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

7 Answers

HC-P4752W - IC Replacement vs Convergence Module.

I've seen a few postings here and elsewhere on the net suggesting people replace the convergence ICs or the entire convergence module when experiencing convergence problems. I purchased a service manual for my Samsung HC-P4752W rear projection TV and it appears as though the ICs and the convergence module are 2 separate things. The convergence module appears to be a smaller metal encased board located on the main board and the 2 STK392-010 convergence ICs are pretty big with large heat sinks attached and are located on the sub board. The impression that i get from reading different posts is people are saying the convergence chips are on the convergence module and the cheaper fix is to just replace the chips and a few resistors instead of the entire module. Am i missing something? In other words, replacing the chips would have no affect on a faulty convergence module and vice-versa.

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  • Andy Angrick Aug 20, 2007

    I just wanted to let everyone know that on this particular Samsung model (HC-P4752W), the STK392-010 ICs are located on the SUB board. It was a pain to get the board out, but once i replace the 2 ICs and put everything back together, it fixed the problem. In my case, the original problem was the blue color was out of whack (looked like top was curved down towards the center with the bottom being relatively straight).

  • winder Nov 11, 2007

    I have the same model HC-P4752W with same problem. Could you give some hits on to remove STK392-010. Did you replace both chips. -Thanks

  • Andy Angrick Feb 12, 2008

    I'm not sure if that part number is the pc board where the STK chips are located. On my module those chips are on the main board itself and not on a sub board. STK392-010 is the part number for the chips and they are relatively cheap. Replacing them is kind of a pain but its doable. I think the hardest part was getting the board itself out of the TV.


  • shwaa Apr 10, 2008

    I have the same problem, but mine is with the red lines. In the service screen, I can move the red lines around to line them up just fine horizontally, but cannot move them at all vertically. I am assuming that this means that the IC chip is bad that controls the vertical alignment. Is this true? Anyway, I was wondering where to get the service manual/diagram of the IC chips and board, and instructions for replacing the chips (do they need to be saudered, or just clicked in, etc...). If anyone can help, it would be appreciated greatly.

  • fred77 May 16, 2008

    i have the same problem with the blue color bowing done on the screen. did the ic replacement fix it? and were did you get the parts? is there a service manual available?

  • james163 Jun 26, 2008

    the three colours r all out of sync on my samsung sp42w5 , whats the prodlem there and how do i fix it , is it the chips? if it is does any one know the part numbers and where to get them

  • Anonymous Aug 10, 2008

    How do I change the convergence board in my Phillips 50 inch TV model #50PP902017F. Where is it located and what does it look like? Where can I purchase a convergence board and what should it cost?

  • grobin54 Nov 08, 2008

    How do you get the main board out of the set? I could only find 3 screws at the rear of the board. Can't get the board out. Feels like something fastened in the center. Any help would be greatly appreciated.

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The colors weren't lining up correctly on my HC-P4752W which is only about 30 months old. I did a little bit of research and got ahold of the people at http://servicemanuals.vstore.ca/ They recommended replacing the IC's as well as the IC resistors. I purchased the replacement parts from their site and made the repairs myself. I should mention that I didn't have any previous soldering experience. The repair was easy and a complete success. You may find replacement parts elsewhere for slightly cheaper but what you won't find is the prompt and detailed customer service that they provide. They gave me there # and said to call if I had any questions before or during repair. I took advantage of their services and got answers every time I called.

Posted on Jul 07, 2008

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Posted on Jul 12, 2011

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How do we go about adjusting the conversions?

Posted on Nov 16, 2008

Anyone know where | can get a replacement convergence board from?? thanks

Posted on Sep 01, 2008

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I would reccomend replacing the whole board. I tried the IC replacement, but ended up getting a DOA IC and doing a whole lot of work for nothing. Installing the entire board costs about $150, but only takes about 15 minutes. You get newer, more reliable aftermarket parts, and you don't have to spend any time meticulously soldering or chasing circuit board gremlins. after installing the board, I bought a service manual on ebay for $5 and made some slight adjustments to convergence, which took another 15 minutes, excluding the 30 minute warm up of the television. If there is a convergence problem with the board, just send it back and get another one.

Posted on May 29, 2008

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Any possibility to email/ftp me the service manual? Also, do you know the part number(s) of the ICs? Why would it be bad to replace the whole board (BP95-00415C) or is that even the whoel board? Am I way off?
Thanks in advance.

Posted on Feb 12, 2008

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  • 192 Answers

The older sets had a convergence PCB (The ICs were on that board and it had a convergence module (The memory of the convergence settings are on that board, do not replace this module if at all possible). Your set has the convergence ICs on the sub PCB or the deflection board. Replace the ICs.

Posted on Aug 12, 2007

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May 12, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Samsung hc-p4752w


Sounds like convergence amp ic's
i dont have any part number for that model.
Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929
Or send to ptscorp.com
http://www.hdtvoice.com/voice/index.php?s=
good luck
please mark the post with a fixya

Mar 14, 2008 | Samsung HC-P4752W 47" Rear Projection...

2 Answers

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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.

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