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Prints only green predominently - Office Equipment & Supplies

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  • fixyajp Jan 24, 2009

    Printer working fine, but now need to tick "print colour images in black", otherwise it prints in green, also if I copy from the printer it is produced in green.

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Without knowing what printer you have or what things you have tried I can only guess here. It sounds like you need a new cartridge. A color ink cartridge will have 3 colors of ink for most printers...cyan (blue), magenta (purplish-maroon), and yellow. Depending on what you print it is very possible that you could run out of one of the inks before the others. Printing green can be an indication that you are out of magenta ink. The cyan and yellow inks will combine and look green.

You can remove the cartridge and run a tissue over the printhead and see if you see all 3 colors as a quick test. If you only see cyan and yellow, then the magenta is probably empty or dried up. If you see all 3 colors I would reinsert the cartridge and try printing again. It is possible that the magenta was just clogged and you cleaned it with the tissue. If it still doesn't print all colors your best bet is probably to just get a new ink cartridge.

Posted on Sep 10, 2008

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Why does my TV have a green screen but no picture?


Single color predominant screen; is the fault. There are many reasons for this fault. It will be best to contact any service technician. 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/ Probable causes are repair procedure to this fault "One color predominant screen" is given by one among the posts.

Apr 09, 2015 | Televison & Video

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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.

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1 Answer

WHAT IS THE SYMPTOMS OF SYNTAX TELEVISION FOR HAVING GREEN COLOR?


The fault is called 'one colour predominant screen' If you wish to get more details about this, check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Oct 24, 2014 | Televison & Video

1 Answer

Green screen


One colour predominant screen is the fault.
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/

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1 Answer

Why are green horizontal lines are appearing, too much yellow colour and green light blinking red?


These horizontal lines are vertical flyback lines and would indicate
one or more of the tubes cathode drive circuits are defective.
As the picture is predominantly yellow this would indicate excessive drive to red and green guns. Check the red and green video output stages especialy any clamping diodes.regards from Vintie

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1 Answer

Photos are printing predominantly in yellow with most programs however microsoft office 2000 seems to work ok, i am running windows 7


In order to find the solution faster please try the computer hooked up to an alternate printer(take it to work and print there or a friends) OR get another computer and print to the printer. If the printer still prints out mostly yellow then their is a problem with the printer. If it prints out fine then we need to check the settings on your applications. Comment back and i will provide more help!

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