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Rainbow coloured circle all the way round picture

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Convergence board is out call a service tech

Posted on Aug 28, 2008

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Posted on Jan 02, 2017

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Why am I getting a rainbow coloured circle on my bush tablet all the time causing it to freeze up all the time


The display is faulty. You have to change the display.
If you wish to get some details; check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/

Nov 18, 2016 | Bush Televison & Video

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Has a double picture and looks rainbow


A double pcture with two different colours??? more seriousely the rainbow effect could be of an appature grill un hooked in one of the three tubes (THIS IS DANGEROUS IT COULD IMPLODE) you should have a proffessional looke at it and you should NOT USE OR MOVE the TV until then.

Good luck!

Jan 04, 2011 | Sony KP-53V75 53" Rear Projection...

1 Answer

I have a five month old Samsung LN32B360 LCD TV I just turned in on and the picture came on but it had a rainbow look and then the picture goes off with sound only?


When you say 'rainbow look', do you mean vertical coloured lines on the screen? If so, then you will have a faulty Tcon. Could you get a snapshot of the fault and post it on here please then we can identify the problem more easily.

Apr 24, 2010 | Samsung LN32B360 32 in. LCD HDTV

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HAVE ROUND RAINBOW WHILE TV IS ON


then need to be gone service. i think colour circle may have changed.

Oct 10, 2009 | Samsung DynaFlat TX-P3064W 30" TV

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MY BUSH TV HAS A ROUND CIRCLE LIKE A RAINBOW ON THE SCREEN IS IT BROKE CAN ANY ONE HELP THANKS


Hello,

please try to unplug your TV for an hour. Then plug in the set and the picture should be OK.

Best regards,
Arpad

Oct 09, 2009 | Televison & Video

1 Answer

Camera will not operate properly. Picture is fuzzy and colours are not right. As though everything is rainbow coloured


On the tiny lens you can; as on ordinary camera lenses, turn it around to sharpen the picture in different distance's. Try!

Aug 30, 2009 | Boynq ALIBIAIR Webcam

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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 | Televison & Video

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 | Televison & Video

1 Answer

Colour fade of my 793s


rainbow colour is normally due to magenatic effect on monitor

 

see that any magnetic thing is near monitor

 

 if it is there remove it

 

.after that put off monitor for 15 minutes & then put on.see if any change is there

 

 if there is any change is there wait for 2 or 3 days it will be ok.

 

if brightness is also less along with fad color then

 

 check for video output section & crt electrodes for normal voltage.

 

it that is also ok then crt is getting weak,

 

please be in touch with me unless it is solved.

 

hope this will help.

 

Oct 11, 2007 | Samsung 793S 17" CRT Monitor

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