Question about RCA HD50LPW42 50" Rear Projection HDTV

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Bad Colorwheel I need the procedure to change the colorwheel

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  • Kell188 Apr 17, 2008

    I installed the color wheel. A little nerve wracking, but all in all quit do-able. The color wheel wasn't exactly like the original. Had a ribbon wire instead of standard wires and the three torx screws holding the color wheel to its mounting plate were larger. I would think this will improve the bearing performance, by reducing vibration as the wheel spins.

    Looking around in the back of the TV. I don't think these things are getting enough air circulating around in there. I saw the cheap fan, and its position doesn't give it much room to circulate air. I'm wondering if these TV's suffer from getting too hot! Thus the bulb and colorwheels are failing from heat damage. I'm going to place a fan behind the TV to circulate more air.



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Take off the back of the set. look for the lamp area. to the left of that should be the color wheel. please note you may have to remove the light engine from the set to get to the screws. there should be 2 screws on the color wheel. on some sets the top comes away from the bottom half of the set and you maybe able to remove it that way as well without removing the light engine.
becarefull with the wire and connector goin to the color wheel as it maybe a small ribon cable. if you unplug any connectors they should be easy to remember where they go.
good luck if you need more let me know as i have done tons of these.

Posted on Apr 16, 2008

  • Scott Henderson
    Scott Henderson Apr 18, 2008

    the color wheel could be damaged by heat if your vents get blocked by dust or dirt. you need to keep vents clean. also if you smoke around your set it could get sucked into the light engine and it will start causing your picture to go dark. keeping the bulb cool is a good thing, this will extend the life of it. also turning it on for a couple of hours is better then turning it off after 30 and goin to the store and comming back 15 minutes later to turn it back on to finish your program. its better to leave it run as turning it off and on also takes from the life from it.


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Yes, it is possible to change a color wheel yourself, if you are very mechanically adept. It is easy to get to this light engine, once you get the back cover off the set. It takes a very small torx screwdriver and the color wheel itself is fragile. All that said, I still don't recommend it for most consumers, because it goes a lot smoother when done by an experienced tech.

Posted on Apr 16, 2008


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1 Answer

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if you do not hear a high-pitched whir or a loud buzzing when you start it up, you have a bad colorwheel. if the colorwheel is bad, the lamp won't light. if the colorwheel and the fans are ok, you may have a bad lamp. remove the lamp and check for bulges, black spots, fogging or flaking. also see if there is dust caked on the vent screen on the lamp. if you have any of those, replace the lamp. it is blown.

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