Question about Samsung HL-R4266W 42" HDTV-Ready Projection Television

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Humming noise from inside.

I was watching t.v and all of a sudden, the color went out and the t.v shut down. Now the t.v will attempt to turn on, with a buzzing noise, and on the front of the T.V, the lamp indicator flashes. I think it could be the Light engine?

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  • Samsung Master
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Sounds like the color wheel

Posted on Apr 26, 2009

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Posted on Jan 02, 2017

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Samsung HLR5078W pop sound followed by a loud buzz then shut down


Your lamp burst. This model uses a lamp housing which does not have a filter screen on it. When the lamp bursts, hot pieces of glass and mercury (very toxic) drop straight down into the cooling fan below it. Although FixYa.com (implies I'm suppose to tell you how to fix it) I am going to tell you to call a servicer and have them clean that mess out of there. It's a health issue, I don't want someone unknowingly exposed to mercury on my watch. Let the servicer know what he is getting into. I hope this helps.

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nost likely the color wheel, They are famous for having a piece come off the wheel which will cause a very loud humming sound.

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Color wheel or did i break something else?


Usually a bad color wheel will produce a high pitched sound or even a grinding noise; some sets may actually shut down if the wheel is bad or shattered.

To determine if you have a bad color wheel:
  1. Turn set off and wait for main fan to shut off.
  2. Unplug the set.
  3. Remove the lamp door and then remove the lamp.
  4. In the direction the lamp faces you will see a round opening; the color wheel is facing this opening. It is a round plastic wheel with colored segments—we want to look to see if any of the segments are missing; a shattered wheel should be clear to see.
I have also posted the general instructions for Do it yourself replacement of this part in the TIPS AND TRICKS section of this site.

I will attach a photo of the color wheel for you to know what you are looking for----

If you have any questions feel free to respond to this posting.

If this has helped you rate this solution as I do this here for free.

SD TECH

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Jan 01, 2010 | Samsung HL-R4266W 42" HDTV-Ready...

1 Answer

Samsung TV made a big ''POP''


replace the color wheel

Sep 13, 2009 | Televison & Video

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I have sort of the same problem...there was a loud snap(kind of electical spark like) then the unit started humming loudly which changes sound as you move the unit around. The picture remains clear and the fan is quiet in shut down mode...still the wheel you think?

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Your color wheel needs to be changed. Mine just did the same thing. I changed mine, and the buzzing sound went away, however now my picture washes out with light or yellow colors. The darks look green and purple also.

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i have had this happen to me several times in the field, and if it is what i think it is, you are not going to be happy =(

inside of a DLP type TV, there is a device called a 'color wheel'... it is essentially a disc made up of different colored glass that spins really fast. this disc has 3 or 6 (depending on make/model) pieces of colored glass like pieces of a pie affixed (read: glued) to a hub.

what happens sometimes is that one of the pieces of colored glass flys out of the hub, and causes a massive unbalance in the spinning wheel, which causes the hum/vibration, and since the colored glass is missing, the colors will be all messed up.

if this is what happened, then your television will require a new DLP engine.

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The color wheel is the most common problem in DLPs that cause noise. To determine the cause: Turn the set off. If the noise goes away after about five seconds, then, the problem is the color wheel. If the noise goes away one to two minutes after shut off, then, the problem is a fan. You can find an Authorized Servicer in your area that can tell you the price of repair, by clicking on the Samsung link: http://www.samsung.com/Support/ServiceLocations/index.htm

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