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

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Sam Sung Rear Projection HC-P4752W

Today I replaced the IC's, the blue is now straight when it was bowed before. The other two colors are bowing on the top and bottom. Do you think one of the IC's is bad? If so, which of the two IC's control the red and green? Is it the IC that runs front to back or side to side? If you look at the t.v. screen, it's almost like looking through a bubble. The image looks like it is being pushed twoards the back of the t.v. The same as looking through a bubble. Thanks in advance!

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I would quess that its most likely a resistor that opened when the origional IC went out. I dont have the specifics on your set. But rule of thumb is to run the set for a minute then shut it off and the affected IC will be much hotter than the one thats not having difficulty. I will try and locate a service manual for your model and look it up for you. I will repost if I find out which IC controls RED.

Posted on Mar 21, 2008

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1 Answer

Blue color is off and bowed at bottom


Needs the 2 convergence amplifiers replaced and then convergence alignment carried out(Could be pricy)

Dec 04, 2009 | Toshiba 50H81 50" Rear Projection...

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Hour glass bowing on the top and bottom of my HCP4752W Samsung


Check the resistors near the ic, and the fuses to the ic's, i bet you will find an open fuse. the fuse will look similar to a resistor without color bands. use a dvm and set it on ohms, with the tv turned off.

Sep 02, 2009 | Samsung HC-P4752W 47" Rear Projection...

2 Answers

RED CONVERGENCE SCREEN PATTERN BOWING AND CAN'T ADJUST


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,Pioneer 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.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jun 13, 2009 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Convergence problem Mitsubishi 6043


DOES IT AUTOMATIC CONVERGENCE,,TRY THAT,,IN THE MENU,,TRY NEW JACKS

Mar 27, 2009 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

TV problem


It sounds like there is a fault on the chroma panel of some kind.

Jul 23, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Samsung HC-P4752W 47 in. Rear Projection bigscreen TV


You dont have to remove the aluminum heat sink. The ICs are attached with screws and then just unsolder the ICs from the circuit board and then replace the new ics into the pin hole locations after applying heat sink compound onto the back then screww the new ICs to the heat sinks then solder the pins. Very easy repair.

Jun 19, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Samsung hc-p4752w


Sounds like convergence amp ic's
i dont have any part number for that model.
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 14, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Samsung hc-p4752w


Not sure of the part number most use STK392-110 or 120s . You will need to look at the ics in your set they will have the IC numbers stamped on them they will have STKxxx-xxx whatever that number is thats the sanyo part number for those ICs

Mar 14, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Covergence and Bowed Picture Problem


can you adjust any color of convergence in user menu blue, or red up or down left or right. if you can make any up or down left or right adjustments on any color then the likelihood it wont be a convergence ic. it would be a output resistor. so see if you can get any movement. with it being bowed i was suspect an convergence ic.

Jan 08, 2008 | RCA P60920BL 60" Rear Projection...

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