The top of the screen is blue at the top, green in the middle and red at the bottom. This affect appears when it is on a channel without a picture. When it is on a channel with a picture the picture is good at the top, purplish in the middle, and yellowish at the bottom. Is it worth it to get this fixed?
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ok well "tube" tellys as they are called use an electro magnet to keep the picture stable and colours correct its called gaussing now if you have a speaker or something magnetic nearby it will stuff up the colors but only normally producing colors like purple,green, or white
if you have colors across the screen (that aren't caused by magnetic force) then you need to take it to a repairer or decide wether or not to buy a new one this issue can turn out to be quite hard to fix and can be expensive the different colored electron guns may be burning or burnt out causing pale color or it could be as simple as a power transistor in the H.V supply has shorted out..and causing power issues to the tube.
hope this helps,ben
I just had a rainbow of colors on my tv screen...i thought it was a problem with my TV...however the screen went the "sign off" screen (verticle lines-red/blue/green) Then all of a sudden the picture came back and all was back to normal again.
So I say it's nto your TV it is a station problem!
The picture tube has become magnetized, possibly by someone getting a
magnet to close to it. You can de-magnetize it using a strong magnet
(cow magnet or similar). Place the magnet as close the the screen as
possible without touching it to the screen. Starting at the middle of
the screen and slowly (not too slow, about one full circle per second
should do) move the magnet in a circular motion. With each full circle
move the magent twards the outside (making a larger circle) as well as
moving it farther away from the screen. Using a magnet will not harm
the screen, so play with it and you'll soon get the feel and will see
what you need to do.
Tv's have a circuit built in to 'Degauss' (demagnetize) the screen each
time you turn it on, but this will only work if the set is 'Cold'. If
the set is left off for 2 hours (to cool doen) and does not demagnetize
when you turn it on the circuit is faulty.
you have a shorted green CRT that is affecting the other crts the short is internat to the crt that leaves what is called retrace lines. if the set is more than three years old then replace all three guns.