Question about Samsung SPN4235 42 in. Plasma HDTV

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Spontaneously stopped displaying images; screen is just black

TV was working normally earlier in the day.  Later in the day we turned the set back on and it does nothing.  The little red light turns off, we hear the click but it stays black.

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TRY THE Y-MAIN BOARD

Posted on Dec 26, 2008

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Sony Bravia KDL32XBR9 repair


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD screen are similar, irrespective of its brand and screen size.
Search the site by type in the "Brand Name" (Exclude the model number) to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Mar 18, 2016 | Sony Flat Panel Televisions

1 Answer

Need to repair Sony TV


Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Mar 13, 2016 | Sony Flat Panel Televisions

1 Answer

Youtube on my vizio 470i tv is off centered


CHANGING THE SCREEN ASPECT RATIO: ( From Manual )
The TV can display images in four different modes: Wide, Zoom, Panoramic, and Normal. Each mode displays the picture differently. To change the screen aspect ratio:
1. Press the MENU button on the remote.
2. Use the Arrow buttons to highlight the Wide icon. Press OK.
3. Use the Arrow buttons to highlight your desired screen mode and press OK:
• Normal preserves the content's original aspect ratio. Since the 4:3 aspect ratio is not large enough to fill the TV's screen, black bars are added to the left and right of the display image.
• Wide stretches a 4:3 aspect ratio picture to the edges of the screen. Since the picture is being stretched, the display image may appear distorted. If the program is already formatted for widescreen viewing (1.85:1 or 2.35:1), then black bars will appear on the top and bottom of the display image.
• Zoom expands images with black bars to fit the screen.
• Panoramic expands the display image to fill the screen.
images may appear wider than intended.
If you are watching widescreen (1.85:1 or 2.35:1) content, black bars will still appear on the top and bottom of the display image. This option is only available when the TV is displaying a 480i/480p source.

Apr 25, 2014 | Vizio Flat Panel Televisions

1 Answer

Picture goes black with gray fuzzy lines ~ 1/2" apart horizontal.


If your LCD TV or monitor has stopped working, or is displaying one of the following
symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can
examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life
of your monitor or TV by several years.
Take it to a repair shop.

Apr 05, 2014 | Sanyo DP50749 50 in. Plasma TV

1 Answer

My LTV-32w6 westinghouse powers on & has sound but displays black screen with very faint colored vertical lines. It shows like this for about 1min before it goes into standby mode & the blue power...


Depends on what is causing it...

Vertical bands of faint black are generally caused by filtering capacitors and can be found in the power supply or the 5 volt supply or even the Video processing circuit...it is not an easy task to identify the source of Video hum bars.....we also call them Jailbars.

Another problem seen is faint black lines caused by the TV set being in 4:3 mode all the time....right at the edge of where the picture ends and the black pillars begin, we see a faint black line that never goes away and is normally seen with a full screen....

That is actually image retention, but it's caused by the crystals that create the picture becoming polarized or ionized over a very long period of time....and it's not easy to DE-Polarize them !

But there are some theories out on how to do that....
Certain people suggest running the TV overnight with an ALL-WHITE picture and some suggest an ALL BLACK PICTURE...and some suggest alternating between both !!

Now, a black picture is easy to make, you just deactivate the Video Mute (blue screen) and set it to an unused Video INPUT overnight....

About the only way to make a white screen is to use the USB port for pictures and take a very bright outdoor shot of a piece of white paper that hopefully is out of focus too....That would create an all-white picture that you can plug into your TV set overnight....

Now if you decide to try this, deactivate any displays on your TV set...all you do is press the display button until the Video and/or USB input numbers disappear....

Next day , set it back to normal TV and see if it's gone or if it's REDUCED....try it again if needed, or try the exact opposite if you see NO RESULTS....

Sep 20, 2012 | Westinghouse Flat Panel Televisions

1 Answer

How do i get a full picture on my secnium hd tv?


Hello

To get the picture full screen come to screen aspect ratio settings.

The Screen Format feature allows you to change how the image of a 4:3 picture

is displayed on your 16:9 screen. The options are Normal, Zoom or Stretch. If

your TV receives an image with a 4:3 aspect ratio, the image can be displayed in

one of three ways:

Normal The image of a 4:3 video signal is centered with black bars on the
right and left sides of the screen

To get ito this setting mode
Enter the main menu and go to preferences select the screen format; option-2; and change the settings to get a full picture.
OK.

Feb 03, 2011 | RCA Scenium HDLP61W151 61 in. HD-Ready...

2 Answers

Straight out of the box had 3 pixels out, Now 2 days later a Black Circle.


The white spots are called 'dead pixels' and depending on the manufacturer, they may allow a certain number of them but normally not in the primary viewing area.

The other anomaly shouldn't be there and LCD displays are not affected by magnetic fields as are CRTs.

Return it quickly and I would be reluctant to accept a simple exchange.
Do some checking on the Dynex brand before you take it back though to see if this kind of quality is common to the make.

You might start here:

http://www.google.com/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2005-37,GGLG:en&q=dynex+lcd+problems

Jul 06, 2008 | Dynex 32 in. LCD Flat-Panel HDTV

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