

Top Office Equipment & Supplies Experts


Level 3 Expert

8074 Answers


Level 3 Expert

2237 Answers


Level 3 Expert

82285 Answers

Are you an Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides