Question about Projection Televisions

3 Answers

My JVC CRT type tv picture looks dark even though brightness and contrast are at maximum (commercials look brighter).

Posted by on

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,550 Answers

Have you set ECO mode off

Posted on Nov 11, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 6,966 Answers

Hi,

Offhand depending on the age of the unit, it may need a small adjustment on the screen controls at the back of the TV. This of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Hope this be of initial help/idea. Pls post back if you are considering a DIY, how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

Posted on Nov 11, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

  • Expert
  • 196 Answers

Unplug the tv for sometime then readjust the settings again. and then try.

Posted on Nov 11, 2008

  • mmechanics Nov 11, 2008

    after unplugging the tv remove all the external connecting devices from the back of the tv such as dvd---vcd or any other device.then plug the tv power cord and then readjust the settings .

  • mmechanics Nov 11, 2008

    The screen phosphors will be worn out and the electron gun must shoot stronger to compensate. But when the electron gun is forced to operate at high intensities I think there will be more red bleeding, bleeding in general, convergence problems, etc. So I think when a set starts to get kinda dark it is already approaching death. :):(The cathode (the electron emitter) is probably the problem -there used to be rejuvinators that increased the voltage to the filament to keep the cathode hotter for it's remaining years - but that stuff when out with the B/W tvs - The phosphers can wear out - but more likely it is poor cathode emission or weak flyback transformer ( High Voltage) or atmospheric gasses leaking into the CRT that is the cause of the darkness and red fringes. - 
    when tubes ruled - 

    "filament activity" testing (lowering the temperature of the cathode about 10% and measuring the loss of emission) 

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

JVC HD-61Z886 61 picture is dark. Is this fixable.


Could be dust in your light engine or build up on your mirrors.

Jun 21, 2012 | JVC HD-61Z886 61" Rear Projection HDTV

1 Answer

The Picture on my HD-52G886 Model is really kind of dark I can still see the picture and sound is fine but a little to Dark when I try to brighten it then its really dull white.


Changing the contrast will also help brighten your screen. For best results, try changing the contrast and the brightness, to find the perfect combination for your needs.

Jul 19, 2011 | JVC HD-52G886 52" Rear Projection HDTV

1 Answer

I have a 50ich kdfe50a11e tv the picture is very dark its up to the brightest on the remote and the picture is still very dark what can i do manually to fix this


Good evening,



In the command menu and go to the image you put in more contrast, brightness, etc ... this page can control the television picture.

Hope this helps

Lurdes

Mar 31, 2011 | Sony KDF-E50A11E TV

1 Answer

Vs 4561 weak picture


Good Day, Techwanab;

Look for this to be your problem: CHECK FOR OPEN L2C50 PART #325C146030 ON THE SIGNAL PCB, OR BAD CONNECTIONS AND LEAKY CAPS IN THAT AREA.

Hope this was helpful and not too late.

Good Luck, big IRISH.

Apr 10, 2008 | Mitsubishi VS-45607 45" Rear Projection...

2 Answers

Dark picture


do you get all three colors? red, blue and green?

Dec 16, 2007 | Panasonic PT-51G44 51" Rear Projection...

2 Answers

JVC tv AV-27D304


Roger, if your contrast (sometimes called picture) and brightness controls are at max you can increase the tubes brightness by turning the "screen control" clockwise, be advised a little turn goes a long ways, don`t crank it too far or you will get retrace lines, you will have to remove the back from the set and follow the red wire down from the tube to the "flyback transformer" on the front of the flyback are 2 controls, focus and screen, do not move the focus control, this should fix your problem.

Nov 20, 2007 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Mitsubishi VS-6041- picture brightness not very bright


Hi Dawn,
The TV does have a screen control on each of the picture tubes ( there are 3 ) although I do suggest you have a qualified technician make the necessary adjustments as an improper adjustment can cause damage to the set. Should you deside to make these adjustments yourself, you'll need to remove the back ( or front in some sets) ( PRE-CAUTION, UNPLUG THE SET FROM THE WALL BEFORE PREFORMING ANY ADJUSTMENTS INSIDE THE SET ) The screen adjustments are located either on the bottom of each tube or in a group component located where the main High Voltage Wire ( large red wire from the black transformer on the deflection board ) is connected to. Look for a turn pot ( screw type adjustment ) that is marked SCREEN. When you locate it ( whether it be on each tube or in the group component ) turn it up only slightly and not to much, as excessive gain ( turning it up to much ) may cause the TV to shut down. When you have the proper brightness ( when it looks good to you ) close the set up and enjoy the renewed picture. Good luck and I do hope this has helped in some way
Ed
NC Electronics
Mills, Wyoming

Nov 18, 2007 | Mitsubishi VS-6041 60" Rear Projection...

1 Answer

Dark picture


sony had a recall on this set see if this is one of yours
http://esupport.sony.com/perl/news-item.pl?news_id=24

Oct 01, 2007 | Sony KP-57HW40 57" Rear Projection...

Not finding what you are looking for?
Projection Televisions Logo

Related Topics:

16 people viewed this question

Ask a Question

Usually answered in minutes!

Top Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

matt martin
matt martin

Level 3 Expert

1191 Answers

yadayada
yadayada

Level 3 Expert

61037 Answers

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

Answer questions

Manuals & User Guides

Loading...