Question about Daewoo DTQ-27S2FC 27" TV

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Rainbow colours appear on the screen after it fell over

My mother knocked her TV off the stand whilst cleaning. It now has a rainbow effect of colours in the top corners of the screen, other than this the picture and sound are fine. Is this something easy to fix or should she get a new one (out of warranty by 2 weeks). Thanks.

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Re: Rainbow colours appear on the screen after it fell...

Hey there well what i think happend is that the convergance has been modified and some parts has moved inside the TV. There's lots of posts in this website about this problem so just search for convergance. also check this link it will exlain you exactly how to deal with it Let me know if you need more help :) Tom

Posted on Jun 26, 2007

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Rainbow screen aiwa tv,, screen shows different colors like rainbow// brushing a magnet infront of the screen fixes the issue temporary

Picture tube is magnetized. Manual degausing is required. already you have done this.

Since you say it is reappearing, you have to check the following.

1. Relocate the TV or relocate if you have placed any tower speakers
or home theater speakers close-by.

2. Check whether auto degauss functioning OK. In the MENU
check whether you switched off auto degauss option. If it is OFF
enable it to ON.

3. Finally re orient the direction of your TV and watch the rainbow
effect. Switch OFF TV, wait for 20 mts, and again switch ON.
Repeat the process. It should disappear.

Magnetic toys or any other devises using magnet will cause this problem.

Aug 11, 2010 | Aiwa TV-S2011 20"

2 Answers

My son was bouncing a small ball against the screen and then it went to looking like a rainbow. Would this be the picture tube?

He may have caused some type of damage to the picture tube, but usually rainbow effects happen when magnets are present. Perhaps the ball became charged with a large amount of static, which then discharged across the tube, damaging the controlling circuits.

Jun 03, 2010 | Toshiba 36A43 36" TV

1 Answer

Has rainbow lines on tv screen

shadow mask is warped. tv might have been dropped. crt is bad(picture tube). try deguassing it. if you dont know what that is take it to your local service center. the rainbow effect is a magnetic field of some sort. try unplugging and move to a different location. could be a speaker too close to tv.

Nov 12, 2009 | RCA F36650 36" TV

1 Answer

Colour is rainbow effect on tv,starts as a semi circle near the bottom of screen then has another two/three colours up the screen?

May be PURITY on the tube, an effect of older CRT tubes caused by a build up of magnetism around the screen, easilt cured with what is known as a magic wand. An electrical wand that produces a magnetic field and is waved in front of the screen to de-magnetise it.
Ant TV engineer can do this for you.

Aug 28, 2009 | Standard (CRT) Televisions

1 Answer

I have a rainbow of color about the screen. The TV fell out of the stand and now the color pattern is messed up. It fell face down.

sounds like a degaussing (magnetizing) problem.could be that the posistor inside the TV set got loose when the tv fell down. If you have experience soldering electronic components, you should be able to fix it by re-soldering. Otherwise, call a tv tech to do it.

Jul 15, 2009 | Sony KV-27V42 27" TV

1 Answer

I dropped my 27in phillps magnavox

if this is a distorted kind of rainbow aura affecting the colour, you need to de-gauss the screen - a good tv repair man will have the mains powered magnet to fix this - and shouldn't charge alot.

Feb 23, 2009 | Sony FD Trinitron WEGA KV-32XBR400 32" TV

1 Answer

Colourful picture

Discoloration of this sort is caused by magnetism. All CRT TVs (like yours) have a de-gaussing coil around the picture tube that de-magnetizes the screen (more specifically the shadow mask) every time you turn it on. It is likely that the circuit that controls this coil is at fault. There is probably a cold solder joint where it connects to the main circuit board.

The other scenario is that someone (small child generally) has run a magnetic object very near to the screen, magnetizing the shadow mask (inside the picture tube) and causing a rainbow effect. This is less likely if the rainbow effect is a nice even circular shape. Generally if it's been magnetized by a magnet as described the discolored areas will appear blotchy.

In short, if you have some electronics skills, get in there with your soldering iron and touch up the connections to the de-gaussing coil. If not, find someone who does.

Oct 01, 2008 | Standard (CRT) Televisions

2 Answers

Color displays in rainbow effect

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

Jun 27, 2008 | Standard (CRT) Televisions

1 Answer

Tv screen - multicolours on screen

If your lucky the degausser ckt will fix your rainbow in a few days. When the set is cold and on power up, the degausser works before the picture comes up(hum noise). Worst case, the shadow mask is messed up and it will never be right.

Oct 27, 2007 | Standard (CRT) Televisions

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