Question about Samsung HCL4715W 47" Rear Projection Television

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Samsung HCN4727W I have a convergence problem. I tried the auto focus and it does not help. what can I do

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Re: Samsung HCN4727W

Replace convergence amp IC's = tech skill required.
Then activate auto focus...............T.

Let me know if you want step-by-step help....................

Posted on Nov 18, 2007

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Red will not focus but blue will ...perfect focus stops in middle


Mar 15, 2009 | Samsung HCN4727W 47" Rear Projection...

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Samsung model HCN4727W rear projection is having convergance problems. When the perfect focus button is pushed, it can not auto complete. When I try to focus the colors manually, it is not able to...

    There must be two IC STK'S which need to be replaced.The part number would be as 
You can see it by yourself and the price could be checked at
Thanks for using fixya.

Dec 14, 2008 | Projection Televisions

1 Answer

Auto focus problem

The auto focus is not actually focusing the tv. When it is running it is adjusting the convergence. Most likely the repairman that replaced your tuner didn't plug the sensor wires back in. I would call him back out and have him hook it back up.

There should be a convergence menu in the tv. Use the samsung remote and go into the menu and look for convergence.

Sep 11, 2008 | Samsung HCM553W 55" Rear Projection...

1 Answer

HCN4727W Convergence issue

Repalce STKs with 392-040 resistors should be 3.9 ohms,also you might want to join Repairworld it is for members who have TV shops over 7,000 different shops / lots of good techs there.They will not put up with anyone just looking to repair there own tv .Sorry unable to help with cz140,141.will do some checking you also can order whole convergence board.

Sep 08, 2008 | Samsung HCN4727W 47" Rear Projection...

3 Answers


you need to have both convergence ics replaced STK392-040 (2).resistors 3.9 ohms they will be open.

Jul 27, 2008 | Samsung HCN4727W 47" Rear Projection...

1 Answer

Blowing Convergence Amp Boards

either the DCU Digital convergence Unit or the velocity board are most likely the fault.

Jul 10, 2008 | Samsung HCN4727W 47" Rear Projection...

1 Answer

Samsung model HCN4727W

I had the same problem with mine until I figured out it was from the auto self focus. Normally it should be done with a picture that remains constant or close to it, or else the focus gets screwed up. Go to menu and setup, then turn the self focus off. If you look on the remote and slide the lower portion down you will see a self focus button. My suggestion is to put a DVD in and hit the pause button and then press the self focus button and wait until its finished.

Jan 21, 2008 | Samsung HC-P4752W 47" Rear Projection...

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