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

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Blurred vison My samsung tv is blurred all the sudden. I read some blogs and people were saying that i could fix it myself with the right parts. just wanted to know what the right parts were. I saw that you told someone that they needed two convergence amps but the other blogs said i only needed one.

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Also check the small green fusible resistors by the chips. There are several sets and they are 3.9 ohms. They are in parallel and will read around 2-2.1 ohm when measured on board. I replaced my chips and the blue would still not align, it turned out two of the fusible resistors were bad as well. I replaced them and the tv works like new.

Posted on May 02, 2008

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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/

Posted on Apr 29, 2008

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1 Answer

Blurred picture


do you have sound? if you have sound but not picture you have to buy the tv inverter.check at www.partstore.com they can give you the right part

Aug 07, 2012 | Samsung LN52C530 52 in LCD TV

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It has blurred vision and color is`nt quite right. had a different tv do the same thing. it took a certain part. the guy charged me 250.00 to fix it. i think i can fix this myself if i knew the part number...


Hello,

This problem is very common with rear projection TV's.

It is related to one or more of the colour guns being out of alignment or needing to be replaced. The only way to correct this issue is to have a technician come in and fix it or bring it into a repair center. I personally would suggest purchasing a new TV. The cost of getting them aligned is usually more then a basic LCD.

Hope this helps

Dustin

Feb 12, 2011 | Hitachi 50DX01B 50" Rear Projection...

2 Answers

Kp-57ws500 sony projection tv convergence problem


Sony convergence problems
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/

http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/
look for the board that has heavy heat sinks on them the ic will be stk392-XXX
no experience in soldering i would send the board into ptscorp.com and have them repair it.

Jan 22, 2008 | Sony KP-41T65 41" Rear Projection...

1 Answer

RED AND GREEN DOUBLE AND BLUR PICTURE HELP PLEASE


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

Jan 11, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Samsung Rear Projection HD tv IC convergence green only messed up now. Help please


To check the pico fuses you're merely testing for continuity. If you get an infinate reading you're in good shape - if it doesn't budge the meter the fuse is open... That's a really easy set to work on for convergence problems - the convergence board is easily removed..
Another cause for mis-alignment like that are the youke return resistors... There are several out front of the convergence amps that may have changed in value. They are 3.9 ohm - 2w resistors and will look identical to Rz123 and Rz124 (same banding). For those simply select a low ohm setting on the meter and check to see if any of them have some way low or way high reading...
Need anything else just ask...
Bill

Dec 09, 2007 | Samsung HCM4216W 42" Rear Projection...

1 Answer

Bluring at the top section of the TV


http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

Nov 11, 2007 | JVC AV-56WP30 56" Rear Projection...

1 Answer

Hitachi 43FDX15B color convergence problem


http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

Nov 10, 2007 | Samsung HC-P4363W 43 in. TV/DVD Combo

1 Answer

Samsung HC-P4752W Blurred


im sorry for this not being a solution, but I have the exact same issue Jose. It just happened 3 days ago. When I run auto focus it says check factory default settings. Will replacing the 2 CI's help cure this problem.

Jul 28, 2007 | Samsung HC-P4752W 47" Rear Projection...

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