Question about Sony KP-46WT500 46" Rear Projection HDTV-Ready Television

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Do not know whether the Tube is going

Our Tv's colours all seem wrong we have tried to set them in but we get a lot of green. The faces of the people are all green. Then there are lots of shade of pink and purple we could not even see which rugby team was playing. Any advise would be appreciated .

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Replace Both of the STK ICs 392-560/570s ck all pico fuses in front of ICs,then adjust focus and screen drives on focus control box.It is located in front of TV behind bottom front panel.

Posted on Feb 16, 2009

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Can dust build up on a picture tube's circuit board cause them to overheat and shut the tv down.

dust will not cause an issue like this in this type of set--RCA? it means a short of some type exists and the set shuts down or blanks the tubes--all you have described as far as appearance is normal.

RCA sets like this can be difficult to repair and also if you Google the model number you will see they have a lot of "problems".

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If your picures are all purple it means that the green colour is missing. TV colour is made up by mixing Red, Green & Blue. Removing Green leaving Red & Blue makes purple. Study the green colour circuit for a fault and confirm that the green gun inside the tube is working.

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How to use 2 switches in back of Mitsubishi tube TV

With any color conventional tube TV, magnetic fields can cause problems with the color. You can have areas on the screen where the colors will be wrong (green faces on people, for example). A circuit in the TV does something called degaussing, which helps to eliminate any magnetic field on the tube face. With a big tube set like yours, that degaussing isn't always 100% effective. Those two switches add in some extra neutralization. You don't need to use them if you aren't having color issues.

If you don't use the switches, leave the direction switch in neutral. If you do have some discolored areas, try all 4 combinations of the switches (north and south, high and low strength) and use whichever setting gives the best result.

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Sony kds-60a2000 has a green tint to picture

I have had the same problem for about 6 months, and never paid much attention to it. I also noticed that when trying to change the menu color, the colors do not show up correctly.

Now it seems to be getting worse, and so I started doing some research, starting with the Sony site. That is when I found out there is an extended warranty for the KDS series (50a2000, 55a2000, 60a2000, r60xbr2, and r70xbr2) TVs because of an optical block issue, until June 30, 2010, no matter when you bought the TV.

You can see the recall here:

It seems they are extending the warranty, but not doing a recall. In other words, they aren't telling anyone, but if you happen to find the information, they will replace the optical block, if necessary. The closest I could find to the green hue issue is a purple haze on the screen.

I don't know if this is the problem, but I have scheduled an appointment to have the optical block changed. I will repost after the optical block has been changed and inform whether this is the fix to the problem.

Either way, the optical block seems to be an issue and would get it replaced whether you need it or not.

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Let me know the symptom in detail.
Green bulb (CRT) gives high bright light and tv goes to standby? Do you see few horizontal (retrace) lines while this happens? If yes, you need to replace Green bulb (CRT) of your tv.
Please mention exact model number of tv to guide you further.
and what IC chip you replaced in tv?

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1 Answer

Philips 109 cm rear projection TV model 43pp925

try unplugging the circuit board thats connected to the green picture tube thats the board in the middle then while the boards unplugged try to power up the tv if it works it means your green picture tube is shorted

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Yes it is repairable. One of two things is wrong. The color wheel is going bad or the DMD board is going bad. These are the most common repairs needed for a Toshiba. I hope this will help.

Mar 23, 2008 | Televison & Video

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