Question about Samsung HC-R4755W 47" HDTV

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Picture problems and need service manual.

Picture is a bit blurry, self focus is not working and blue halo sometimes around people's heads. TV repairman says needs convergent board replaced. I would also like to have a copy of a service manual for this T.V. Thanks!

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  • Anonymous Mar 17, 2009

    my 47 in projection tv is very cloudy it's like looking through a fog the inside screen has vbeen cleaned and the miror and still no improvement seems like all the color guns are working

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Http://www.justmanuals.com/samsung-projection-receiver-hcr4755wx-parts-service-p-25530.html

$9.99

Posted on Oct 28, 2008

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1 Answer

Remove purple haze around edges


The set needs to be focussed and reconverged. The red and blue images combined make a magenta/purple image. Adding green makes it white. Depending on the type of TV, if it's a CRT projection TV then there's an electronic focus control for each of the three tubes as well as the mechanical adjustment of the optical lenses. Given the description, then I'd have a look at the electronic focus first. A sudden shift in focus suggests that something in that circuit has given out. This would cause the red and blue images to go soft enough to create a halo around objects on screen.

Sep 12, 2014 | Televison & Video

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Sony KP-41T65 41" rear projection tv with convergence issues on part of the screen. And screen is generally slightly blurry. I received this TV already broken (had the red blinking light issue) which I...


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

Convergence problems are very common on all Projection TV sets including Sony,Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit wiith instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms
  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted or warped
  • No Audio/Video - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....
  • Dull looking picture
  • White looking picture
  • Halos around objects
  • Red/Orange looking picture

You can see some more examples and find a fix here
bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Apr 03, 2010 | Sony KP-41T65 41" Rear Projection...

1 Answer

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Ur convergence is dead.Must replaced 2 Convergence ICS,and some or all the resistors.Know how to solders?Buy a convergence kit Tv repair World.com,Tvrepairkits.com to repair it ur self.The shop will cost u $300 for parts and labors.

Feb 16, 2010 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Blurry Picture


I know these models came out around 2001, and I'm afraid that the problem sounds like it is related to the bulb going bad.

This article outlines how many TVs from around the turn of the century have had similar problems to yours.

I know bulb replacement is an option. You may want to call around to TV repair shops and see what your options are. In the end, though, it may be time to start saving up for a new TV.

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You have a focus and screen control box it has 3 controls on top 3on bottom these are the controls for Red-Green-Blue screen drives and for focus to each tube. IT should have Focus /Screen on it.

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The picture is blurry. does anyone have a solution to this or has anyone had a similar problem.


I have a blurry screen and the top of it the picture is curved a bit. I was told to adjust the focus knob but I don't know where that is in the back of the TV. I took off the back and couldn't find it. I also tried to adjust the manual convergence and the red would not adjust only the blue would align. Any suggestions.

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1 Answer

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A halo effect usually means the coolant in the CRTs need replacing in the effected color usually blue goes first followed by green. red seems to be less prone for some reason.

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1 Answer

Blue Halo Across screen


Hello Damianian, I too have this hdtv and had problems with the convergance and self-focus within the first year of ownership. I called Samsung within the waranty period and they sent out a tech who replaced the convergance board for free and did the manual convergance in my home. After this, with the new upgraded convergance board installed, the self-focus was not necessary anymore so I turned it off. Some time later the convergance needed done again so I called to get a price on them coming out again to do it. I didn't like the quote they gave me over the phone (around $200.00usd) so I looked for a Service Manual online and found one on an Ebay store for a total of $13.00usd including shipping. I now perform the manual convergence on this set myself and it's easy to do.
Anyone wanting to get a Service Manual for their hdtv or other technical device should check these guy's out. They now have their own website. http://www.thecdguyz.com/
I hope this helps, good luck!

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1 Answer

Blurry Image problem with Mitsubishi WS-55805


Hello, if you want I can supply you with the service manual, please leave your email. Best regards, Arpi

Aug 14, 2007 | Mitsubishi WS-55805 55" Rear Projection...

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