Question about Zenith C32C86R 32" TV

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Bad picuter/color quality

The picture on the screen has a rainbow type effect of Blue,red, green and in the center is were normal picutre quality exists. whats wrong with this TV? The clors I mentioned start the sides in the maner I just described

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Re: Bad picuter/color quality

Ive got the same problem, with my tv picture haveing a rainbow effect, but noticed, when my kids where watching there cartoons, a red flash fixed the colour in the area where it flashed,

im going to make a dvd with red flashes to see if this can fix it...

Posted on Nov 15, 2008

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Re: Bad picuter/color quality

Your problem sounds like it has to do with beam landing, or purity.
In a CRT type tv such as yours this can have many causes, some of which I'll describe.
- The CRT (picture tube) is magnetized, possibly by speakers being placed too close to the tv. Turning off an item such as a vacuum cleaner in close proximity to the tv can also cause the crt to become magnetized.
- The auto demagnetizing circuit has malfunctioned and requires a tech to repair
- The CRT has developed an internal fault and would need to be diagnosed/replaced. This is not worth the cost of repair.
- The yoke and/or beam landing magnets have become loose or faulty. This is internal and would require a tech to confirm or repair.

The only fault which you may be able to fix is if the crt has become magnetized. Check for sources of magnetism close to the tv. That would be such things as speakers or anything with a permanent unshielded magnet. TV's with CRTs have a circuit which demagnetizes the crt at each cold start. Turn the tv off and leave it off for 3 hours and then start it. If the crt is too magnetized or there is a problem with that circuit this may not work. You can also try a different placement, the ideal being the front of the screen pointing either directly north or south.

Posted on Nov 16, 2007

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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.
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