How do I adjust light tunnel on Mitsubishi 52 inch dlp tv

This tv have a colors wheel design in it.Flashes or discolors on this shadow?Tv making any humming sound or motor noises.Yes,mean the tv colors wheel is dying and spinning out of it motor axis.The color wheel,is the problems.Colors wheel sit way back of the tv,must take out alot of mechanical parts to get to it to replaced.U have no mechanical skills,don't tries this.Hire a tv tech to replace the colors wheel.

look at this link... there if a forum of this problem were is a image of what might be your problem



here is explain on illustration


http://www.fixyourdlp.com/forum/viewtopic.php?f=12&t=1204&p=4057&hilit=shadow+on+tv#p4057

You need to replace the light tunnel.you will need to remove the lamp and color wheel along with the lamp housing and fan housing to replace it .If you are not comfortable taking things apart you might want a tech.

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..
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There is a piece connected to the color wheel assembly called a light tunnel. It is between the color wheel and optic assembly. There is 4 mirrors inside. One of them probably got dislodged when the wheel shattered. Sometimes they can be repaired using high temp glue or you may have to replace the tunnel.

Probably 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?)

Your light tunnel is bad. This requires partial disassembly of the light engine. Suggest contacting a tech

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?)

DLP TVs work projecting light throught a tube covered with mirrors, called the light tunnel.

The gray shadow it is something in the middle of the light tunnel, probably a mirror that has gone out of place when you moved the TV.

Its your light tunnel