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Television My Magnavox TV has no colour, the picture is green, yellow & blue. Why is that?

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  • kerajality Jul 22, 2008

    My Magnavox is an MPTV 51

  • mnminor Jul 28, 2008

    I recently (within the last 2 months) purchased a Magnavox Tv/dvd player for my son's room. The images are fine, but the colors on the screen are purple, green, and yellow in patches. Sounds very similar. I would love to know if anyone has any ideas of if this is a fixable problem. I only paid a little over $100 for the set, so an expensive repair is a big factor regarding taking it to a repair shop.

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  • Master
  • 8,617 Answers

Sounds like you need to replace the coolant in the picture tubes ( CRTs) can you respond to this same post with the model number of your set?

Posted on Jul 22, 2008

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No green and yellow colour


Hello
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

1 Answer

I have seen a problem in my tv is that there is no green colour display in crt. only two colour ( i.e. Red and Blue) or combination may be display. Pl. look into this matter , replay soon


Your problem may related to the green output or driver stage in your tv. Usually green calour is not tranmitted, only blue and red colour informatein are comming from transmitters. Green colour information is regenerated inside the tv by matrix network. If the matrix get damaged no green colour will be displayed. To check first; whether the TV colour picture tube's green gun is right or not. For that you must connect a resistor of value more than 470k 2W, to the green cathode of the picture tube base to earth. The connection should be done causiously, not for a long time. It is advised to do in intermittantly with just touches. When you touch the green cathode with the resistor with one side of it earthed, a green flash must come on the crt. You can do this test for red and blue too. If there is no green flash, or light picture tube may be faulty. It is a very rare case. You must check the volltages of the other two cathodes [red and blue]. The voltage at green cathode must be almost the same as other two.
Just check the green output transistor for open. If it is open, voltage at green cathode will be high. Also check the base voltge of the green output transistor. It should be around 2.5vDC. You can compare the base voltages of the other two transistors with green drive base voltage. If there is no base voltage, the fault should be in the matrix section. It is inside an Ic. Philips usually uses TDA series Ics in chroma section. Check the Ic pin voltages according to service manual and try to rectify the fault. It needs a technical knowledge and skill.

Oct 14, 2010 | Philips Magnavox 27MS343S 27" TV

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

2 Answers

Why can I only get a black and white picture? the unite came with white, yellow and red cables and the back of my Hi-Def Sony T.V has white, red, blue and green. Audio is working great, I had to plug the...


how many aux inputs does your tv have?(vid1,vid2 etc.)there must be a set of component inputs you can use to hook up your player. Another thing you can do is to hook up your player using the S-Video connector if one is provided on both devices(you will need the cable for s-vid).

Dec 30, 2009 | Philips Magnavox MWD200G DVD Player

1 Answer

The screen is doubled and pinkish blue kind of like 3-d screen


this is aconverson problum.
first tv-set menu open and select converson option select and see to screen CENTRL cross line in 2 or 3 colour [RED /GREEN /BLUE] hten set on your REMOT cantrol arow key or [ ch+ ch- v+ v-] up down to arow key an set all colour line is meching with centrel and see cross line is complitly waite an d seethe pictur is normal ...
if not converson seting facility in the menu system pls. set your tv-set with tech . he is set menualy sum time's

Oct 06, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Problem with a colour display on Hisense tv


If your picures are all purple it means that the green colour is missing. TV colour is made up by mixing Red, Green & Blue. Removing Green leaving Red & Blue makes purple. Study the green colour circuit for a fault and confirm that the green gun inside the tube is working.

Aug 31, 2009 | Hitachi 60SBX78B 60" Rear Projection...

1 Answer

I CANT GET OFF THE SET UP SCREEN , MANGNAVOX 47" TV, NO UNIV. REMOTES HAVE WORKED, PRESS THE GREEN BUTTON TO PROCEED?


The TV was turn ON for the first time or the TV reboot/reset.
Universal remotes are not as "universal" as we like them to be. They only control a very, small amount of options for the TV.

You'll need the remote that came with the TV to fix this problem because it has the special RED, GREEN, YELLOW, and BLUE buttons you need.
If you don't have the original remote, you can get one at this web site. It's the best price going right now. $29.95
http://www.magnavox.newremotecontrol.com/catalog_item.php?catnum=996500043780

Jun 01, 2009 | Toymax Magnavox 47MF437B 47 in. LCD TV

2 Answers

The colour is off and the conversion


You have a problem with the blue and green tubes having a fungus growing across the face of the tube, thus blocking the light/picture. This will cause the color to be way off and the focus as well. Need to have the fluid changed in blue and green tubes. The red never seems to be affected...must be the red wave lenght inhibits the growth of algee or something. Anyway....That's what you need, not the convergance chip STK's. Trust me on this. T.V. tech. for over 20 years...see this ALL the time. Good luck.

Dec 19, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Adjusting colors on a magnavox 46" projection TV


Replace the CRT fluid. It grows algea in the blue and green only. 9.99 from MCM electronics.

Oct 19, 2007 | Philips 46PP9302 46" Rear Projection...

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

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