Question about LG 42PX4DR 42 in. Plasma TV

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Red speckles on the sceen...

It seems to be only in the black colour that the red speckles can be seen,the tv is only three years old i have a ps3 linked to the tv so when i watch blur ray the problem is even worse..

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  • Miccara Dec 26, 2008

    I HAVE THE RED SPOTS AT THE BOTTOM OF MY LG. ITS VERY ANNOYING. THATS THE LAST LG PRODUCT IM BUYING.

  • lufonseca Dec 28, 2008

    I have the same problem and it seems is getting worse. Is really sad to buy a new tv and find out it has poor quality.



  • Anonymous Apr 21, 2009

    mine has spots all over it,but it comes and goes,its clear then it goes fuzzy,if you turn it off and on a few times it sometimes comes clear for a while

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Mines doing the exact thing

Posted on Dec 12, 2008

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2 Answers

Switch TV on then a blank red screen appear then a green and then a blue which then just repeats that sequence of colours every second. The remote control packed up working some month before. - 2 year old...


turn TV on, let the Tv cycle through the three colours, then using the remote press the menu button followed by the standby button. press standby button again and it all comes up working.

andy

Sep 20, 2010 | Goodmans GTVL32W27HDF 32 in. LCD TV

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SONY TRINITRON ONE COLOUR PREDOMINANT SCREEN


Sony Trinitron sets are of CRT [Caothde Ray Tube] types. The common fault seen in these type of TVs are any one colour predominant on screen wih sound OK. Either red, blue or green colour with some thin horizontal lines at about an inch apart will be seen on the entire screen. This is totally a display card problem, which can be seen pluged onto the picutre tube neck. There are three electron guns for every picture tube, which emits red, blue, and green beams, which in turn illuminates the phosphor on the screen to get that colour. If no emission from all guns, results in a blank screen, ie black screen without any disply at all. The three colour beams together produces proper coloured picture what we see on screen. These three gun's terminals are brought out by pins of the picture tube outside to which video signals are given in appropriate proportion to produce a TV picture. Normally, all these three pins are biased with a voltage of about 170 to160VDC+ve. Take one colour gun, as an example and and let me describe the problem.
Let it be a green gun. These guns are called cathodes of the picture tube. If it gets a voltage with respect to its grid, it will emit electrons according to the voltage applied to it. This is a negative process, that is, as the voltage at this pin drops, its emisson incresses and vice versa. If the emission increase, the colour with respect to that gun also will increase and gets predominant at the screen. So when we see a green predominant screen, there will be less voltage at the green cathode with resepect to the other two. If red colour is predominant, the voltage at red cathode will be less than the other two. If blue colour is predominat, the voltage at the blue cathode will be less than the other two.
We must find out the reason for this fault first. Assume that your Tv has a red predominant screen with some thin lines across it, at about one inch apart of the entire screen, it is clear that the the red cathode voltage is very lower than the other two. the main reason for this fault, normally seen in most of the Sony Trinitron, are loose soldering points either to the picture tube base socket or the resistor connected between the red drive transistor's collector point. Resoldering the most of these points on the base card by applying a little more solder will rectify this probelm. Other possibility is shorted video output transistor of that cathode. A direct short [collector to emitter] of these transistors will drop volatge to very low at that respective cathode of the picture tube, and that colour will be pridominant along with lines. Replacing the transistor will solve the problem. In some cases, the resistor connected to that transistor may have blown out. If so, it should alo be replaced. Whatever the case may be, voltage at the respective cathode that emits colour will be very low with respect to the other two. Find out the reason and rectify it. You can compare the voltages of the other two cathodes with respect to the faulty colur cathode. Cathode pins will be marked on the base card, and can be identified. It is best to pull out the base card from the picture tube neck and place it somewhere a safe place without shorting it with other parts of the TV. You can measure the voltages of these points very easly, without fearing the damge to the picture tube. After all are found Ok, replug the base card and switch on the TV. The set will be alright. In rare cases, chroma IC also can be a reason for this fault. if it is faulty, after a short period after switch on the TV, the IC will overheat and shutdown the entire system.

on Mar 21, 2011 | Flat Panel Televisions

1 Answer

Coloured Pixels in or around black areas when watching TV


This is know as a diffusion issue. Most times this can be corrected with some minor alignment on the pots on the YSUS pwb. Sometimes the YSUS pwb has failed and will need to be replaced.

Feb 03, 2008 | Sansui HDPDP4200 42 in. HD-Ready Plasma...

2 Answers

Plasma TV Fault


What is the make and model #?

Jan 14, 2008 | RCA L46WD22 Television

4 Answers

Lg 32lc2r, only showing picture in black and white


Make sure that the color control level is set to the default or 50% to start with. This should be in the Video menu.

The colour for the tuner and for the encoded base-band video uses a circuit area called the colour demodulator. It is possible that this cirucuit area has failed and needs servicing.

Jerry G.

Jan 08, 2008 | LG 32LC2R 32 in. HD-Ready LCD Television

1 Answer

Lg42px52 speckling.


The speckling is caused by the CTRL board. The firmware needs to be updated. Unfortunately LG does not provide a media slot for downloaded upgrades. You must order an install the factory updated CTRL board located between the power and the Y sustain boards.

Nov 24, 2007 | LG 42PX5D 42 in. Plasma HDTV

1 Answer

Samsumg plasma tv 42


it sounds like the panel is bad..if it is less then a year old you should contact samsung

Nov 08, 2007 | Samsung HP-S4253 Television

2 Answers

Toshiba 42hp83 plasma power supply problem?


I had the same problem. It turned out that one of the cooling fans get dusty and does not work. I opened the back of the Toshiba plasma TV and cleaned the failed fan, and it worked like a champ.

Nov 05, 2007 | Toshiba 42HP83 42 in. HD-Ready Plasma...

2 Answers

Daewoo 42 Plasma - Model DT4280NH


I have a samsung 42 in plasma television which is three years old, it has a blue flickering light to the right of the television, sometimes can see some at the top in the middle, hope you can help with this problem, is it repairable.

Sep 02, 2007 | Akai PDP4294 42 in. EDTV-Ready Plasma...

1 Answer

PANASONIC TV, TH-42PX60


If it's just one video plug, then perhaps you have to set av5 as being in colour somwhere in the menus.  If you require three wires for the pictures, as blue, green, and red, then make sure they aren't in the wrong ports.
Good luck.

Jan 16, 2007 | Panasonic TH-42PWD6UY 42 in. HD-Ready...

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