Question about Samsung PS42P2S 42 in. Plasma Television

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Samsung 42 inch


I have no picture but lots of red, green, blue, white colours around the whole screen, the sound is fine and averything else apfr4om picture. please help.

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Re: Samsung 42 inch

Take to repair shop this is no easy fix it yourself problem!

Posted on Feb 08, 2008

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The three picture cords (red/blue/green) often are a little larger around than the sound cords (red/white). If they are they same size, they are often grouped separate by picture and sound. Double check to verify if you have the "red" cords correct. Good luck.

Jan 20, 2011 | Insignia 42" LCD Flat-Panel HDTV


White Raster with thin lines; Sound Ok.

White raster with retrace lines: No picture, Sound OK
(picture tube based telivisions.)

It is a common fault to occur in most of the CRT based telvisions, regardless of which brand it is. There will be sound OK, and a bright screen with thin white horizontal lines across; at about an inch space, all over the screen area. This fault may occur along with colur shades also, like blue screen with white retrace line, red screen with white retrace lines, green screen with white retrace lines. Let us take the first case. A white raster with white thin retrace line acorss the screen. These are call vertcial retrace lines technically. To make it mor understand, we have to go to some picture tube electrode details. There are three colour cathodes for a colour picture tube, Red, Blue and Green. Two girds are there called Focus and Screen. Focus grid is supplied with focus voltage which in turn determine the cocus of picture, and screen grid is supplied with screen volrage which determine the emission of the picture tube; in short. There is a final anode to all the picture tubes, which supplied with Extra High Tension voltage, can be located at the top side of the picture tube, to which the EHT voltage from LOT is connected with the help of rubber ****** and clip. Without these three voltages, EHT, Screen and Fcous, no raster will be produced. Therefore in our case, there is a raster, so, horizontal output section including Line Output Transformer [LOT] is functioning well, and as far as sound is there, tuner and video IF section are working well. In fact, all other section except, video output section is working properly.
There are three cathode points on the base card, marked as Bk, Rk and Gk. Check the voltages of these three cathodes. In our case, it will be very low or approximately equal to zero. When cathode voltages goes low, emission of the CRT increases, is the reason. There must be a voltage between 120 and 135VDC at these points. Find out the reason for this voltage drop is the next step. The video drive voltages in most TVs comes from LOT windings, after rectification and filtering. There will be one reisitor of low value, say one Ohms or so, will be connected series with this winding, in between diode and winding. Check the voltage at the cathode of this rectifier diode first. If found low replace the diode and the smoothin capcitor. The smoothing capacitor will be between 33 and 47MFD 250VDC rating. Replace both of them. If there is volatge, say 200VDC or so, check whether this voltage comes to the CRT base board or not, If not, check the conducting wire, serial resistors; if used for open. There is no chance of transistor shortage at this time as the raster we see is white. If raser we see have a specific colour predominent, that is green, blue or red, check the revalent video out transistors and replace it. It is best to replace all the three video output transisors at the same time with same batch and number.

on Apr 18, 2011 | Flat Panel Televisions

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ShubhangiWe try to connect CD player with Samsung LCD TV. CD Player is having Three Component Yellow, Red,White. It dont have Blue and green components.What to do ???

Hi, Component input connectors use the colour convention
Green = Y (luminance signal)
Red = Pr or Cr (Red colour difference signal)
Blue = Pb or Cb (Blue colour diffrence signal)

Composite input connectors use the colour convention
Yellow = CVBS (composite video, blanking, sync)
Red = Audio Right
White = Audio Left

for compatibility both units will need to have matching colours. note the component inputs do not have audio and as such will also have a set of red & white connectors for use with the audio signals too ( rule of thumb Component = 5 connectors, composite=3 connectors)

Sep 23, 2010 | Samsung Flat Panel Televisions

1 Answer

Blocks of Colour displaying

 This tv has severe problems in the image processor - you bought a dud. Try getting your money back.

Jun 26, 2010 | Samsung Flat Panel Televisions

1 Answer

When using component cables(red, green, blue )

The series of the cable should go green red blue into the back. if you put the green in the red and the red into the green it give the TV a red base to go off of for the picture so everything is red. The reason the green cable won't is because it transmits a black and white picture which allows it a nice base to add the green and red to.

Feb 24, 2010 | Samsung HP-R5072 50 in. Plasma HDTV

1 Answer

I have a 42 inch samsung and the sound is fine

Is it still covered under warranty?

If not - you have a bad processing board and will need to be replaced.
A/V Guy

Nov 19, 2009 | Samsung LN-T4665F 46 in. LCD Television

1 Answer

Dvd playing blue picture

if it is hooked up with componant, thats the red blue green cables for video, and red white for audio, then you probabily eather dont have the red pluged all the way in, or you have the red audio, and red video---reversed, make sure to check them on the dvd player, and on the tv, if there correct, try using the composit input, that is the yellow red and white

Jan 11, 2009 | Samsung Flat Panel Televisions

1 Answer

Green & white sparkles, also picture changing to pinks/blues then goes off.

hi are you selling this set as i need some boards to tryn fix mine ? where are you located thanks

Feb 28, 2008 | LG 42PC1D 42 in. Plasma Television

1 Answer

Red, green, and blue rectangular "chads" or squares across top of screen

Hi there, this is easy thing to fix. Its LDV cable. This is the Cable which goes from the main board on to the screen. Un plug the cable from the screen side., then push the cable back. Make sure cable sits in .

This will sort all the problems with the picture,i.e colour problem , picutre squring up and many more things.

Regards Sam

Sep 28, 2007 | Toshiba 42HP84 42 in. Plasma HDTV

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