Question about RCA HD61LPW42 61" Rear Projection HDTV

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RCA HD61LPW42 61 in. Rear Projection

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



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Re: RCA HD61LPW42 61 in. Rear Projection

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

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

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Re: RCA HD61LPW42 61 in. Rear Projection

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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The upper left corner of the screen (triangular shape, approx. 8" vert. and hor. from the corner) is showing dimness, not completely dark but maybe halfway. What might be causing this? Thanks.

This is your mirror tunnel. Light passes through the mirror tunnel to the DLP. The tunnel is made up of 4 mirrors glued together. Over time the glue comes apart and the tunnel shifts.

It starts out like this: |_|
and when the glue breaks down it does this: \_\

So the light, instead of passing through the mirror tube, goes through the ends of the mirror, so you get SOME light but not all.

I contacted RCA and they said:
"Ok, well sadly they do not offer the light tunnel anymore, which is what you need. Sadly you would be rendered to get a whole new light engine assembly. That would be the D.N.D module, light tunnel,color wheel,optic spanner, and oci. mirror. Your best bet would be to search ebay for a broken engine and replace it that ways. "
Awesome support! NOT! (That is the actual full text of the message from RCA support.)

I have some high temp epoxy and will be attempting to re-glue the parts myself.

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Upper left corner is green

Check the mirror in the TV..may have come loose.

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On light goes on and off three or four times but no picture or volume on a RCA HDTV MOdel D52W20

Probably two bad capacitors on the upper left-hand corner of the main circuit board when viewed from the back of the set. If you can see them and they have a bulged top, replace the two caps to fix.

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There is a shadow in the upper left corner of the screen

someone is going to have to look inside by either removing the rear upper part of the set or removing the entire front screen---neither is easy to do. But considering your trouble I would not be surprised if the mirror is cracked---the entire front screens would have to be removed to replace the mirror--special mirror and special handling--I have seen several break when someone is not careful putting in.

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I have a 5 year old RCA 61LPW42 HD DLP television. A few months ago a small dark shadow appeared in the upper left corner of the screen. Over time it has creeped down and become larger. Still starting...

It's the light tunnel. The tunnel is a square tube made up of 4 mirrors glued together.

It looks like this from the side: |_| (with a piece on top too.)
When the glue breaks down, it shifts inside the little mirror holder. The shifted mirrors looks like this /_/ what you are seeing is the shadow of the tilted mirror tunnel.
ON the RCA's there's not a good fix.

RCA's response:
"Ok, well sadly they do not offer the light tunnel anymore, which is what you need. Sadly you would be rendered to get a whole new light engine assembly. That would be the D.N.D module, light tunnel,color wheel,optic spanner, and oci. mirror. Your best bet would be to search ebay for a broken engine and replace it that ways."

That is the ONLY response I got from them.

I took the set apart and found the 4 tiny mirrors. I will be attempting to epoxy them together. (The set is dead anyway, why not try?)

Apr 04, 2009 | RCA HD61LPW42 61" Rear Projection HDTV

2 Answers

Blurry partial picture on a 42" rear proj tv

There may be dust on Lamp or at front screen. why dont you open rear cover of TV and give a close look?

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I am an RCA tech and can tell you what your problem is. There in an appeture tunnel to the left of the color wheel. The light from the wheel passes thru this tunnel. The tunnel is made of 4 rectangular mirrors which are pieced together in a square. What happens is that the mirrors shift and instead of being square they become rectangular. The only way to fix this is to either replace the light engine of repair it. I take the engines apart and repair the mirrors, however I strongly advise against it because the entire engine must be taken apart to get to this tunnel. I guess this isn't the solution you wanted, but it may save you the money of buying unnessesary parts which you can't return and will have lost that money. If you go thru RCA service center, they can send your engine back to a repair center and rebuild it for you. Hope this helps you.

Jul 19, 2007 | RCA HD61LPW42 61" Rear Projection HDTV

6 Answers

Shadow on upper left corner

A little late and you've probably already solved it or are just living with it or are disgusted with it and have discarded the tv. But, in any event - here we go. The "light tunnel" bends the light toward your screen. At the beginning of that tunnel there is a plastic lens. The lens is secured with four little feet that a part of the lense. The lens is flat on the side closest to the screen. It fits on the end of the light tunnel closest to the light. The lens probably has a burnt spot. Probably the burn is caused by excess heat which is either a result of a fan failure or a one-time situation where the power went off while everything was hot and there was no cool down cycle. Another item to look at is in the light path before that lens. There is a small "window". It's actually a very thin piece of glass (about 1"X1") held in place by a horseshoe shaped clip and one screw. I think that glass has the purpose of keeping heat away from that plastic lens. If that glass is broken I think you'll have a heat "leak" and the plastic lens will continue to get worse.

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Shrinking Picture

sounds like your main power supplyis going bad . It supose to be 130 dc but I'll bet its down to around 90 to 100 volts!!! its probably the main filter cap or the regulator IC . hard to say without measureing the b+ good luck

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