Tv prob My TV when i switch it on it had a halo shape in the middle with purple pink faint rainbow colours and has made the picture grey with bright pink colours on things like lips and certain other items on the screen.
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Either your picture tube has gone bad or the transistor or IC on the crt board, on the picture tube, that feeds the blue gun has gone bad. You would have to test the transistor to see if its shorted or open with a multi-meter, or check the voltages to and out of it. The voltages are around 200v and dangerous if touched, best left to a proffessional. If its the transistor/IC it would be a cheap and easy fix by a repair shop, if its the tube, you may want to go tv shopping.
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
Are you getting Green or purple or pink patches all over the screen? This could be a problem of Degaussing. Have you placed any Magnetic source near the TV recently? Some Tape recorder or walkie talkie or a Speaker, etc? The Magnetic field created by any of the above sources can cause coloured patches over a colour TV screen. It also happens if you shift the TV from one location to another.
The third possibility is that the Picture Tube's Red Output stage gone faulty. Unless you are a trained Solid state Electronics Technician, there is nothing you can do. Better go for a trade in.
My computer did this and I think my TVs just gone the same way. Was definitely a loose connection somewhere. In the computer monitor it was because the pins in the plug were slightly bent and if I moved the wire the picture got better. In the end I had to replace the connecting cable