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

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Samsung hcp-4752w How do I manualy adjust the self focus on the tv?

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  • brianl013 Dec 16, 2008

    I have a Samsung HC-P4752W TV with a focus problem and tried pressing the suggested code and nothing happened. Is the sequence suppose to put the TV in Service mode? I held down the mute while pressing 1-8-3. Am I doing something wrong or am I missunderstanding what is suppose to happen THANKS.

  • newboot Jan 12, 2009

    I have the same television and I replaced the two large IC and tried to adjust the convergance.  I was able to move the red but not the blue or green.  What did I do wrong?  I did not check this before I replaced the chips.

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With power on, press Mute-1-8-3. That will get you into convergence mode. 1 sets factory default convergence. Avoid pressing 2 - it resets everything. 3 restores the last saved settings, 4 switches among fine adjust, line adjust and grid move. 7,8,9 - select R,G,B. The three keys below those turn RBG on/off.

Self-focus to save the settings. S-Mode to exit.

It can be a REAL headache, but take your time, and you'll get it done.

As an after thought....if you have a need to manually adjust the convergence, you probably have something wrong - unless you've just replaced parts and are doing the initial convergence.

Posted on Dec 02, 2008

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Focus on samsung rear projection tv


Adjust focus is really a skilled work indeed. If you wish to get more details, check this site. Pull up older posts there. Check the site with patience, as it has over 2250 posts now. All are related to electronic equipment repair help.

Apr 11, 2013 | Samsung HLN5065W 50" Rear Projection...

2 Answers

Bought a convergence repair kit for my Samsung HCP-4752W DLP...ICs are replaced and I'm ready to refit the board back in the unit...the kit came with two 3 amp pico fuses...I can not see any similar...


Pico Fuses are either Green or Yellow ,they are in many different circuits near STKs,and Startup Power Supply boards.
Encompass Parts Distribution sells Parts and Boards for this Model.
Most of the time their is 2 resistors that need to be replaced 3.9ohms located in front of ICs.
First just replace the ICs ,you might not need to do anything else.

Jan 22, 2011 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

How do I get the front panel off my Sony 46in projection tv to adjust the red line conversion.


You cannot - or should not adjust the convergence manualy. The TV has a built in flash focus button on the front panel that you can press. Some sets also have a convergence menu. Use those. Adjusting the knobs in the TV will only make things worse.

Nov 12, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

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Samsung Rear Projection TV - SP43H3HT


There is a problem with the self focus function on the TV set.  We have had ours replaced twice. Once under warranty and once out of pocket.  After you get it fixed, if you do, the self focus option needs to be set to "OFF" and only focus the TV when necessary.  Ours is going out again unfortunately. You would think paying what we all did for this paticular TV  we would or received a higher quality project.  However, Samsung only hymns and haws about it and offern absolutely no help other than TV repair people in our area that they know about. (which seem to charge absolute top price).

We tried to get the screen replaced while under warranty and were unable to Samsung wouldnt cover it.  Now we cant even locate the top layer screen and pay for it ourselves.

I dont think I will ever purchase a Samsung TV again.  Never again.

Apr 26, 2008 | Projection Televisions

1 Answer

Bad ghosting of all colours


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,Pioneer2_bing.gif 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.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jan 09, 2008 | Samsung PCL545R 54" Rear Projection...

1 Answer

Samsung rear projection tv has multiple images with differnet colors


The auto self focus screws up if the picture does not remain constant or close to it while focusing. It is designed to self focus every fifteen minutes. Go to menu and then setup and turn the auto focus feature off. I have had mine off for the past year and have had no problems. If you slide the bottom portion of the remote down you will see a self focus button. My suggestion is to put a DVD in and hit the pause button during a scene and then hit the self focus button. It should align back up and may take a couple of tries. (If you have an aftermarket remote, just enter the menu and then setup and you can activate the self focus feature, just don't turn it to auto focus!)

Dec 31, 2007 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Blue problem


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

Nov 25, 2007 | Samsung HCM5525W 55" Rear Projection...

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