Colour on screen out of balance due to magnetic disruption
I am sure there is something on the remote that allows service mode and that allows you to rebalance the colour guns.... can anyone tell me how do to this. A portable stereo was placed on top of the TV and the speakers seam to have disrupted the colour balance. If anyone can tell me how to fix I would really appreciate it. I don't really want to spend the money on a repair. Thanks
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Re: Colour on screen out of balance due to magnetic...
You may be able to borrow a degauser from a local shop. If you can you turn it on and rotate it in a circular motion around the picture tube and back away slowly untill you see no effect. Turn it off and your done. You may be able to buy a small one at Radio shack. Bottom line is you have to use the right tool a magnet will only make it worse..
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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.
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!
There is a code to get into service mode, but you should read over the
service manual before you attempt to enter the service mode and change
any settings. You can really mess up your set very easily. You can get
the service manual at the link provided below, but you will need to
register with the site to get it.
actually your tv set was placed near object produced magnet especially speakers, used magnet, small one to de-gauss or just like cleaning the the tv screen untill impurity colors gone. need my help....email@example.com