Picture no longer appears to be as sharp and clear as when new. I have been told that it may need a new bulb as we have own this 51" read projection flat screen for over 4 years and it is rarly turned off. The bulbs appear easy to purchase, however are they easy to replace, or do I need an expert to do this repair?
Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc.
You may even see halos around images.
What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.
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