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Optoma EP739 Projector won't turn on

After replacing the bulb and cleaning with compressed air the projector worked for a little while but now won't turn on and i get no lights on the top. I know there's a safety switch next to the lamp under the plastic cover but it seems to be making good contact. I tried two working bulbs, checked all the connections I could find inside the unit by disassembling the main covers, and cleaned everything out. Are there any other safety switches? Any ideas?

Please help!!

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6 Suggested Answers

Benimur
  • 6966 Answers

SOURCE: no signal optoma ep739

Hi,

One good thing is that you are running XP. Will work on the premise (that you have posted) worked before and the driver (ForceWare91.31) was the only thing changed.

Let's try the easy ones first. Activate twin/dual view in your Display Properties. Right click on any clear area of your desktop, click on Properties, click on Settings tab, select monitor 1 or 2 depending which is your primary and which is your projector. Check (or uncheck-whichever works) on box "Extend....". Apply, OK.

or

do the same with nView Properties.

The hard ones are registry and/or inf editing, though I am reluctant to even suggest.

Incidentally, there is an application that is supposed to facilitate twin or dual view configuration, UltraMon. This may be better/safer way to address your concern.

If all else fails, you may have to rollback/downgrade your driver.

Cheers.

Posted on Jan 20, 2008

marsrover
  • 682 Answers

SOURCE: projector has no power

close lamp compartement door firmly because door switch can disconnect power from projector if not closed firmly.

Posted on Sep 22, 2008

  • 2 Answers

SOURCE: optoma ep739 won't power up

The lamp cover has a disconnect that won't allow power while the cover is off. Sometimes the piece of metal gets bent out of place.
Try removing the cover for the lamp, and bending the little piece of metal forward.

It worked for me!!!!

:)

Posted on Nov 27, 2008

  • 1 Answer

SOURCE: Lamp replaced, sequence from Manual (p.49) for 2010+ hrs fails

Apparently, the above posted steps do work, but they are finicky. The manual suggests that you do the aforementioned steps with the remote - I had tried with the remote and when that did not work I tried directly on the controls on the unit itself. Neither had worked - after multiple attempts, hence the posting above. The solution was that the various steps need to be done speedily - when I previously did it I apparently did not press the sequence rapidly enough. Nothing in the manual suggests that this is the case (and in fact I thought I had previously followed the steps in rapid succession on at least one of the many times I had tried, but apparently not quickly enough). I never could get this rapid succession of steps to work with the remote (as the manual said I needed to), but I did ultimately get the rapid succession of steps to work when done directly to the unit itself. The first three steps need to be completed within approximately 1-1.5 seconds, the final push of the volume+ button did require 2 or more seconds before the process was recognized (and complete). Never did have a single FixYa party try to address my issue - perhaps you only really get responses from them when you pay for their monthly service.

Posted on Sep 26, 2009

projdoc
  • 2236 Answers

SOURCE: optoma projector

i'd say power supply issue, but the led is blinking green. this means that it thinks it's in warmup/standby mode. but if nothing's running, the main board might be bad and needs to be replaced.

Posted on Dec 02, 2009

  • 1 Answer

SOURCE: My Blueray picture is 'protected' when I connect

JVC DLA-SX21U has not built is hdcp. use componant cable or buy hd fury

Posted on Mar 13, 2010

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The lamp cover has a disconnect that wont allow the unit to power on while the cover is off.

Try taking the lamp cover off and bending the little piece of metal you find underneith.

It worked for me.

:)

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Projector has no power


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I had a similar issue with my EP739, the problem would start after about 3 or 4 minutes and then get gradually worse and worse..
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Some sites suggested cleaning the machine of dust, which I tried using a can of compressed air... This did not fix the problem at first.. but when I had it apart I studied the colour wheel for a little while and wondered if some how the machine was synching to it incorrectly somehow.. So I blew out the colour wheel location sensor (It's kind of obvious being the only component mechanically connected to the color wheel. Much to my delight, this fixed the problem...

So my solution to the flickering / colour fading / colour swapping issue with DLP projectors was to clean out the dust from the colour wheel location sensor..

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