Question about Optoma EP738 Multimedia Projector

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Optoma EP739 overheats and powers down after 30min use

My EP739 shuts down after 30min of use in normal room temp. This started after one nights use in a night club that was filled with smoke from a smoke machine. my thought was that the fan is running slower due to sticky residue? i could do with some advice on this perhaps where to buy and how to replace fan? is there more than 1 fan? any thing else it might be?
thanks
richard

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5 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

  • 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

  • 2 Answers

SOURCE: Optoma EP739

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.

:)

Posted on Nov 27, 2008

  • 10 Answers

SOURCE: we have a optoma ep739 used at our local football

take the lamp out, there is a fan directly looking to the lamp... clean it with a compressor. and after that at the menu of projector there is a place called 'High Altitude'. turn it on. And it'll be fine...

Posted on Mar 02, 2010

Testimonial: "seems to have cured the promblem,many thanks"

  • 13 Answers

SOURCE: OPTOMA EP739 KEEPS OVERHEATING

Clean out the filter.

Posted on Feb 14, 2011

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1 Answer

Unit is shutting down due to bulb overheat


My EP739 never got to the point where it actually shutdown due to overheating, but the root-cause may be the same. First thing you must do is clean out any dust and debris that may be restricting airflow. If that doesn't help then read-on...
My Optoma EP739 started exhibiting color-banding and strong color shift after years of great service. After trying other suggestions that didn't work, here is the FIX for my unit. I have not seen this posted anywhere else.

Problem: After 10-20 minutes of use, color-banding and then a strong shift to purple/green with almost no red. If the unit is turned off for 5-10 minutes to cool and then powered-up again the problem goes away, only to come back in another 10-20 minutes. Enabling the "High Altitude" setting in the Setup Menu helped for a while (a week or two) since it forces the main cooling fan run at high speed always, but then the problem re-appeared.


Reason: Overheating. The electronics are overheating. Like several people have suggested: First step: Open the unit up and blow-out/vacuum all of the accumulated dust. Assure BOTH fans (there is a small drum blower directly cooling the lamp and a larger regular fan that circulates air through the entire unit) are operating and clear of debris.

Once you have done that, then look for the REAL issue. With the front panel (i.e.the panel with the hole for the lens) removed and looking into the projector from the front examine the metal heat shield on the right side above the lamp. In my unit, because of years of service and heat, the aluminum lamp housing had deformed slightly, tilting this sheet metal heat shield directly INTO the air stream from the fan. This restricts the airflow enough to reduce cooling capacity. This metal shield should be high enough above the lamp to be TOUCHING the plastic case. If it is bent down and is halfway into the air stream then it restricting the exhaust airflow, causing the overheating.

Fix: Bend the heat shield back up so that it is not in the exhaust airflow. It must be ABOVE the airflow, protecting the plastic case from the heat of the lamp. This simple remedy fixed the issue for me. My projector has been running 2-3 hours a day for 10 days now with no banding issues at all. That's it. Simple fix.

Feb 01, 2013 | Optoma EP739 Multimedia Projector

1 Answer

Can the Optoma EP739 be ceiling mounted and projected upside down? what are the steps to do so? also, what would be the best mount for said projector?


Mine has been in place for about three years. Because the ceiling was open I was able to create a connection for a tripod head on the ceiling and then using a STRONG tripod head and some small bolts (longer than the originals) I mounted an external base and with the tripod head fitting dttached to the projector it just became a matter of running the various connector cables from the sources I use that require projection to my wall.

Dec 02, 2010 | Optoma EP739 Multimedia Projector

1 Answer

My projector shuts off after only thirty seconds. and a red light turns on. I don't think it's over heating because it's not hot. Can anyone help?


HI
PLEASE CHECK FIRST LIGHT INDICATION ? IF TEMP LIGHT PL CHECK FAN IF ANY OTHER PL POST ON FIXYA .
M.R.MUMBAI & DUBAI

Aug 28, 2010 | Optoma EP739 Multimedia Projector

1 Answer

We have a optoma ep739 used at our local football club;but whenit gets warm it cuts out until it cools down;isthere any filters that need cleaning


take the lamp out, there is a fan directly looking to the lamp... clean it with a compressor. and after that at the menu of projector there is a place called 'High Altitude'. turn it on. And it'll be fine...

Mar 01, 2010 | Optoma EP739 Multimedia Projector

1 Answer

On my optoma H77 I am replacing a burnt out bulb with a New one. The ''TEMP'' light blinks immediatly without the projector getting up to normal opporating temp. Is there a ''Reset'' button ?


clean out the projector with canned air to get rid of the dust that could be causing it to overheat. also make sure the fans are spinning. if it still blinks, replace the temp sensor. if it overheats alot, the sensor will wear out from excessive heat.

Nov 07, 2009 | Optoma H77 Multimedia Projector

1 Answer

After running for a while the projector smells hot


Hey,

thats completely normal, make sure the fan and ventilation is working properly so it doesn't overheat.


Feb 18, 2009 | Optoma EP739 Multimedia Projector

1 Answer

Optoma ep739 color was going greenish so i replced the bulb and now it seems to be getting no power at all? i tried several outlets and still no power, no flashing light, no led, nothing. Any suggestions?


These units have many safety interlocks. First make sure that all of the doors that you opened are replaced correctly. If not, the interlocks will prevent any power from getting to the unit. Update this with what you find.

Dan

Jan 29, 2009 | Optoma EP739 Multimedia Projector

1 Answer

Optoma EP739


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.

:)

Nov 01, 2008 | Optoma EP739 Multimedia Projector

1 Answer

Powers off and lamp never comes on (new lamp tested in other ep739)


The lamp might be burn out or you do ot have the computer in the right plug and the right input slected.

Jul 23, 2008 | Optoma EP739 Multimedia Projector

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