Question about Samsung HCL4715W 47" Rear Projection Television

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Triple vison/WHAT IS AN ic?

My samsung hcl4715w is showing three of everything. One red, one blue, one green. Could anyone please tell me whats wrong and how much it might cost. Thanks what is IC?

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If your colors will not line up on the television screen using the convergence menu, the most likely cause is that the convergence IC’s in the set are damaged and need to be replaced.

IC’s are just many small circuits built into one package, many diodes, transistors, resistors, even regulators and power supply circuits, they can be various shapes and sizes.

There are two and sometimes three very large IC’s that control the convergence in a big screen set. They are fastened to a large heat sink because they generate a good deal of heat. Finding these is not that hard, but there is supporting electronics that will also need to be replaced during the repair. There will be fusible resistors and feedback resistors that may have been damaged at the same time.

If you choose to repair the set yourself, be very careful of the high voltage that can be stored in the capacitors, and CRT’s. This voltage can be as high as 30,000 volts.

Unless you are very handy with a soldering iron and reading color codes on the resistors. I would recommend that you have a local television service center have a look at it and get an estimate for the repair.

I don’t use the cheapest parts when I repair this circuit, because I have seen the cheap IC’s damaged as soon as power is applied. I would also recommend that when the IC’s are replaced, whoever does it, that they use plenty of heat sink compound and remove the old compound first.

I guess you are wondering how much this repair would cost.
Not knowing the labor rate in your area and diagnostic fees, I can only give you a ball park figure. I have done this repair for between $375 and $450

I hope this information allows you to resolve this issue.
If I have helped you, please help me, and rate this suggestion the highest FixYa rating. (Two Thumbs Up) If you cant rate this post with the highest rating, then please comment to this post and I will try to help you further.

Posted on May 29, 2009

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2 Answers

Every thing on the screen is triple


Your symptoms sounds like a damaged convergence IC’s.

There are two and sometimes three very large IC’s that control the convergence in a big screen set. They are secured to a very large aluminum heat sink.

Most of the time you can just correct the convergence through the television menu. All that needs to be done is line up the blue and red to the green. If the colors do not move then there may be faulty components in the convergence circuit.

You may want to consult a Television Repair Technician, I would estimate the repair at around $350.00 - $400.00, depending on the repair rates in your area.

I hope this information allows you to resolve this issue.
If I have helped you, please help me, and rate this suggestion the highest FixYa rating. (Two Thumbs Up) If you cant rate this post with the highest rating, then please comment to this post and I will try to help you further.

Jul 01, 2009 | RCA P52926 52" Rear Projection Television

1 Answer

Convergence problem


The convergence board is bad in this set. Samsung no longer has this board in stock. You will have to take the board out and rebuild it by replacing both of the STK convergence amp IC's These IC's are soldered to the printed circuit board. They will be standing up against a metal plate, called a heat sink. They are black in color and are about 2" by 3" . They have white lettering on them that start with STK and the some numbers. You get those numbers and go to mcmelectronics.com, enter the exact number of the IC and order two of them. Before you install the new IC's you will need to apply some heat sink compound onm the back of the new IC's. This heat sink compound is avaialable thruogh radio shack. Good Luck

Aug 23, 2007 | Samsung HCL4715W 47" Rear Projection...

1 Answer

Samsung three colors on screen, out of focus #hcl4715w


It is a convergence problem. The IC's (integrated circuits) or STK chips or the "guns". You have a red,and blue, IC's that provide all the colors. When the colors are out of convergence, you get ghosting or what looks like 3D pictures. I haven't been able to locate the part numbers for the IC's or STK chips but have located a convergence board. No luck determining if IC's are included (a phone call first to verify) but if they are, would make life much easier for you to install. Part # is BP95-00415H http://jr.partsearch.com/Part/Samsung/Samsung/BP9500415H/New.aspx?ModelMfgName=Samsung&ModelBrandName=Samsung&ModelNumber=HCL4715W

Typically, IC's cost around $10 or less. here is a link to a guy who provides pretty good instructions on replacing the IC's along with pictures.

http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Hope this answers your questions. Best of luck.
Greg

May 31, 2009 | Samsung HCL4715W 47" Rear Projection...

1 Answer

Triple vison


This is a convergence problem that can be as simple as poor solder connections on the pins of the convergence ICs or defective ICs. If you can solder, you may be able to fix this yourself. If you wish to attempt the repair, update this and I'll provide additional details and instructions.

Dan

Feb 09, 2009 | Samsung HCL4715W 47" Rear Projection...

1 Answer

Triple image


You have convergence problems replace both of the STKs big black ics.

Dec 09, 2008 | Samsung HCL4715W 47" Rear Projection...

2 Answers

Blurred vison


Yes your model uses two convergence ICs they are STK392-010 alot of people say change only one but thats wrong as one IC controls red and half the green circuits, and the second one controls blue and the remaining green. so if one IC goes it places a strain on the other one because of the green. So change both and you will avoid having to do it all over again in a few weeks. Heres a link where you can get new replacement ICs and they provide free instalation instruction as well as free on line instant messageing when youre ready to do the actual repair which takes about an hour from start to finish. heres the link.
http://servicemanuals.vstore.ca/

Apr 29, 2008 | Samsung HC-P4752W 47" Rear Projection...

3 Answers

Samsung rear projection sp42w5hfx convergence problem


Compare IC connections with meter = check solder joints to
see if some are touching one another. Tell me exactly what
brand & part number was installed...........T.
PS. The red,green,blue plugs may be mixed up because the green should stay and red & blue move !

Nov 03, 2007 | JVC AV-48WP74 48" Rear Projection...

1 Answer

HCL4715W Rear projection CRT problem


your screen and focus controls need adjustment to acheive a good grey scale picture the adjustment are not on the crt neck boards.(focus block)

Aug 29, 2007 | Samsung HCL4715W 47" Rear Projection...

1 Answer

Convergence


Replace both convergence IC's part# STK392-040. Also check for burnt/discolored resistors nearby.

Aug 23, 2007 | Samsung HCL4715W 47" Rear Projection...

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