Question about Hitachi 51SWX20B 51" Rear Projection Television

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Gettung double imaging with blue and yellow

Getting double imaging with blue and yellow colouring

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Double check the model number---there is a 61swx10b---All of these sets use two STK-392-110 convergence chips.

Check my recent posts and you will find similar ones related to your TV. Both chips need to be replaced and you can buy them on Ebay for less than 20 dollars for a pair including shipping. Depending on how they fail there may also be a damaged resistor located near them.

If you cannot do this repair shop around your area as most shops will try to charge 300-400 for this repair.
Make sure whoever you get replaces both chips or you will shortly have the same problem again.

I have done hundreds of these sets and here charge 200-250 for this kind of repair. If a shop tells you it has "to go to the shop" keep looking as any good tech can do this repair right in your home in about 1 hour.

I hope this information has been helpful and if you have ANY questions or need advice contact me.

SD TECH

Posted on Sep 25, 2009

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Posted on Jan 02, 2017

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This is a known issue with the model that you have listed. The repair kit is here: http://www.tvrepairkits.com/xcart/57h82/ You should be able to solder, the kit comes with diagrams, photos, parts and support.

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Repeating images on laser printerThis likely means a faint ghost of the main printout at a distance equal to the circumference of one of the rollers or photosensitive drum.

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I have a VT465 and the projection back ground is yellow and I can't get it to be white


If you are talking about the actual image that is coming from a laptop being yellow instead of white, then this is caused usually by a bad signal cable running between the computer and the projector.
To be more specific: All colours in a projector get made up in some way between red, green and blue. White is all of these colours at maximum, yellow is made by red and green at maximum but no blue. If your image is Yellow when it should be white, then the blue signal information is not reaching the projector. This can also happen within the projector or computer itself but is less likely. If your using a VGA cable (15 pin cable) then blue is run through pins 3 & 7 (positive and negative respectively), see if your cable is either missing these pins on either end or if they are bent, although it's more than likely within the cable itself. You can test this theory easily by trying to put something blue on screen, if the blue signal isn't getting through then it'll appear black.
If changing the cable doesn't solve the problem try testing the computer by trying to use a different one, and test the projector by plugging in a monitor or another projector.

If you are getting a yellow screen without sending signal and just trying to get the "no signal" or "no input" screen white, then this won't be the case.

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1 Answer

Double image and colour


There are two common problems with these sets.

Problem #1) Convergence

Symptoms:
  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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exact same problem.. please email me if you find out the fix..

frmeek@yahoo.com

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Bright yellow


I can't imagine a setting that would cause this - It sound more like some sort of fault with the projector's blue LCD panel. (The image is created from a mix of red, green and blue light. If you loose the blue, everything will look yellow.)

Is it capable of showing any shades of blue?

Using any graphics or photo-editing software, create a solid blue image (R=0, G=0, B=255 in your colour settings) and if possible, display this full-screen. Is there any output from the projector at all when you do?

If not, it sounds like it need a professional repair.

Matt

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3 Answers

Double image, blue and yellow images


convergence ic are going or have loose connection in the convergence amp ic area.
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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