Question about Standard (CRT) Televisions

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I have a rainbow effect on my television screen.

The top of the screen is blue at the top, green in the middle and red at the bottom. This affect appears when it is on a channel without a picture. When it is on a channel with a picture the picture is good at the top, purplish in the middle, and yellowish at the bottom. Is it worth it to get this fixed?

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The deguesing is not working of your tv.or maybe you have a load speaker near the tv. take it away near the tv it damage the color of your tv set.

Posted on Nov 16, 2008

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Rainbow colors from bottom of screen to top corners


Check its degaussin posistor. Replace it. This component can be located at the main power regulator section.
Picture of the suspected component attached.
5_24_2012_8_30_27_am.jpg5_24_2012_8_30_45_am.jpg5_24_2012_8_31_09_am.jpg

May 23, 2012 | RCA TruFlat 27F520T 27" TV

1 Answer

Tv has a rainbow effect of blue red green


try to check the degausing coil at the back of the picture tube and the degauser at the power supply section

May 08, 2010 | Sony KP-53HS10 TV

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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

Rainbow of colors on screen


I just had a rainbow of colors on my tv screen...i thought it was a problem with my TV...however the screen went the "sign off" screen (verticle lines-red/blue/green) Then all of a sudden the picture came back and all was back to normal again.

So I say it's nto your TV it is a station problem!

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1 Answer

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hit pictue tube w open palm if colors move crt shot.  if not magnatized need degaussing.  or defl youk loose.

Nov 30, 2008 | RCA 36F530T 36" TV

2 Answers

Tv rainbow in screen


The picture tube has become magnetized, possibly by someone getting a magnet to close to it. You can de-magnetize it using a strong magnet (cow magnet or similar). Place the magnet as close the the screen as possible without touching it to the screen. Starting at the middle of the screen and slowly (not too slow, about one full circle per second should do) move the magnet in a circular motion. With each full circle move the magent twards the outside (making a larger circle) as well as moving it farther away from the screen. Using a magnet will not harm the screen, so play with it and you'll soon get the feel and will see what you need to do.
Tv's have a circuit built in to 'Degauss' (demagnetize) the screen each time you turn it on, but this will only work if the set is 'Cold'. If the set is left off for 2 hours (to cool doen) and does not demagnetize when you turn it on the circuit is faulty.

Jul 21, 2008 | RCA TruFlat 27F520T 27" TV

2 Answers

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Remove any speakers or electronic items that are near the set.

Jun 27, 2008 | Standard (CRT) Televisions

1 Answer

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you have a shorted green CRT that is affecting the other crts the short is internat to the crt that leaves what is called retrace lines. if the set is more than three years old then replace all three guns.

Feb 25, 2008 | Samsung TX-R3080WH 30" TV

1 Answer

RCA 25: television


Sounds to me like a bad picture tube with circle rainbow like colors.Good luck.

Sep 03, 2006 | RCA F25423 25" TV

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