On my RCA HD61LPW42 TV, an usual noise (like a fan rubbing) and a triangular shadow in the upper left corner of the screen caused me to open the back of the TV. I found a segment of the color wheel broken and the "lens" between the lamp and color wheel cracked. I can find the color wheel #212184 but I can't find the part number for the "lens". Is there an on-line parts list for this TV? Please help!
My HD50LPW42 is currently in the shop for repair. Its almost 4 years old and lamp would go on and off so obviously I thought it was a lamp problem. Before ordering and repairing that myself though I called an authorized service tech who came to take a look at it. Diagonosis color wheel....evidently it shuts the whole system down so nothing overheats if its damaged....anyway I feel lucky the problem was found and hopefully nothing more serious is related to it.......will keep you all posted.
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Re: Color wheel and lens
If u are not a technician, better have it check by a qualified one. because doing so might create more problems. service center have special tools and equipment for aligning and replacing these stuffs. just concern
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this might be a noisy color wheel . this is a motorized wheel that produces the color in the set. it could be something else because of your statement of picture is ok. if it the color wheel the set will eventally shut down. this part used to be avalible and fairly easy to replace. it has got harder to locate. The other possibilites includes a small leaky capacitor in the powers supply but that is more like a whine. a tech would have to take the back off and locate the noise.. i believe this unit might have 2 fans and a color wheel. three moving motors.. anything that moves eventally dosnt
it sounds like the lamp or fan. do you feel airflow? Unplug the set and wait. When you plug it up is the whinning imedate. the color wheel generally is the first thing to come on. If it dosent reach speed it will shut down
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?)
They make two different color wheels for the Rca DLP are you positive you got the right one. As usually its a straight forward install no adjusting needed. Post the chassis number off the back of your set and I will try to help you out with it.
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 sensor. 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
Editorial: 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
You may have a dirty or blocked mirror. You can usually take the back off and clean them. If you don't feel confident about it, a repairman can do it for you. If you clean it yourself, I recommend using a good quality glass cleaner and any type of towel that doesn't produce lint. Coffee filters work very well. Don't leave any streaks!
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.
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