Question about NEC Projection Televisions

Open Question

NEC LT280, will not focus, seems to be a shaded area on top 1/4 of screen, if you tap the projector sharply a few times the machine will focus, turn the machine upside down the shaded area disappears, along with the ability to focus

Posted by on

6 Suggested Answers

SOURCE: shaded area on tv

CHECK THE OPTICAL ENGINE. THEN AGAIN THE LG BRANDS BELONG TO GARBAGE TIP

Posted on Oct 25, 2007

SOURCE: Blue Convergence Problem

This is a pain and you have to be carful in doing this fix. Its basically the bulb thats shot, its got that liquid in it so DO NOT BUST IT OR YOU WILL SCREW THE BOARD UP! THen you have to get a new TV

Posted on Nov 04, 2007

  • 1 Answer

SOURCE: I have have this TV for almost 3 yrs..now have a shaded area on the left side

The dark side of the screen causes of the lamp alignment or prism glass alignment. This is critical you have to consult your LG technician to do this. But if you have any background o repair consult the service manual. Please careful not to touch the prism quarts so that you maintained the clarity of picture and brightness on the screen. 

Posted on Mar 29, 2008

welcomejee
  • 10594 Answers

SOURCE: Shuts Down on its own.

It is bulb that requires replacement.

Posted on Apr 27, 2009

bassplayer97
  • 154 Answers

SOURCE: color is lighter in center of screen

sounds like the alignment in the color guns is off. this takes a professional to repair and usually isn't too terribly costly if it's just a realignment. check your local directory for large tv repair.

Posted on Jul 11, 2009

  • 16 Answers

SOURCE: I have a grey bar on 1 side

If you can see video thru the shaded bar it is a light tunnel shifted in the optics --

Posted on Feb 06, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Rear projector tv rear blue projector wont focus


Look into the top of the tube. Probably has fungus growth. Do a search. I posted that solution many times this week for that. Normally, focus don't go out on T.V's by themself. Either the tube is bad or has fungus or the screen control is bad.....but very rare will focus part fail...usually brightness/screen is at fault. Don't forget to check the green tube as well when looking. Take the back off and see if your head will fit. If not, a large mirror will do just fine. Put something on with writing displayed....easier to tell that way.

Dec 10, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Nec vt460 projector pix in focus but red ghost around figures


This is a convergence problem that is not easily repaired by a homeowner. This unit should see a servicer.
Dan

May 29, 2008 | NEC Projection Televisions

1 Answer

Can't watch footbal


NOTE: ----DO NOT TOUCH THE CONVERGENCE BOARD " -------
1. Bring Up 1 Projector Light 2. Bring Your Color Convergence + Sign and Should Be Center In Your TV 3. If Not Adjust Center with The 2 Tabs Just Above That Projector Tube You Have Lighted 1 Tab Will Move + Sign Horizontal Then Roll The Other Vertical Then Roll..U Will See--" 4. Once Your + Sign Is Center Turn Up Your 2 Other Projectors Make Sure They Are Able To Adjust Across The + Sign You used 1st Make Sure the 2 Other + Signs Move Left And Right And Up And Below The Vertical and Horizontal Lines. If Not Adjust There Tab to Make This Possible. 5. Using Your REMOTE Converge The + Signs Together. ---------------- IF YOU MESSED WITH THE CONVERGENCE BOARD ------------------- 6. Now Lower The 2 Lights So Your 1st Projector Is Lighted 7. Bring Up A Menue On Your TV -- Look At It ...Are The Lettering Center and Square ..?? 8. If They are Lower That Projector and Light Your Projectors 1 At A Time To Verify Letters are Center and Square. ---------------If You Have To Adjust The Menue To Bring Center And Square -------- 9.Looking At The Convergence Board You Will See 3 Rows Of Adjustment Dials Each Row Is For 1 Projector. ---TAKE NOTE TURN THE ADJUSTMENT Slowly--- 10. Locate The Row that will adjust The Projector You Have LITGHTED".... 11. Label On A Paper What Each Knob Will Do To The Screen Very Help-Full 12.Adjust Your Letters Dead Center and Square then Lower That Projector Light And Bring Each Projector Lighted At 1 Time To Verify Menue Is Center And Square. 13.Leave On Your 3rd Projector and Bring Up Your Light On The 1st Projector 14. Adjust the Letters Of Your 1st Projector Over The Letter Of Your 3rd Projector 15. Switch To Your Convergence + Sign To Help --Turn Knobs Slowly --- 16. Make Your Letters Merge Together And Your Lines Square. 17. I Use The Top Letters and Lower Letters And Keep The box Square 18. Hey If Your Projector Colors When Looking Through The Rear Of The TV Are Not Equal With Take And loosen The Wing Nuts And Turn The Lens To Focus the Color and Make Narrow Or Wide....All 3 - Equal DO NOT GET UPSET THIS WILL TAKE TIME MAYBE ALL DAY SO RELAX HAVE FUN" Do Not go Sticking Your Hand Into The TV While TV Is Plugged into The Wall" ---

Dec 16, 2007 | Philips Projection Televisions

1 Answer

Blue Convergence Problem


This is a pain and you have to be carful in doing this fix. Its basically the bulb thats shot, its got that liquid in it so DO NOT BUST IT OR YOU WILL SCREW THE BOARD UP! THen you have to get a new TV

Oct 26, 2007 | Philips 46PP9302 46" Rear Projection...

1 Answer

Shaded area on tv


CHECK THE OPTICAL ENGINE. THEN AGAIN THE LG BRANDS BELONG TO GARBAGE TIP

Aug 27, 2007 | LG RU-52SZ51D 52" Rear Projection...

1 Answer

Descending curved line on screen


if the tv has a portal on the side open it up and make sure the screen is not out of it's track, don't set anything on top of the set it could make it happen also

Apr 13, 2007 | Samsung HCN653W 65" Rear Projection...

7 Answers

Distorted Color and geometry of Picture


I've posted this solution several times but here goes. Try setting up the convergence through the menu by accessing the convergence setup menu. If this fails to work you have a bad digital convergence box and need a tech to replace it. About $60 to $100 fix.

Nov 03, 2005 | Panasonic PT-47WX49 47" Rear Projection...

Not finding what you are looking for?
Projection Televisions Logo

Related Topics:

42 people viewed this question

Ask a Question

Usually answered in minutes!

Top NEC Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

yadayada
yadayada

Level 3 Expert

61289 Answers

Are you a NEC Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...