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The picture is only producing the basic colours red green and blue

The television will only produce colurs of blue red and green. Also there is a strange pattern appearing in the picture, sort of like a maltese cross along the length and breadth of the screen(in the red green and blue) my t.v is only showing the colours of green, red and blue on the screen. How can i fix it?

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Re: The picture is only producing the basic colours red...

Hey i have fixed the problem. Please follow the following steps:
- Remove cable line and join again. (This will bring single channel mode)
- Press mute button once it works.. Your TV is in normal mode.

Posted on Oct 21, 2014

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Re: The picture is only producing the basic colours red...

You can start with the make, model and age off the back of
the TV..........................T.

Posted on Dec 24, 2007

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The picture turns green for a few seconds then goes back to normal

Hi. If it's not a picturetube (internal) fault, you may look for bad soldering joints on the printed circuit board, located at the tube.
This contains mostly the RGB amplifiers. A bad soldering on the one driving the "green" cathode, may cause such problems. It can easily be detected by gently knocking on the latter. Also look at the actual CRT socket solderings.
It is most unlikely that the fault is located in the colour decoder. Faults there mostly influence red and blue. In a PAL system, only red and blue are transmitted. Green is produced by a matrix.
Finally, in the worst case there is an internal fault in the picture tube itself. Usually, the discolouring is very bright, shows retrace lines across, and even makes the system shut down due to excessive beam-current. good luck.

Apr 13, 2014 | ESA ET427E 27" TV

1 Answer

BEKO 32WLU530HID only red colour except on internal Menu

Sounds like a loss of green--I am in USA and Scart term not used here but I am aware it began as internet slang for Component hookup--which does use a Green, Red, and Blue input cables---if that type then suspect no green from source or cable bad etc.

Apr 25, 2012 | Standard (CRT) Televisions

1 Answer

No green and yellow colour

If you see the picture in yellow colour, means that there is no blue colour output from the video drive section in your tv, Yello is the mixtrure colour of red and green. Green is actualy there. blue colour is absent.
To detect this fault, you must open your tv. Just look in to the video output section, can be located at the picture tube base card, which is plughed into it diretly. See for any loose soldering points there. Check whether transisotors are used for red, green and blue output stages, or an Ic or three seperate Ics are used for this purpose. Anyway, blue catode of your picture tube pin gets a hig voltage, and so the blue emission is absent. You just check the voltages at red,gree and blue catodes, at the respective picture tube pins, which can be taken at picture tube base card. All of these three pin voltages must be somewhat equal to each other. In your case, no voltage at blue cathode will be higher that the other two. Check for the reason. It may be due to an open video output transistor [blue], or an Ic, of one Ic if used for the three colour outputs. Check and replace the same, will rectify your problem. Ok
If you have andy difficulty, get it to me through Fixya. Ok
Gopakumar, India.

Nov 21, 2010 | JVC AV-27230 27" TV

2 Answers

Red, green and blue colours diveded on my TV

ok well "tube" tellys as they are called use an electro magnet to keep the picture stable and colours correct its called gaussing now if you have a speaker or something magnetic nearby it will stuff up the colors but only normally producing colors like purple,green, or white
if you have colors across the screen (that aren't caused by magnetic force) then you need to take it to a repairer or decide wether or not to buy a new one this issue can turn out to be quite hard to fix and can be expensive the different colored electron guns may be burning or burnt out causing pale color or it could be as simple as a power transistor in the H.V supply has shorted out..and causing power issues to the tube.
hope this helps,ben

Aug 13, 2009 | RCA 20F512T 20" TV

1 Answer


The picture tube of the tv has 3 color in CRT Red, Green, Blue. The red cathodeof tv set has no function, its either the resistor become higt resistance, that why u need a repairman to replace it.

Apr 10, 2008 | Standard (CRT) Televisions

5 Answers

My tv is picture is blue and green

Hi there my t.v has a similar problem, I turned it on and the colours arn't right, there the colours go out in three circles mainly mainly blue, green, red yellow, but depends whats showing on the t.v? Please help.

Apr 17, 2007 | Bush 5693D 24" TV

1 Answer

The picture is only producing the basic colours red green and blue

Can you post a picture of the Tv with the issue stated?

Feb 28, 2007 | JVC AV-24F703 24" TV

1 Answer

Problem in Screen display

Hi, J ! You didn't say how old you set is, but to me it sounds like you may have a warped shadow mask in you picture tube. A shadow mask could be compared to a piece of screen wire. It's function is to make the electron "beams" from the three electron guns strike the proper phosphor dot to produce the proper color- red-green-or blue. If this is the case the picture tube would requie replacement. Stargazer

Jan 09, 2007 | Sony KV-21CT1 21" TV

1 Answer

Toshiba 36A41 Bad Gun or Driver?

Sorry to say but your tube is bad. It may be able to br rejuvinated with a CRT restorer machine but its not always the case. Good Luck

Aug 29, 2006 | Toshiba 36A41 36" TV

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