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Optoma EP745 Will not turn on

We replaced the lamp, and when we went to switch it back on the projector did not respond.  The manuals simply tells us to call support, who cannot help us.

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  • Anonymous Dec 31, 2007

    here too

  • Anonymous Dec 11, 2008

    I brought on too and after 6 month it will not turn on. Can any one help on this?

  • Lynden Crabtree Dec 18, 2008

    Have an Optoma EP745. Shattered color wheel. Am looking for a replacement part, but am concerned that I'll have the same problem when I try to power up my unit.

  • Anonymous Dec 30, 2008


  • Mr-Sparks Mar 11, 2009

    After changing the bulb, the projector wouldn't power up. The problem is the black cut out switch next to the bulb housing (hole is a chair shaped, in which the chrome microswitch arm can be seen.) The under side of the outer cover has a plastic finger that should go into that hole to push the switch to "ON" when the cover is put back in place, but the finger isn't designed properly, so it misses the switch arm and never allows power to get to the projector. The concept is good--keep idiots who didn't pull the plug from touching a live circuit while they change the bulb--too bad the engineers screwed up the design. I fixed it by jambing an "L" shaped piece of 1/4 x 3/8 inch .032 Al into the hole (with one leg diagonally-corner to corner, and one leg flat, on top of the switch cover) to keep the switch ON, then replaced the cover (finger still fits in hole and keeps new piece in place.)



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Got mine to turn on even without the color wheel. The trick is to place the new lamp in and screw down all screws. When replacing the cover besure that the protruding plastic enters on the correct side of the wire switch in side. Tighten the lamp cover screws and do CPR on the center of the cover to ensure the wire switch has moved to the on position below the cover. Plug in the power to see if it works. If not, do CPR with your thumbs on the center of the lamp cover again. Usually this will fix it.

Posted on Dec 20, 2008


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I went to replace the bulb and when I plug it back in there is no power, no power light or anything. DS303

this is a common problem with optoma projector, if you replace the lamp yourself, it won't start!! let's sue them

Jul 16, 2011 | Optoma DS303 DLP Projector

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Turns on and calls for replace lamp, I already did it and still calling for replace lamp. Fan turns on and that's it power and lamp lights are on thanks

Projectors keep a lamp life clock to track the age of a bulb. The clock needs to be reset with each bulb that is inserted. Here are the steps with your particular projector:

1)Power on projector
2) Go to "menu"
3) Choose "Options"
4) Choose "Lamp Settings"
5) Choose "Lamp Reset"
6) Select Yes

Certain models require you to hold "Lamp Reset" for a particular amount of time. It could be instantly, 3 seconds, 5 seconds, 10 seconds... Just have to play until it responds.

Once that is reset you should be good.

Mar 08, 2011 | Optoma PRO250X Projector

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Where do i find the ballast unit, both inside my projector and for sale?

In the optoma hd-81 there is a lamp unit housing.It goes faulty the lamp unit housing .There is no ballast in the hd-81 projector.There is lens ,the lamp unit housing and the circuit board.In most of the cases the lamp unit housing goes faulty.In that case the lamp housing needs to be replaced.It can be replaced and replacement lamp is also available. -------------------- Buying original lamp is always advisable.But there is compatible lamp also available.The original lamp housing is costly and compatible housing is bit cheaper.In some rare cases the compatible lamp does not work.But the compatible lamps also are good. To buy original lamp.Click this link directly:--- ------------ this is link for compatible cheaper lamp.Click this link:-- --------------- The procedure to replace the lamp:--- to get this procedure.Please click on the link below:--- ------------ this link is for the user manual of optoma hd-81 and the procedure to replace lamp is mentioned on page number 59.Please read the instructions before replacing lamp.----------- This will help.Thanks.Helpmech.

Feb 03, 2011 | Optoma HD81 DLP Projector

1 Answer

Used my OPTOMA HD70 ABOUT 2years now -and had to replace the lamp i unplugged it and when turning it back on to work - it does not start , it`s dead the green led lamp does not flicker , does not work...

There is a switch on the side where you insert the lamp, it's black with a metal contact. If, when the lamp cover is replaced, it does not "activate" this switch for some reason (i.e. it is loose or perhaps bent) then the projector will not power at all.

Just remove the lamp and take a look at the switch for possible damage incurred from when you replaced the lamp.

Sep 29, 2010 | Optoma HD70 DLP Projector

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My Optoma HD72 projector operates for about 1 minute and then shuts off. I kept my old bulb around "just in case", I've replaced the bulb with the old one and have the same problem.

The problem is not over-heating. The Optoma HD72 has a known problem that Optoma won't advertise. The lamp driver is faulty. They simply have to replace the lamp driver. I purchased a spare lamp with my original purchase. I had the exact same experience as you at around 1200 hours on the lamp in ECO mode. I used the spare lamp. Same thing happened at about 1200 hours. I had a friend at Optoma. he confided to me the problem. I sent it in and they replaced the lamp driver at no charge. I got another 800 hours out of the first lamp and am now using my second lamp and have about 600 hours on it. The pic quality is so good with this projector (used Digital Video Essentials to calibrate) that I'll just order a bare lamp or two and use the existing lamp housings when I need a new bulb.

Apr 12, 2010 | Optoma H30 Multimedia Projector

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I have an Optoma EP745 projector. I heard a 'pop'

check all the fans, if still working. if the problem occur get assist to the nearest technician im sure your lamp balasst was deffective.

Oct 22, 2009 | Optoma EP738 Multimedia Projector

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Optoma HD65: no power after replacing lamp

i was blowin air in the back vent and i heard popin sounds and now i have no power

Apr 24, 2009 | Optoma HD65 DLP Projector

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Optoma ep 706, lamp lights on,replaced lamp, still not working

This is an unfortunate incidence and i will send you the serviceable manual of your projector if you can send me your contact email address to my email.Yes ,there are instruction to follow to replace lamps in projector if not you might miss it. First you must confirm that the lamp is OK from the vendors you purchase before anything.

Aniekeme Anthony.


Jan 21, 2009 | Optoma EP706 DLP Projector

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Microtek cx6

I've had the same problem with my projector three times (usually whenever there's a sports championship). You just need to call optoma, get an RMA number, and ship it to them. Theoretically they'll fix it under warranty and send it back free.

May 02, 2008 | Optoma HD72 Multimedia Projector

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