Question about Samsung HC-P4752W 47" Rear Projection HDTV-Ready Television

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SAMSUNG HC-P4752W 47" TV Convergence problem

The problem started about 3years ago. The red,green,and blue colors are off. Someone told me that the STK chips are going bad, so I ordered 2 STK392-010 chips. Just this week I replaced the STK Chips, and no difference at all. Can someone help me find out what is wrong.

Posted by Anonymous on

  • Anonymous Apr 08, 2009

    I found 2 chrisp resistors near the convergence chips. I'm going to replace them to night.

  • bronson_p Apr 13, 2009

    I have the same problem where my tv's red, blue, and green colors trace or dont seem to be in line where they should be.

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1 Answer

Edward

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  • Samsung Master
  • 3,459 Answers

Resistors most likey...look for burnt or discolored resistors near the convergence chips.

Posted on Apr 08, 2009

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2 Answers

To much blue shade in picture


You may need to replace your STK chips in your convergence board. I just replaced mine due to ghosting. Seems to me asd anything that affects your picture quality is caused by bad STK chips. I purchased mine on ebay with a soldering iron solder and a solder ****** braid and paid 30.00 which includes shipping! Took less than an hour. The auction was for the STK392-010 but they had mentioned a 040 chip in the listing in error and sent me both sets. The STK392-040 is a better chip and works perfectly with my HC-P4752W. I had never soldered an electronic part in my life. I am an electrician and a plumber and master install tech. buy the chips. while they are being shipped to you, look at YOUTUBE for videos of soldering and desoldering using braid. You will get a good idea at what you need to do to fix tv! Also look for anything related to the convergence board for this model on YOUTUBE. Sorry so long but want to help as much as I can!

Dec 06, 2009 | Samsung HC-P4752W 47" Rear Projection...

2 Answers

RED CONVERGENCE SCREEN PATTERN BOWING AND CAN'T ADJUST


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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. This is called convergence.

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,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with 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 - TV Shuts down - May also make a constant chirping sound

Problem #2
Another common problem is dull or washed out video.

Your set 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 herebb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jun 13, 2009 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

My hcp4752 started smelling hot now the colors are


It looks like you have a problem on your convergence panel. Look for burned resistors near the STK-* IC's. One or more of the STK-* IC's may be bad. When the resistors get hot they smell but so do the IC's. You can replace the bad parts or you should be able to replace the entire panel then go thru a convergence alignment.

Jun 06, 2009 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

SAMSUNG HC-P4752W 47


There are three main reasons that convergence can still be inoperable after replacing the convergence amps. One, when the amps failed they blew the fuses protecting the power supply from shorts. Two, when the amps failed the yoke return biasing resistors burned open. And Three the Digital Convergence Unit has failed. Once things have gotten to this point it is usually time to have a professional have a look at the set.

Jun 02, 2009 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

TV problem


It sounds like there is a fault on the chroma panel of some kind.

Jul 23, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Double vision


My television is a hc-p4752w and the color convergence is way off. The red and green are not together and curl away from the top of the screen and bottom too. I tried to auto focus with only making the color separation worse. The tv is about four years old with lots of play time...
I am a aircraft mechanic with some electronics training so I don't mind replacing components I just don't know where to start and have no troubleshooting manual for help. Any help would be greatly appreciated!!!!

Jun 28, 2008 | Samsung HC-P4752W 47" Rear Projection...

2 Answers

Now What???


I want to get this straight are you saying that you cant align them
and this is your focus problem or you have two problems that you cant get the convergence and the focus?

it might have been easier just to have the board replaced...
Samsung parts for convergance problem
http://www.partstore.com/Part/Samsung/Samsung/BP9500142E/New.aspx

Jan 28, 2008 | Samsung HC-P4752W 47" Rear Projection...

2 Answers

Convergence Problem inSamsung HC-P4752W 47" Rear Projection


One of the convergence output IC's has burned out and needs to be replaced. If the IC opens up inside then it stops working without blowing any fuses or resistors. The IC should be replaced and the set realigned by someone with experience in convergence circuits.

Jun 22, 2007 | Samsung HC-P4752W 47" Rear Projection...

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