Question about Flat Panel Televisions

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Goes from good picture to gray and small lines then back to good picture

Comes on plays good, then picture starts with lines on face then all gray with small lines, then comes back on

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Check capacitors in the power supply. They dry out with heat and most of time they bulge on the tops. Replacing them should fix the problem. The power supply voltage varies causing the problem you describe. Let me know what happens.

Posted on Mar 02, 2008

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1 Answer

Samsung LED tv


The power supply board probably needs to be replaced. Sounds like a loose solder joint on the board

Jul 05, 2016 | Samsung 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

Sound ok no picture hp invent comes on then the screen goes gray


Display or its board has got affected partially and might require the attention of a qualified service technician.

Jul 30, 2012 | HP PL4260N 42 in. Plasma HDTV

1 Answer

Problem with picture on HP Plasma TV


hello!
This is known problem with PDP displays. That means: one of X-buffers has bad connection to the PDP(plasma display). Or, in some cases, depend on PDP type, it could be panel itself at fault. You need to open your set carefully and get an access to X-buffers. Usually, at the very bottom of PDP, covered with aluminum heat sinks. By turning set on, while face down, start tapping slightly with isolated handle of medium size screwdriver. Observe, when line(s) vanished. That's where connection(ribbon cable) between PDP and X-buffer is compromised.
In some PDPs, those integrated into panel itself and nothing you can do, except to live with that or replace panel. Hope, you end up just reconnecting ribbons. Anyway, you must have very good technician background to do so.
good luck,
Alex.

Feb 16, 2012 | Flat Panel Televisions

1 Answer

First a line appeared across my screen then several weeks later the colors started to bleed over picture until now only a small amount of picture can be seen through bleed colors. It comes and goes


Hello
The digital processor board has the trouble. there is no repair to this board. It has to be replaced as card basis.
2_3_2012_4_21_40_pm.jpgSee the picture of the faulty board, and its position. The work is a skilled one ofcourse. OK.
2_3_2012_4_22_05_pm.jpg

Feb 03, 2012 | Toshiba 42HP83 42 in. HD-Ready Plasma...

1 Answer

In Bright pictures you can see horizontal lines on corners of houses and around peoples faces when watching movies and also on credits and words there small little horiztonal lines sticking off of...


If you are a Customer ,you cant fix this problem by your self, but reduce the Contrast and Brightness to moderate level and check how it goes

Jun 13, 2011 | Flat Panel Televisions

1 Answer

The picture goes to gray after an hour or so. Sound still works, but no picture. Picture starts to go bad...then goes gray. Is this a heat issue? Work good for about one hour...then goes gray.


When it goes gray, means that the T-CON goes bad after warm up or it does not receive the 12vdc feeding it from the main board, or the main board is bad, try running the TV with the back open with small fan blowing in the back, otherwise you can get a can of cold spray for electronics troubleshooting fro Radio Shack or repia shop and try cooling the T-CON bord or the main logic board with it to see will the pictures come back on. Also check the power supply for bad DC filter caps.
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

Aug 08, 2010 | Polaroid FLM-3201 Television

1 Answer

TV COMES ON NO PICTURE OR SOUND


If screen is gray glowing, the T-CON is bad or it is not getting the 12vdc from the logic board. You may have problem with logic board but do some voltage checking first.
If you are going to DIY and have proper tools and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com

Jun 28, 2010 | Vizio L37 Television

1 Answer

40" LCD Westinghouse Pictures comes and goes rapidly


Take it in to a service center for an Estimate. Parts are very difficult for Westinghouse sets.

Jul 15, 2009 | Westinghouse Electric VK-40H580D 40 in....

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