I awoke this morning to find the colour on my TV had gone haywire.It is a Bush flat screen CRT TV. I degaussed and it now has a perfect picture in a circle. The circle covers most of the TV screen but the remaining corners outside the circle are either green or pink in tone occassionally blue.

Good day!

That problem is usually happen when the TV is near the magnet or the speaker.


You have to do is demagnetized the screen of your TV using screen Degausser.

The picture looks like this:


Just plug-in the degausser and push the button in front of your TV.

If you did not have that degausser please buy it to this link:
http://shop.ebay.com/i.html?_nkw=degausser+&_cqr=true&_nkwusc=degauzer&_rdc=1

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if crt pic tube magnitized need to degausse with coil

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!

i know a person who can solve this pro. 9426467211

It seems that it is a degaussing problem. TV sets have a degaussing coil that when the TV is turned on , it automatically demagnetizes the screen. Never place any speakers or anything magnetic near or on top of your set. if you see swirls of color and like you say, wierd colors, it is that the screen is magnetized. Turn it on and off with the switch. Not the remote control. The degaussing coil only works by manually turn the switch on and off.

REPLAXCE THE DEGAUSING P.T.C

try the thermistor degauss coil,

Your degaussing circuit is not fully 'demagnetizing' the picture tube.
You can manually degauss it using a strong magnet, but it's tricky.
With a tool made for demagnetizing you simply hold it close to the center of the picture tube and using a circular motion slowly spiral outward to the outer edge of the tube, pulling the magent further away from the tube at the same time. The same can be done using a strong magnet although the results may not be perfect. You can experiment with a magnet using wiping motions as you bring the magnet closer to and further away from the tube.

The CRT shadow-mask may no longer be degaussing, or the shadow-mask in the CRT is defective.

In or near to the power supply there is a thermoresistor that controls the degausser coils. When the set is turned on this thermoresistor gives a momentary high AC current to the degausser coil with a rapid decay for slightly over a period of about 200 ms or 1/5th of a second.

If this thermoresitor is defective, it will have to be changed to resore the degausser coil to work again.

On rare occasions I have had a bad degausser coil that had to be changed. I have also had the shadow-mask in the CRT become defective. The fix for a bad shadow-mask is to change the CRT. This is not feasible for this TV set!

You should get an experienced TV service tech to fix this for you.


Jerry G.

Your CRT (Picture Tube) screen mask has become magnetized. You need to degauss the CRT. Have you moved you TV lately or at any point had speaker sitting next to it? These are two things that can magnetize the screen mask. Well in any event you will need what is called a degaussing coil to demagnetize the CRT.

Here is the degaussing procedure:

Standing about 10 feet from the TV Screen turn on the degaussing coil which is in a vertical position and rotate it in a circular motion walking towards the TV .

Once about .5 to 1 inch from the TV continue to rotate the degaussing coil and the move away from the TV while still rotating the coil.

Once at the point where you began, position  the coil to a horizontal plane and quickly move the coil back about two feet and the turn the coil off.

This will deguass the CRT.

Thank you,
Shuttle83