Question about Samsung HL-R5678W 56" Television

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Replaceing light tunnel

I am getting a shadow about 2 in wide running down the left side of my tv. i was told my a samsung tech that i don't need to replace the entire light engine, but just a small, sheaper part called the light tunnel. any service repair centers around me have no idea what i'm talking about. i'm looking for some instructions on how to do it myself.

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SOURCE: replacing light tunnel (instructions)

Hi, if you did not get help until now, i can send you step by step instructions and photos how to do it. I did several of these and it is not a big deal.But you will have to take apart a very sensitive optical device and if you are not confident that you can do it do not start this.bp67-00291a is the part number for the light tunnel.post a message here if you need that file with instructions

Posted on Jul 25, 2007

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3 problems 1. TV shuts off and on automatically. 2. 2 inch band on left side of screen 3. No picture at all


The band or shadow on the left side of the screen definitely sounds like a defective light tunnel.As for the intermittent pix and shut down this could be the lamp if you have not already changed it.

Oct 15, 2009 | Samsung DLP HL-P5663W 56" TV

1 Answer

My dlp tv has a shadow about 6'' wide and full ht of tv


Hello: The problem is that a small mirror on the light tunnel has fell off causing a shadow in the picture,. In the past the only way to repair this problem was to replace the entire Optics Engine. But Samsung decided it was replacing entirely to many light engines so they decided to allow and train technicians on how to do it. It involves removing the color wheel and behind it is the light tunnel where light from the lamp shines on to a maybe 1 1/4 inch small block with three mirrors on all sides, your problem is that one of these mirrors has come loose from its side, causing a shadow with the pic still in the background. So if you call a technician to come, if he has'nt had the training from samsung on how to do the procedure then he will want to replace the entire optics engine which is the expensive way of doing it.
So when calling as if they know how to replace light tunnel. There are some adjustments that also needs to be done once it's replaced. To verify what i am saying go to this site to find out more. http://www.avsforum.com/avs-vb/showthread.php?t=758625

Call if you need more info will be glad to help..
Delhielectronics@live.com
Phone: 702-418-1389

Sep 26, 2009 | Samsung DLP HL-P4663W 46" Rear Projection...

1 Answer

The left side of the tv has a shadow on it


You have a bad Light Tunnel and needs to be replaced by a trained service tech. I bet you have a Samsung. If it is a Samsung there is a recall and a tech bulliten on this problem. Samsung might pay for the repair. If they resist ask for the ECR group and mention the Light Tunnel issue. This is not a part you cannot replace yourself.

Jul 12, 2009 | Televison & Video

1 Answer

I have a dark shadow down one side of the screen


replace light tunnel = use service manual for procedure....T.

Dec 13, 2008 | Samsung HLP6163W 61" Rear Projection...

1 Answer

Two inch shadow on tv


Change the input to AV1 or AV2 with no signal and see if it's still there, if it is you might have a defective light engine in which a lot of manufacturers will warranty. This can be repaired in the home but some shops preferr to take them in, try for the in home co's first. Just a word to the wise, DLP's do not last as long as you may want.

Mar 19, 2008 | Televison & Video

1 Answer

56 inch Samsung TV


This shadow is called by the light tunnel in your optical engine. You can have someone come out and try to fix the light engine. I am an authorized samsung tech and about 80 percent of the time I can rebuild the light tunnel. If the tech can not fix the light tunnel you would have to have the optical engine replaced. The light tunnel is something you would not want to attempt yourself. At least you can explain to a shop what your problem is..if they have not heard of this call a diffrent shop.

Feb 08, 2008 | Samsung HL-R6167W 61" HDTV

1 Answer

PICTURE SHADOW


Search for "Light Tunnel".

Feb 05, 2008 | Samsung HL-R5078W 50" HDTV

3 Answers

Left side of television just started having a shadowing problem?


I have the same problem and was told by a technician that I need to replace the light engine. Probably around $ 700.00.

Oct 15, 2007 | Samsung HL-R6167W 61" HDTV

4 Answers

Replacing light tunnel (instructions)


Hi, if you did not get help until now, i can send you step by step instructions and photos how to do it. I did several of these and it is not a big deal.But you will have to take apart a very sensitive optical device and if you are not confident that you can do it do not start this.bp67-00291a is the part number for the light tunnel.post a message here if you need that file with instructions

Jul 09, 2007 | Samsung HL-R5678W 56" Television

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