Question about Philips 28PW6006 28" TV

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Circlular discolouration on screen

The colours 'blew' on my tv - everything in the centre appears greenish, with a blue ring outside this, and 'normal' colours ponly appear at the very edge of the screen - can this be fixed? Many thanks

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Re: Circlular discolouration on screen

Im sorry My friend I dont have a clue what your saying .. I need a picture or more detail as I dont have a clue where to start get back to us.

Posted on May 28, 2006

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The greenish hue cannot be adjusted from the menu. One has to do it from inside.First confirm by turning the color settings to zero using the remote. You should get a clean black and white image with no traces of any color ( inc: green ). If your TV is greenish , the green drive on the base of the picture tube has to be trimmed.
All you need is a screwdriver. There are dangerous voltages inside a TV, some as high as 27,000 volts !!!. Where the color adjustment has to be done there are voltages as high as 110 volts and 8000 volts.If you still want to make the adjustments yourself revert back for instructions

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I have a GVA tv which when I turned it on this morning has now got a sort of circular rainbow on it, the people in centre of screen appear green, then it's like a blue circle filling most of screen, then...

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Hi there!
There might be a problem on the degausing circuit. This demagnetises the screen every time you switch on. You may also have had a rise in the mains voltage thus magnetising the tube. Perhaps you can try switching off the TV at the wall for 24 hours or over night. If this does not work a repairer will have to remove it manually or repair the degausing circuit. Also make sure that there are no speakers or any magnetic items close to the TV. Good luck,JUS004

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It sounds like your problem is magnetisation of the crt. Try to switch it on and off for 3 times: on for 1 minute, off for 3minutes, on for 2minutes and off for 5minutes. Then switch on and see if the discolouration dissappeares. IF not, then a technician needs to check the internal degauss circuits.

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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.


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Replace D805 (?) Thermistor for permanent fix, manually
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You have a bad connection on the CRT board thats mounted on the end of the picture tube it sounds like, or the socket on that board that plugs into the TV set is intermittant or has a bad solder connection on it. Good Luck

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