Question about Home Theater Systems

1 Answer

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.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer
Re: Optoma EP745 Will not turn on

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

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

My projector goes blank every one minute

This is most likely the lamp. Replace the lamp and then in the setup menu you need to reset the lamp hours to zero. If you have replaced the lamp then you need to still reset the lamp hours to zero. If you do not it will never stay on longer than that hour. If both of these have been done and it is still doing this then it is over heating and this could be caused by lack of air flow (clean filters) or a bad power board.

Dec 01, 2014 | Panasonic Pt-ae700u High-definition Home...

3 Answers

Projector keeps switching itself OFF

The projector is probably overheating you need to check fans and lamp inside

May 28, 2008 | Home Theater Systems

1 Answer

Jvc x3 projector orange lamp light flashes wont power up

1,Check the fans ,if the fan is running
2,Inductor (Sensing element),near the Color Wheel. Use a cotton swab moistened with alcohol to wipe the Inductor.
Have a good day!
We supply original projector parts: lamp, bulb, Lcd, Lens, DMD,
motherboard, powersupply ... with high quality and competitive price.
Jerry China
Tel: +86 131788 67858

Nov 02, 2013 | JVC Dla X3 3d Projector

1 Answer

I have an optoma tx1080p projector and Yamaha receiver. Recently we started getting the problem where the projector keeps saying that the source is not found. When I connect the hdmi cable directly to the...

This is most likely a problem with what's called "HDMI handshake." It's a silly protection scheme called HDCP that is meant to keep people from copying content. The best thing to do is unplug everything, then turn on things in this order: receiver>projector>sources (directv, Bluray). If that does not work, check for firmware updates for the receiver or projector.

Oct 29, 2013 | Home Theater Systems

1 Answer

I only have 5 speakers and subwoofer of hts3450. how do I connect these to optoma dv11

You don't...

The speakers will still need their electronics to operate from the audio source.

Proprietary connectors are a clue that the base and the speakers are a set not to be mixed or matched with standardized audio components.

Feb 05, 2011 | Philips HTS3440/37 System

1 Answer

Dwin transvision 4 projector lamp will not light even after changing the bulb. It also looks like Dwin went out of business. Any options to fix?

Call Interlight @ 219-989-0060 and read them what the part # is on the bulb inside the cage. They can probably supply you with the lamp and you simply reuse your cage.

They were able to do this for me

Mar 22, 2009 | Home Theater Systems

1 Answer

How do you tell if the color wheel or the cooling fan is out

That would be the color wheel. They range from $150-$600. That sounds like the whole light engine could have went out. They can be rebuilt for around 750-1000 bucks.

Jan 13, 2009 | Samsung HTQ45 System

1 Answer

Need color wheel for Optoma EP745. Are any available?

Optoma sells a color wheel, same issue I have. Call 888-942-2929 & ask parts to send you a color wheel. Not sure the cost, BUT I read in another forum they are 89.99.

Dec 18, 2008 | Home Theater Systems

1 Answer

Runco Cl 610 keeps shutting down

on the cl-610 it would shut down after about 5 minutes of well as having to replace the customers bulb. so I took a look at the cooling system there are two fans which work fine, but there is a type of vent inside attached to the body of the projector it seems to have some back pressure if my words are right causing the fans to return the heated air back into the projector forcing the fast shutdown and lessening the life of the bulb. so as a test I removed the directional vent and I blew into it and most of the air came back rather that went out so I left it out and the projector has been running flawless for the last two days. might be time for a redesign on that directional vent cover. but check it for yourself first. if this has helpped please let me know.

Nov 27, 2008 | Home Theater Systems

1 Answer

Projector won't switch on

You may have a failed power supply or a blown lamp. If you have access to a spare lamp, try changing it. (as described in the user guide). If you know the lamp is good for sure, then it is better to call service folks.

Aug 23, 2008 | Home Theater Systems

Not finding what you are looking for?
Home Theater Systems Logo

Related Topics:

577 people viewed this question

Ask a Question

Usually answered in minutes!

Top Home Theater Systems Experts

Gyula Lacz

Level 3 Expert

482 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers


Level 3 Expert

6993 Answers

Are you a Home Theater System Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides