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Have a new samsung lcd tv la46f81bd have sound no picture just all color ed lines and dots

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Check your book out, could be the lamp. Warranty?

Posted on Apr 02, 2008

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Posted on Jan 02, 2017

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There is a humming in back of tv.the sound always good but picture doesnt come thru and i get a green screen someetimes blurry with distortion.color wheel or dmd chip or lamp starting to go out


as my experience, the most possible reason should be the color wheel or its photo sensor board.

firstly try to clean its photo sensor board, or have to replace a new wheel.

i just have this wheel, when you need to replace it, contact me freely
humming-in-back-tv-sound-always-good-c0kfjfiw1sbibxbsbum35w3k-2-0.jpg

May 02, 2016 | Televison & Video

2 Answers

Can i realine the lens myself it has a yellow tint and yhe lettering is out of focus


If you have yellow coloring on everything, this is not a lens alignment problem. Either you have a color balance problem (weak blue) or the coolant fluid in one or more CRTs is going bad. The coolant liquid is supposed be clear, but with age it breaks down and turns yellow.

First, unplug the set and remove the back. Use a mirror if you have to, but look down at the top of each CRT using a bright light. They should be colored red, green or blue, with no yellow to muddy the color. That's a quick check on the coolant condition.

You can replace the coolant, but be very careful not to spill any inside the set. Broken-down coolant can short out electronics and cause a lot of damage to the circuitry, especially in the high-voltage sections. Some people prefer to remove the CRTs from the set for this process, but that is a considerable amount of work. Others use kits with pumps to remove the coolant, and work inside the set with reasonable precautions - if there is enough room. There are a number of good tutorials on-line, or at least there were when I last looked two years ago.

I recommend getting the color right before attempting the focus. Bad coolant may scatter the light and fuzz up the picture, so check that out first and post back what you find.

If you have yellow fringes on otherwise normal colored objects, the blue convergence is off. This will also make lettering appear out of focus. Most RPTVs have a procedure for bringing up a convergence pattern (a grid of dots) using the remote control. The dots should all be white or have very little color fringing. Follow the directions, and make small adjustments, then check the effects all around the picture. Correcting one section may cause a change elsewhere. Use a ruler to make sure the dots stay in the right place; otherwise you may end up with a distorted picture.

Caution to other readers: do not try to adjust convergence if you have a "bow-tie" shaped picture in one or more colors. This indicates a convergence amplifier failure, which must be fixed first.

Oct 12, 2010 | Samsung HCN5527W 55" Rear Projection...

1 Answer

Samsung HL-P5063W audio is fine, no picture. Initially made a loud buzzing sound, so we replaced the color wheel. No more buzzing sound, audio is fine, but screen is various shades of white. Left TV on for...


Hi,Yes your problem sounds like the DMD board.This is how it works: http://electronics.howstuffworks.com/dlp1.htm Basically the light of the lamp goes through a tunnel that carries a color wheel(rotating disc with a gamma of colors that creates the colors on your tv)then the light of the lamp goes through the DMD board which is a chip composed of around 2 million pixels that creates the images and colors.When it starts to fail it will create black bars,pixelation,color distortion or white dots on screens. Here's a video that will help you find where the DMd chip is located : http://www.youtube.com/watch?v=0jr_9A5Xd2Q Have a blessed one!

Apr 02, 2010 | Samsung HL-P5063W 50" Rear Projection HDTV

1 Answer

After changing color wheel on my samsung hlr 5067w tv my picture is high with black bar on bottom.top of heads are cut off.what went wrong? no proble before.


Hi,If you are experimenting vertical lines ,black bars ,color

distortion,pixilation,or white dots on the screen you might be having an

issue with the Dmd chip.This is how the DMD chip works:

http://electronics.howstuffworks.com/dlp1.htm Basically the dmd chip

is composed of around 2 million pixels that create the image on the

screen.You will need to replace in order to fix your problem.Have a

blessed one!

Feb 09, 2010 | Samsung HLR5064W DLP Projection TV

1 Answer

Have picture, but no color and loud humming sound


the color wheel needs replacement. You can get a replacement color wheel at www.tvrepairworld.com

Oct 17, 2009 | Samsung DLP HL-P4663W 46" Rear Projection...

1 Answer

Samsung lcd tv was knocked over accidently, and screen now is distorted with multiple colored lines, and no picture. Is this fixable.


Not without replacing the whole LCD sreen which can often cost a good deal more than you orginally paid for it. You can certainly get an estimate but your probably better off getting a new tv. Sorry to hear about it.

Oct 20, 2008 | Televison & Video

2 Answers

Hi! name's wesley. anyways, here's the problem. i just bought a new samsung 32' lcd tv and everything is great except for one thing: when i connect my ps2 to the "av 2" input, the sound comes out...


There is a problem with the AV2 input. Since this is a new set, return it for repair or exchange. DO NOT open it up as that would void the warranty.

Dan

Jun 05, 2008 | Samsung Televison & Video

1 Answer

I bought a Samsung 46" LA46F81BD today pluged it in and tune the tv. The picture was great after about 30 minutes the TV went blank and lost picture. I still have audio. does anyone know what the...


If this is a projection TV,you may have suffered premature lamp failure.If it's an LCD,could also be a backlight lamp failure.Either way,it should be under warranty if it's new.

Mar 13, 2008 | Televison & Video

1 Answer

Lcd tv


What is the make and model number of your set? I may b able to help you. desribe in more detail is the picture gone entirely and you only see colored horizontal lines on ablack screen?

Jan 21, 2008 | Televison & Video

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