Question about Optoma RD65 65" Rear Projection HDTV

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Image/mirror adjustment I posted on the site already but thought I'd send to you directly. The image on my screen isn't centered or flushed with the screen. How do you make adjustments?

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Ah, it seems that you might very well have a few voltages off as there aren't many other adjustments that can be made without seriously offsetting quite a few mechanical tolerances. Has the set been dropped or bumped severely? Moved recently? If no to the above questions, you really should verify all power supply specs before doing any "precision bending". Many times, a set that has the symptoms you describe just need work on getting the power supply a "green light" before taking any other action...accordianman

Posted on Jun 25, 2008

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After the DMD replacement, certain screen alignments should be done with all projection TVs. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
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How do I fix double image on Sony led 46"


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I have a Mitsubishi RPTV. Everything looks fine except for the blue colors look blurred. I have tried software convergence but the blue still looks blurred and strange. What can I do?


ADJUST THE ELECTRICAL FOCUS. AND THERE IS A MECHANICAL FOCUS ALSO. SET THE ELECTRICAL FOCUS BY LOOKING DIRECTLY INTO THE TUBE AND ADJUST IT SO THE TUBE SURFACE IMAGE IS SHARPEST. THEN LOOKING AT THE REAR OF THE SCREEN ADJUST THE MECHANICAL FOCUS, ON THE LENS UNTIL IT IS SHARPEST. ALSO IT MIGHT NEED A CLEANING OF LENS&MIRROR. DIRT AFFECTS BLUE LIGHT FIRST.

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Picture bounces


Chances are the mirror is out of allignment or loose that projects the image on the screen from the lights below. This is a delicate adjustment that should be done by a professional service center. I hope this helps, good luck.

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1 Answer

Sony lcd projection tv vertical adjustment KF-50E200A


Try changing the settings for the video formats, widescreen, regular, and all that. There are angle mirrors in the back of the tv that direct the projected image on the screen. The mirrors are positioned such that if, says, a piece of a metal bracket or something falls down inside the projection area, it'll fall right against the projection lens and block the image. Open up the back of the tv and follow the light path from the screen backwards to its source and make sure there's no debris in the projection path.

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Mitsu 65" DLP-picture seems washed out


Most likely cause of your trouble is dust on the small mirror inside you set. Your DLP set has 2 mirrors not including the DLP chip itself which has about 500,000 tiny mirrors. The 2 mirrors reflect the DLP chip image to the screen you view. The first is the main suspect it's about 4inches by 7inches. It's mounted on the bottom center facing backwards. This mirror faces slightly up and somtimes after time dust, smoke, dirt settles on it . The second fills the space of the entire back of the cabinet but it faces down and takes alot longer to get dirty.
The compartment is sealed but dust seems to find it's way in. If you remove the screws that secure the screen assembly from the top , sides and bottom. Make sure to have a friend available the screen assembly is delicate when it's not mounted to the cabinet. You can remove and clean the mirrors. These mirrors are glass and you can use glass cleaned. Don't use glass cleaner on the screen it's plastic. You can clean it if necessary with plastic cleaner only. Probably not needed.
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2 Answers

Double Image Red and Green


Here are some of the most common symptoms and example photos of a convergence problem

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
f0900cb.jpg

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.


2c07611.pngSolution


You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

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2 Answers

My panasonic big screen screen has shadows and fuzzy picture


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

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1 Answer

Shadowy images


Send me more information, but of what I understand from above, either convergence needs adjusting OR dusty mirror and lens behind screen.

May 03, 2008 | Sony KP-65WS510 65" Rear Projection...

1 Answer

Image problems


this might sound odd but you might have a bug or something on your mirror or have you bumped the front screen? the freznel and lenticular screens could have seperated. i would contact a local repair shop for an in home service call just to verify these 2 possible scenario's.

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