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

1 Answer

Follow up on the Optima 719 with vertical white line

I read another post on another website. The writer had the same problem. He mentioned that he believed the color wheel had gotten out of balance. (I have no idea if he even knows what he talking about). He had tapped his machine and then no white line. I remembered that when I had started the projector the last time there was no white line. Then someone wanted the projector tipped up more that the front post would allow and put a book under the front of the projector. Soon we had a white line. Don't know if this was coincidence or not. I set up my machine yesterday on a level surface (without elevating the front post). It still had the white line. I tapped the machine lightly and the line went away and did not come back during the next 45 minutes of use. I don't believe it is "fixed" but wonder about main board failure if a tap could "fix" the problem. Any further ideas? Could there be a loose connection? Years ago we were having trouble with our vertical hold on our TV. It was under warrantee and the repairman told us that that particular model had a problem with some poor solder connections. He soldered a few and tested all and they worked. About 6 months later, the same problem. He came out again and soldered the rest of the connections. The TV has not given us any problem since. I know others have complained about this problem. Has Optoma looked into this that you know of? Anyway, thanks for your quick response and help.

Posted by on

  • Abouttime May 26, 2008

    I wasn't disputing you... Just wondering how a failure of a mother board could change when tapped? I used it again today. I set it up, ran it for 40 minutes and saw no problems... never tapped it. Strange.

  • Abouttime May 26, 2008

    I am just a LITTLE slow... I think I understand now. When you said the problem was with the mother board, you were saying that the only sure solution was replacement of the mother board because the engineers have never identified a specific component that is failing. Thus, if you want a permanent fix, you must replace the entire board. Now your answer makes more sense to me. Thanks!


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 563 Answers

Hi Abouttime

Tapping can fix most electrical things for a very short while - unexplainable !

But I have been working as a authorised service provider on mos brands of Projectors for over three years now and in all of the times the white line was a faulty Mainboard.

This is just my opinion and I only answer and provide a free service to those who are in need.

Wheter you take my advice or not is entirely up to you.

Kind Regards


Posted on May 26, 2008

  • Marnus Jacobs
    Marnus Jacobs May 26, 2008

    Hi there

    You will see over time that this problem will pop up intermittently.

    I've had cases where it only showed if the Projector was mounted upside down to the ceiling at a certain angle.

    Like I said - Unexplainable !

    I work very close with BenQ Corp. and not even their Service Engineers in the factories where these parts are designed and produced could give me a logical explaination to this.


1 Suggested Answer

SOURCE: Help needed for Optoma EP 719 DLP PROJECTOR

picture upside down

Posted on Jul 28, 2008

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

White vertical lines on my optima hd65

pin the wire correctly.. then place the projector properly without any shaking. avoid keeping it near heat..

Sep 01, 2010 | Multimedia Projectors

1 Answer

I have an Optima Model EP719 Projector. Suddenly I am getting white vertical lines and can't find a solution for removing them.

I would try switching out the DVI cable first. It could be faulty. This would be the easiest and cheapest solution to check.

Jun 09, 2010 | Optoma EP719 XGA DLP PROJECTOR 2000L...

1 Answer

White Vertical line in the screen.

Again, this sounds like a light tunnel failure. See my other post about this.
I replaced my light tunnel with square brass tubing I picked up at the hobby shop.

Sep 21, 2009 | InFocus ScreenPlay 4805 Multimedia...

1 Answer

Optoma dv10 projector has a blinking white vertical bar on the screen

contact optima in california. i had to after circuitcity failed to honor my extended warranty... surprise huh ??? anyway i talked to a factory rep. about the white vertical bar and he stated the unit has to come in..period. i said , so you know about this problem, he said yep, and the unit has to come in.. if your unit is under 2 years old they will warranty the repair, you have to pay the shipping to them, but they sent me a replacement unit next day air.. absolutely awesome customer service.. just google " optima projectors factory support" you will get an e-mail address. they e-mailed back immediately with a 800 number and we went from their..they were great and totally stood behind their product..

Jan 14, 2009 | Optoma MovieTime DV10 Multimedia Projector

3 Answers

Thin vertical line appears on projector

I have found that vertical lines that suddenly appear from projectors are due to poorly connected cables. Sut off your projector and wait for the fan to go off. Then unplug the connectors from the computer to the projector and secure them again, making sure to go all the way. Hope this helps.

Nov 25, 2008 | Multimedia Projectors

1 Answer


I just read a post that said tap on the top and the line will go away. I tried it on mine and it worked! I had to tap it fairly hard. I just kept tapping harder and harder on the plastic in front of the buttons and voila! The vertical white line disappeared!

Oct 07, 2008 | Optoma EP719 XGA DLP PROJECTOR 2000L...

2 Answers

White vertical line on left side of screen

I had a smililar problem after taking it apart i realised that i had screwed my mount skrews into the video main board and cracked it along with a few soldered wires, if you havent done any physical dammage to it try a firmware upgrade

Jan 20, 2008 | InFocus IN72 Multimedia Projector

1 Answer

White vertical line on left side of screen

Hi there

This problem can only be fixed properly by replacing the Mainboard.

Jan 01, 2008 | BenQ PB6100 Multimedia Projector

Not finding what you are looking for?
Multimedia Projectors Logo

331 people viewed this question

Ask a Question

Usually answered in minutes!

Top Optoma Multimedia Projectors Experts

color wheel light...
color wheel light...

Level 2 Expert

137 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

5612 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you an Optoma Multimedia Projector Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides