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Enfocus 8405 dlp projector

Blinks red, but the fan doesn't come

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Re: enfocus 8405 dlp projector

You may find that it is a simple issue of the lamp running over the max life, i.e. 2000 to 3000 hours, in which case you would need to replace the lamp. Sometimes you may be able to "fool" the projector by pressing both of the volume keys while powering up. Also, when you power down the projector and try to restart before the lamp goes through the full cool-down cycle, this same issue will occur. In the end you may need to send the projector for service as it may be a much greater issue.

Posted on Feb 19, 2008

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Fan noise on a Carousel 4200 Slide Projector is usually not the fan at all - - it is usually caused by the fan or mechanism drive belts (they stretch out and loose their elasticity over time & wear). Replacing the belts and re-greasing the fan axle should quiet the projector down nicely. The belts can be purchased from:
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Got projector out after several years of non use. Lamp would not light. We purchased a new bulb and installed it. Still doesn't work. Fan runs and all, but bulb will not light.

Check the internal power and lamp fuse. Sometimes, when a projector is stored, an area of corrosion develops around the lamp pins and lamp holder. If you carefully clean both the holder and the pins on the original lamp you may find it works OK!

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Dec 24, 2010 | InFocus X1A DLP Slide Projector

1 Answer

High pitch noise from the projector and is not from the fans

it's the colorwheel. if you have an infocus x1a, it is a dlp projector and has a colorwheel and dmd chip instead of 3 lcd panels. the colorwheel spins to allow the lamp to stike. it should make a slight high-pitched squeal. if it's too loud, the motor is shot and needs replacing.

Aug 13, 2009 | InFocus X1A DLP Slide Projector

2 Answers

Infocus x1a fan replacement

to remove the fan: remove the 8 screws from the bottom of the projector (4 silver, 4 inset and brass) and the 2 screws from the back. pull the back from the bottom, but use a small flat-head screwdriver to release the tabs seen through the topmost vent of the back. once off, unplug the speaker wires on the right and the cable harness on the left. pull the top off while pulling the front off from the bottom. remove the wire harnesses from the power supply board and the ground wire from the power input board. take the 4 screws off of the power input board and the 4 or 5 screws from the power supply board (and 1 center clip) and remove. take out the 4 or 5 screws from the metal shield and remove shield. now you can unplug the fan that need replacing and access the 2 screws holding the fan in. remove fan and replace with a like fan. since the fan speed is not monitored, if you can find one that's the same size, power, and plug size, use it. otherwise, contact an infocus service center and ask them for infocus part # 526-0192-00. reverse instructions to put it back together. but you must remove the front from the top case, put the top on first, plug the speaker and left harness in, then put the back and front on. wasn't that fun?

Jun 02, 2009 | InFocus X1A DLP Slide Projector

1 Answer

Infocus x1a fan replacement

Hi there

I just sent you an email through fixya and I don't know if it went through but I was just saying about the fan and the grey bar. The problem with the fan, is not the fan itself, but the controller board not supplying enough voltage to the fan (you can see this by powering the fan on its own using a 6volt supply, you will fine that the fan will work perfectly normal), thus having to replace the entire control board at around $650+, this is a very common fault for these models. The grey bar as meantioned in my post is caused by the faulty light tunnel, there is a link I've posted here somewhere which tells you how to fix it, but you need extremely strong glue and electronics skills lol, otherwise infocus wouldn't sell me the part on its own, only the whole optical enigne at another $450+. Very poor service in regards to infocus.


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2 Answers

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1 Answer

Fan problem

Kind of late response but it sounds like the belt has broken or stretched and slipped off. They are hard to find but there are some around.

if it's a very old model, the grease in the fan shaft cap and on the shaft itself, as well as inside the fan centre, may have hardened up. Remove the bottom cover, carefully remove the fan cover/fan cap/c-clip under the cap, spring (note the direction of the top of the spring)/triangular plastic bushing. if the bushing is cracked or cracks when you handle it, it will still work if you reassemble all pieces.

Now clean all greased surfaces and and put a thin but even coat of SUPER LUBE-TEFLON GREASE . It may be sold under different names-it comes in a 3 oz tube, silver grey, and the grease is whitish-clear. Fill the fan cap with it when reassembling. Also put a large dab on the end of the fan that sits (when the projector is upside down) on the "bottom" of the projector. You can usually find Super-lube at any industrial supply store.

Besure to make sure there are no pinched wires when you reassemble the projector.

Dec 08, 2007 | Kodak ATS Ektagraphic Slide Projector

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