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Guns on their last leg- color fading

Asked a question yesterday, but did not clarify the exact product. Just wondering if the 'guns' in the televisions were interchangeable.

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If you are asking about Guns in rear projection tv then answer is No.
Rear projection TV has 3 Guns (CRTs), red-green and blue and each gun has its unique color phosphorus coating to produce its mono color (red /green /blue) and these are not interchangeable.
Need further info, let me know.

Posted on Oct 23, 2008

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I have a Sony KDS-R60XBR1 projector tv and the blue color seems to be fade out. Is this possibly the light bulb problem?


Yes, either the blue gun is on its way out or there is a problem with the video driver electronics for the blue gun.

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Picture green with color off mo.av-56p575 jvc


That is a common symptom in projection TVs that use tubes or "color guns" As the set ages the emission in the picture tubes (there are three) begins to slowly fade.

This is unfortunately a normal thing for those older projection sets. A set of tubes will last anywhere from 20,000 to 40,000 hours of operation then they are simply worn out. They can be replaced but I don't recommend it due to the age and technology version of your set. The newer type big screens use a different principle. They either are LCD or Plasma these days. The advantage of the LCD (Liquid Crystal Display) is they are very low in power consumption. The disadvantage is that you can never get a true black, only close. On the other hand the Plasma TVs are more consumptive of power but will give a very sharp image with true black levels. The choice is up to you but I suggest you replace your older television.

Zashiban

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Wondering if you got my response yesterday.


really sorry. i missed to reply you among a lot of requests

well this happens do to a faulty color wheel sir.

and you will need to see for some kind of loose fittings and will have to replace the full wheel if needed.

Aug 13, 2008 | Philips 51PW9303 51" Rear Projection...

1 Answer

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HELLO. it sound's like you have a cold solder problem.!!! what that mean's is that when the set get hot .!!! it lose's it's contack.!!! you might try going over the chassis .!!! soldering the conteck's.!!! with a low watt. solder gun.!!! not over 40 watt's.!!! and use 40/60 rosin core solder.!!! hope this help's you .!!! "GOOD LUCK"

Mar 14, 2008 | Hitachi 50UX58B 50" Rear Projection...

1 Answer

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Your tv has three crt guns that correspond to how it makes colors.

If its just one color acting weird it might be the crt gun for red. That sucks cause it will be hard to replace. I think its possible to fix it but it might not be worth it... Sorry...

Feb 20, 2008 | Mitsubishi WS-65807 65" Rear Projection...

1 Answer

JVC I'Art Pro, Color Fade


sounds like two separate problems. color fade ?
green gun/band = bad convergence ic

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