Question about Samsung HCM5525W 55" Rear Projection Television

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Trying to refocus a blue CRT

I replaced a blue CRT in my Samsung model HCM5525 big screen tv.
I'am having trouble getting it refocused. can you help me.

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I am trying the same thing. had a fuse go one and now the tv is un-focused. if you get an answer let me know.

Posted on Mar 10, 2008

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3 Answers

Blue lines .


the convergence IC's are failing to perform properly...

you might need to replace them

Mar 26, 2008 | JVC AV-65WP74 Rear Projection Television

1 Answer

I have a WD 65831 Mitsubishi television. I love it and have had NO problems so far with it. The picture and letters on the screen seem slightly fuzzy (out of focus). I had the bulb burn out and I replaced...


Projection TV sets have two very common problems oulined below.

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.
  • No Audio/Video - TV Makes Chirping Sound
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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.

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TV set after fluid change

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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

Dec 24, 2010 | Mitsubishi Diamond WD-65831 65" Projection...

1 Answer

Sony color rear video projection, Sn 9720391, model KP65WS510. Looks like 3D without glasses. Red double words and pict are shadowy


Common problems with rear screen projections. Either you need to refocus the alignment, or you need to have the Convergence IC's replaced. In your owners manual, it should tell you how to refocus the alignment.

Feb 15, 2010 | Toshiba 53H71 53 in. Rear Projection...

1 Answer

It a green color with red and blue shadowing behide


The three guns need to be refocused or the screen is slightly out of position.

Feb 10, 2010 | Philips 55PP9401 55" Rear Projection...

1 Answer

Distorted color and half-circles at top and bottom of screen


not sure if this will help but you might have to replace the stk and convergance board part # BP95-00142p.. you might when after replacing that part refocus your tv... Price for part should be 100.42 plus shipping cost or try to find a tv shop near you for part number... Good luck

Aug 10, 2009 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

SAMSUNG REAR PROJECTION TV


the convergance amplifiers have failed and need to be replaced also some resistors and pico fuse have failed as well. the amplifiers are STK392-040 you will need to have a tech replace them. this is the most common repair of rear projection TVs. the cost may vary from tech to tech but the ICs are about $60 each there are two of them and they both need to be replaced.

May 25, 2008 | Televison & Video

1 Answer

Toshiba 50H81 Projection TV


youre convergence ICs need to be replaced there are two of them they are both STK392-110 you can get replacement Ics and free instalation instructions at the following link.
http://servicemanuals.vstore.ca/

May 24, 2008 | Toshiba 50H81 50" Rear Projection...

1 Answer

Red green and blue lines


Most projection TVs have an option to refocus. For example, my Sony rear projection TV has a button on the front for focusing the lamps. Try finding this button or option in the menus with your remote. Projection TVs actually use three lamps, one red, one green and one blue. These need to line up exactly in order to form a good picture, and when they come out of focus, you see the edges which sometimes has the effect of a 3D image when you aren't wearing 3D glasses. Hope this helps!

Sep 07, 2007 | Panasonic PT-53WX54 53" Rear Projection...

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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