Question about RCA HD61LPW42 61" Rear Projection HDTV
I have a gray area in the upper left corner of my screen. I understand its probable the mirrors in the light engine or the light engine itself. My problem is my extented service plan just ended in november. Ive read that if its the mirrors that they are 4 triangle shaped mirrors that together form a square a it could be that they are lose or out of allignment is there something I can do myself to fix this. I would like to try and fix this, so any and all info you can give me would help!!!!!!!! BOUGHT 11/2003
THANK YOU BRUNO
P.S. MY WIFE IS NOT HAPPY ABOUT THIS, IT TOOK ME YEARS TO TALK HER INTO THIS TV.
Gray or Dark spots are often caused by parts shifting into the light path . Here is the breakdown from right to left of what happens to these RCA DLP TVs... HEAT.
1. The Lamp. There is a fan that operates near the lamp as long as there is heat detected by a thermal
2. Heat shield glass. This is a 19mm x 19mm x 1mm thick heat absorbing/reflecting glass that keeps
HEAT and Infrared from passing into the light engine
3. The color wheel. A 120 rpm motor with Red, Green, Blue Glass triangular pieces glued to a hub with
a position sensor that reports to the light engine what color is currently in the light path.
4. Mirror tube. A fragile arrangement of front surface mirrors glued together to amplify the incoming light.
Most people realize a problem is developing when they start to hear a grinding noise progressively
getting worse. What has happened is that the heat Glass has a hairline crack through it. This allows the heat generated by the lamp to heat up the lubrication on the color wheel motor and breaks it down. The glued glass filters can fly off when exposed to prolonged heat killing the balance and function of the wheel. Next thing effected by heat transmission is the mirror array (my term). Other people have found a high temp superglue that could be used to hold the mirrors together, The problem here is that it can be difficult to position these small pieces together, fit them into the bracket, and not cloud the inside surfaces with the glue. Not impossible just difficult.
People have replaced the color wheel, not too difficult to do, remove a harness and three screws replacement part found online from 2-3 suppliers for around $179.00. The Problem I see is that if you do not find the cause of the failure, (short of actual motor wear) if heat related,
Your part WILL fail again.
What my problem is I cant find anyone who can get the Heat Glass with the specs found in #2. I have been told by repair shops that it is a part of the whole light engine and cannot be bought separately. The whole light engine, If you could even find one around $700.00
FYI: The Light Engine is manufactured by InFocus for RCA
It should be noted that These RCA TV's and many other models have limited production runs and rarely made enough parts for repairs. As with many electronic products, design flaws don't show up until long after warranties run out. Instead of redesigning a flaw in the next production run and trying to perfect a product we the manufacturer just go and make something totally new with a new set of problems. Ok I'm done complaining
Posted on Sep 24, 2008
Sounds more like a lens issue, they are replaceable usually when there is a distortion such as that its the lens on an RCA.
Posted on Apr 09, 2008
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