Question about Samsung HCL552W 55" Rear Projection Television

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Convergence amp ic

How difficult is it to replace the convergence ic's ? Is there any other options on the set that be used to adjust these setting?

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Depends on how good you are at soldering, you may consider sending the board into ptscorp.com
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


Posted on Mar 20, 2008

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All of the sudden the picture is very ghose like. I see two of everything, there is about an inch between figures and letter.
The top of the screen are bowed. My warranty just ended in
Feb of this year. Any suggestions as to what the problem could be and the cost?

Posted on Jul 10, 2008

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My tv is a magnavox and we bought it about 3 years ago and it is now showing like a double picture the color is hazy and pinkish looking the model is 51MP392H/17


The problem of your unit is the convergence. Try to adjust it using the original remote control in the setting menu, then goto the convergence section adjust the red and blue convergence, you should move red and blue UP, DOWN and LEFT or RIGHT, if you cannot move them far enough the convergence IC is defective, replacing this IC will restore the original setting of your tv. This convergence IC is attach to a large aluminum plate it is the heat sink this IC has a marking of STK-#### followed by numbers, remember be careful when replacing this IC you may accidentally tampered or damage the PCB and cause much damage to your unit. Or you can contact a technician to do it for you and save you from stress good day and best regards. Try to check this link for the convergence http://www.google.com.ph/search?q=convergence+ic&hl=tl&sa=X&tbm=isch&prmd=ivns&bav=on.2,or.r_gc.r_pw.&biw=798&bih=472&ech=1&psi=JZdtTvDCPIe4iAe72sTABA.1315804977740.3&emsg=NCSR&noj=1&ei=MpdtTpa4OKKSiQfBpcjGBA

Sep 12, 2011 | Philips Magnavox 51MP392H Rear Projection...

2 Answers

50H13 Red Convergence Problem


Yes, it could be from the convergence amp having a loose connection. Big Screen tv's have problems with loose connection especially when moved or bumped. If you can take back off and find convergence amps then safely tap on ic's and see if it changes picture then it's maybe just aloose conn. If no change then you need to check resistors inline to red. At the most replace IC's these are the large STK's by a heatsink. Hope this helps!

Sep 07, 2007 | Toshiba 50H13 50" Rear Projection...

1 Answer

JVC AV-48WP30 convergence drifting after IC replacement


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

Mar 16, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Focus issue after replacing convergence IC's


pull the fron grill off the set then remove the cardboard covering the hole that is in the front of the set you will find a square box that has 6 controls on it adjust the focus for the red, blue and green crts, do not adjust the three marked screen control.

Sep 10, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Convergence adjustment that wont work


Most of these sets use two convergence IC's; the most common one in your set is STK-392-040(you will see if you look inside the set) Buying a board is usually more expensive then just replacing the two IC's---about the only other parts around them that go bad are pico fuses on the convergence board(usually orange in color and the amperage is marked on them, they can be checked like any fuse) On Ebay with the STK number that you find in your set you can buy both IC's for about 16 dollars plus shipping (look for Sewsales---it is Suburban Electronics)

If any color will not adjust you have a bad IC.

I do this here for free so if this has helped give me a vote here.

If you need more direct help or have questions :

etower.766@netzero.net

Aug 18, 2009 | Projection Televisions

1 Answer

There are red, blue and green lines going all the way across


it sounds like a convergence problem; in the customer menu there is an option to adjust it with the Sony remote---if either blue or red will not adjust in some direction---you have a bad IC---this set uses two STK-392-560 IC chips for convergence---both would need to be replaced and the set adjusted again. If this has been helpful give me a vote here---if you need more direct assistance--------- etower.766@netzero.net

The convergence IC chips are available on Ebay from Surburban Electronics for less then 14 dollars for the pair.(plus shipping)

Aug 15, 2009 | Sony KP-57WS500 57" Rear Projection...

2 Answers

I have an RCA HD52w59 with a convergence problem. I've been told different things on this site. First I was told to change FL231, CL230, and DL231. I've also been told to replace both IC's (STK392-110)...


Your set doesnt have STK ICs. If the convergence adjustment option has disappeared from the on screen menu, then replace FL231, DL231 and CL230 If the adjustment option hasnt disappeared from the menu then you need to check the resistors on the convergence power supply board some of those will be open. The actual convergence Board will usually not develope problems just the Convergence power supply if the convergence adjustment option is still in the on screen menu.

Mar 15, 2009 | RCA HD52W59 HDTV Projection Television

2 Answers

Convergence


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 16, 2008 | Projection Televisions

1 Answer

Convergence has to be set daily


http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

convergence amp ic are going replace them before you have more problems

Dec 12, 2007 | Toshiba 43H70 43" Rear Projection...

2 Answers

RCA P46159 Convergence


Why would the set go out of adjustments? I highly doubt if the set needs only alignment. These adjustments are for small drifts only. If anything is way out more then what the on screen can adjust, you have a problem with the convergence correction circuit. There is a convergence power supply in this set that goes bad a lot in these TV sets. There is also a convergence driver board. These RCA sets do not have the integrated IC's like most sets do. Each convergence yoke, horizontal as well as the vertical, has two independent power amp circuits driving them. And that's for all there tubes. So there are 6 separate amps controlling the convergence in these TV sets. You really should call in an RCA authorized repair shop to assist you in this repair. Good Luck

Oct 01, 2007 | Projection Televisions

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