11/09/14, 01:48 PM
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Join Date: Dec 2008
Location: north Alabama
Posts: 10,714
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I can only speak in generalities, since I can't see exactly what is going on.
If the cooling fan stopped, the light would overheat and a thermistor cut power to it to prevent a fire. Once it cooled down, it would work again.
The fact that it stopped indicates you may have a simple cooling fan issue. A single drop of oil on the shaft and bearings may extend the life of it a few months.
If the problem is the color wheel, colors might be blurred or off-color.
In general, modules are replaced these days rather than individual parts. The module you would be replacing is called the light engine. You can do a web search. New, the cost is high enough ($800+) to make buying a new set a better proposition. If you can find one aftermarket for around $200 it might be worth a shot attempting a repair - understanding that other components could fail within the year.
Your model is old enough that replacement parts are hard to get.
In general, think of the lifespan of todays electronics to be about three years. If you REALLY like a particular product, look to buy a backup or parts unit at the end of that period when there are sales. Otherwise, treat electronics as commodity consumables and don't over-invest.
If I were you, I would attempt to oil the cooling fan and see if that worked. If it didn't I would consider the unit a potential total loss and open up the light engine to find the color wheel or anything else that could be causing the problem. I would oil if I thought it would make a difference and was even possible. If it didn't but I found I could remove the light engine successfully and place it back properly, I would look to find a replacement with a total cash outlay of $250 or less. Otherwise I would strip for parts (the screen on a rear projection tv is a huge fresnel lens than can be repurposed, etc.) and trash and buy either an LCD or projector tv.
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