Question about Sony KV-27S10 27" TV

1 Answer

Colour stain Hi, I have a pink/blue colour discolouration half way down the left hand side of the screem which is semicircular about 65mm across. Can it be removed

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 372 Answers
Re: Colour stain


Yes it is A degause fault caused by either something magnetic being close to tv screen EG hifi speakers.
Or faulty degause thermistor, Or degause thermistor is not making good contact with pcb & only requires resoldering to pcb.
Allso try turning tv completely off at the mains switch leave a few hours then switch back on.
If you decide to take to A repair shop this repair is not expensive.


Posted on Nov 21, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

The picture turns green for a few seconds then goes back to normal

Hi. If it's not a picturetube (internal) fault, you may look for bad soldering joints on the printed circuit board, located at the tube.
This contains mostly the RGB amplifiers. A bad soldering on the one driving the "green" cathode, may cause such problems. It can easily be detected by gently knocking on the latter. Also look at the actual CRT socket solderings.
It is most unlikely that the fault is located in the colour decoder. Faults there mostly influence red and blue. In a PAL system, only red and blue are transmitted. Green is produced by a matrix.
Finally, in the worst case there is an internal fault in the picture tube itself. Usually, the discolouring is very bright, shows retrace lines across, and even makes the system shut down due to excessive beam-current. good luck.

Apr 13, 2014 | ESA ET427E 27" TV

1 Answer

Onida tv crt screen has pink colour in the bottom and on the sides any help on how to fix this.?

It sounds that the degaussing posistor has damaged.
Will look like somewhat like this. Can be located at its man power regulator section circuit.

Jun 02, 2013 | Standard (CRT) Televisions

1 Answer

Pink color appearence when swith on tv for 1 minutes & wringles form on the screen


Pink colour denotes the absence of green colour dispay in your picture tube. I hereby gies an approximate voltages at the three cathodes of your picture tube socket solderings, and you just measure the voltages with reference to this. The voltages are approximate, and can chage up to 2% up or down.
Green Cathode = Pin number 9 [161VDC approx]; Blue Cathode = Pin number 8 [162VDC apprpx]; and Red cathode = Pin number 10 [157VDC approx]

If any of these voltage differes, the clolur related to that cahode will also rise or low, thath is if the cathode voltage goes very low, that clour will be prdominent, and if it goes high, that colour will not be there.
In your TVs case, the green cathode voltage now will be high. t may be due to a soldering loose to either to the picture tube base socket or at the terminals of the related transistor or Ic. It is best to resolder the suspected loose soldering points by applying a little more solder, as we in service field also do. It is very difficult to locate the exact loose soldering point and so I advice you to do so. If needs, replace the colour output transistors, of other devices if used. Just look at the voateg at pin number 9 at the picture tube base card. Resolder all the picture tube base socket pins. If you wants any more calrification, contact me through Fixya. Ok.

Nov 25, 2010 | Sony KV-T29CF1 TV

1 Answer

Hitachi C21 model.The colours on screen have got scrambled.

It sounds like something has left a strong magnetic field on the face of the picture tube, and that's causing the colour distortion. The electron beams from the tube's colour guns are hitting the wrong spots on the face. There is a degaussing circuit in the TV that tries to neutralise such fields every time the set turns on. Sometimes electrical equipment (particularly motorised appliances like a vacuum sweeper) operating too close to the TV can leave a field too strong for the degaussing circuit to cope with. Or a failed part in the circuit may have made it inoperative.

A hand-held degaussing coil can be used to remove the field. You can purchase one online, or call a TV service technician. It used to be a standard tool to carry.

Another possibility is that the tube has been damaged. There is a very thin metal mesh screen called the shadow mask behind the face of the tube. If this mask has been warped by a strong magnetic field or a mechanical shock (if the set was dropped, for instance), you will see the same colour distortion. In this case, however, there is no repair other than tube replacement. And that is likely to cost more than a new set with parts and labour.

Jul 26, 2010 | Hitachi C21-F200 21" TV

1 Answer

I have a bush colour tv and there is a blue,green,red colour wash right across the picture so people''s faces look half blue,green red....sort of as if there is a rainbow across the screen.. i do not have...

It sounds like your TV may need degausing.
Is your TV situated near to any loudspeakers or other devices with large magnets inside them? Or has anyone been near your TV screen with a magnet???
You need to try to get the screen demagnetised (degaussed). Many TV engineers have a degausing coil that could do this. It only takes around 20 seconds at most.
Some TV's like Mitsubishi have a DG button on the remote, that does this function without the need to call out an engineer! It only needs one press of the button every few years!

Nov 17, 2009 | Standard (CRT) Televisions

1 Answer

Pink colour

Hi there!
May be that the colour Amp is at fault or the tube is busy failing. Commonly it would be the colour Amp (Dry joints or faulty drivers). The Green is dead. I have had cases where power surge can magnetise the tube to such an extend that the whole picture will show one colour. In your case I doubt it very much. Good Luck,JUS004

Feb 26, 2008 | Bush WS6671 28" TV

2 Answers

Colour distortion on tv screen

as you say pink& green means red+blue= pink &green means you are getting all color like b+g+r so it requires adjustment only please call skilled person to do it.

Oct 01, 2007 | Standard (CRT) Televisions

1 Answer

Blue tint and lines on screen.

Those lines sound like "retrace lines" and several things can cause them. The most common are shorts inside the picture tube and shorted semiconductors in the video driver circuits. They can also be seen if the blue screen voltage is too high or if someone has tampered with the screen voltage control.

Jan 20, 2007 | Philips 28PW9536 28" TV

Not finding what you are looking for?
Standard (CRT) Televisions Logo

73 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Standard (CRT) Televisions Experts

The Knight
The Knight

Level 3 Expert

66413 Answers

Jaime Hernandez

Level 3 Expert

2267 Answers

matt martin
matt martin

Level 3 Expert

1187 Answers

Are you a Sony Standard (CRT) Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides