Question about Optoma EP719 XGA DLP PROJECTOR 2000L 2500:1 CONT DVI-D WITH HDCP Multimedia Projector

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EP719 Projector is "Buzzing"

I have confirmed that the noise isn't coming from the fan. When I power up the unit the lamp comes on and buzzes for a few seconds, then the lamp turns off and the buzzing stops. The fan runs quietly. Any ideas?

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  • Glohstr Dec 19, 2007

    Youtube link.

  • Glohstr Dec 19, 2007

  • Anonymous Dec 28, 2007

    I have the same problem. I thought the lamp just burned out because it made a pop sound and then quit producing an image. I took out the lamp and turned it on (pushing in bottom door safety button) and it made the buzzing sound. When I turned the unit side to side, a half inch chunk of glass came out. I reinstalled the old lamp and turned it on. The lamp worked and it produced a pickure but the projector still makes the buzzing noise.



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Could be something touching the color wheel

Posted on Apr 30, 2008


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Sansung model 56 Inch hpl5663w first had a buzzing sound the tv repair man said it might be a color wheel but the tv played well except for the low buzzing sound . then one night the picture went black and...

Hi Charles,

Sorry for the late reply, I'm offline upon purchasing my service.
You have said that you can hear a low buzzing sound before the unit gone to subsequent shutdown and the lamp blinks green(meaning that the unit try to turn on the lamp for consecutive attempts but not generally mean that the lamp itself is faulty.) and the temp led light come on.

As a matter of fact all the information you have mentioned linked to the symptoms you've encountered right now. A low buzzing sound might be caused by faulty FAN inside the unit that trigger the error code (blinking of the standby/temp led light) and turns off the unit automatically due to thermal protection circuit.
However, the technician might be true also that the buzzing sound came from the faulty color wheel. To confirm it, you have to verify where the buzzing sound came from. Color wheel is in front of the lamp assembly. Faulty color wheel can produce the same symptoms you've encountered right now but most of the time, it shows 3 blinking led light at the front panel (Timer, Lamp, standby/Temp).

I would advice you to open the back cover of your unit, fixed the lamp door safety switch with the tape to make it in closed position( if it is on open position the unit will not power up), and then turn on the unit and observe the fans if will spin or not, and check also where the buzzing sound came from before the unit gone to shutdown.
I've suspected that the fault came from the fan based on the led light flashes. Please let me know what you will discover after following the steps above to verify where the exact fault came from. Also, let me know the exact status of the led light at the front panel, (Timer, Lamp, standby/Temp ), which of them lit solid/blinking, it will help us to narrow the caused of the symptoms.


Oct 14, 2011 | Samsung DLP HL-P5663W 56" TV

1 Answer

I replaced the lamp and the projector is make a very loud buzzing noise. How do i remedy this problem?

There may be a fan rubbing against a cable or something, but more than likely there is a vibration damper clip that has come loose off of the colorwheel and will have to be fixed by a technician.

Oct 02, 2010 | InFocus ScreenPlay 5700 Multimedia...

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When starting my projector it makes a buzzing sound for a few seconds then about 30 seconds it does it again and it will not come on. I changed the air filter but not the lamp.

If the seet is not powering up then the noise can be the fan or the power supply . If the lamp is not working then it can be a possible fault of the lamp or the power supply straining due to a load or shorted lamp and not starting up

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Optima EP719 won't power on - when power button

check that the lamp is on securly and that the cover is on securly too.

Feb 02, 2010 | Optoma EP719 XGA DLP PROJECTOR 2000L...

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There is a buzzing noise coming from the air con unit

if everything is running may just be contactor,if compressor is running not fan turn it off call service tech out(Fan motor bad)if fan is running but no compressor turn it off call service

Jan 06, 2010 | Mitsubishi Heating & Cooling

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I turn tv light comes on but i get no picture or audio....then light indicator blinks red

Lamp or ballast(if lamp has been replaced) is bad.
Explanation: green comes on: system works, waiting for light to shine into light engine: no light is coming out of lamp, system shuts down, then you see red! how to determine: pull the lamp out of the unit's compartment. Inspect lamp: bloated stem? shuttered? reflector is not shiny? Chuck it!
Lamp looks good or just been replaced: try ballast. Close lamp compartment without lamp itself. Make sure, door is shut, as well. Turn unit on and listen close to lamp compartment: good ballast will make a buzzing noise, then stop. You've got "red'! No buzzing: ballast quit. Needs major repair! Lamp must be good, for sure, to get to the last part of diagnostics. Conclusion: more, than 2000 hours of usage: replace lamp first!
Good luck,

Jul 29, 2009 | Panasonic PT-D5600U DLP Projector

1 Answer

Optoma ep719 will not power up

Try this:
There is a stuffed 10v 3300uf capacitor on the power board. You need to replace it.
Bellow you can check in the picture where the capacitor is located.
Notice that in this picture I have already took the bad capacitor out and replaced with two small cords to reach the bottom and test the new capacitor.
To reach this place is not fast, several layers of plastic and metal must be removed, but is not a hard task to take the capacitor out and replace it for another.
It works just great! Now it is back on track with awesome image.

Jul 11, 2009 | Optoma EP719 XGA DLP PROJECTOR 2000L...

1 Answer

Sharp projector(xr-10x) lamp wont come on. lamp only 600hrs old. second lamp to have stopped around this stage. could their be any other issue. when lamp did come on projector made a buzzing noise which i...

that noise could be the color wheel. it sound like a fan. but it could be a fan and if fan does not work properly , the lamp would not stay cool.

Maybe you should have a service center look at . before you get another lamp.

thanks doctor video

Jun 07, 2008 | Sharp Televison & Video

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