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

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Vertical black line

4363 projection tv samsung had convergence problem replaced 2 stk ics and 4 resistors and had a black faded line in center of screen and machine back to normal but still have line everything seems clean thanx

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Re: vertical black line

Does this verticl line go all the way form top to bottom or is it about 5-7 in long in the center of the screen and does it some times change in color with the picture.

Posted on Aug 18, 2007

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Do not have full 64 point convergence control on the green crt. Most all ofrt of the picture is in convergence but the top first two lines are bowed and the middle bottom line is arced in the center....

No,the tv convergence board the 2 STK convergence ICS and some or all of it resistors are dead.Tv convergence board must be replace the 2 STK convergence ICS and also must test all of the resistors and replaces all those dead resistors too.

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The blue and green are fading into one color

The problems ur tv having is call convergence problems,it dead.Tv have mis colors lines R,B,G any parts of the picture,have colors shadows or 3D pictures look alike?The tv convergence board have dead parts 2 STK convergence ICS and some or all of it resistors too.These parts must be replaced on the Tv convergence board to fix it to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Dec 31, 2010 | Samsung HC-R4355W 43 in. HDTV Television

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I have samsung hcn473 tv. The screeen is covered with squiggly vertical lines. Even watching a dvd movie, its the same.

The tv have a problems known as a convergence problems,it dead.The tv colors lines R,G,B mis alignment,have colors shadows or look like 3D pictures.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board is dead,must be replaced to solved the tv picture convergence problems.The shop,will cost u $300-350 for parts and labors.

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3 Answers

Double photo

Replace both of your STK ICs STK392-110s use 150s Mats has Them 1-800-628-1118

Jun 02, 2010 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Vertical line on convergence will not move left

Ur convergence are dead.Must know how to solders?Must repalced 2 STK convergence ICS,and some or all it resistors.Go to websites to buy.Tries Tv repair, to buy a convergence kit to repair it ur self.The shop will cost u $300 for parts and labors.

Mar 24, 2010 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Convergence crosshait will not line up--samsung PCL5415R --red outline the picture

Replace Both STK ICs big black ICs example STK392-110 also 2 resistors 2.7ohms in same circuit call mats forparts 1-800-628-1118

Dec 14, 2009 | Samsung PCL541R 54" Rear Projection...

1 Answer

43fdx15b Hitachi 42in red vertical lines magic focus inop for red

This is a convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors.Shops usually charge from $200-$300

Sep 26, 2009 | Hitachi Projection Televisions

1 Answer

JVC Television

1024x768 Normal 0 Convergence

When A REAR PROJECTION TV has coloured outlines or a 3D image the Convergence Circuits most likely need attention.

Replacing the output amplifiers (located within the Convergence IC's) allows the pictures to line up correctly, and no more color outlines.

This is the most common fault in all makes of rear projection TVs.

Some models of TV require major disassembly and considerable shop/manufacturer's support to repair because of their design that causes other power supply or vertical deflection problems. The poorly designed products require a "bench" repair that can typically cost from $350 t0 $700.

Some TVs are designed for on-site repair and have more reliable circuit design that does not usually cause damage to other parts of the TV when convergence chips fail. The ones that usually allow reliable on-site repair are JVC, Samsung and Hitachi.

It is normal to have some resistors in the circuit burn up or increase in value from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced with the right value or the chip may fail again.

This is not a simple repair like changing batteries or a fuse. Reading through the other posts shows many that try and end up with bigger problems.

Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with other "new and improved" IC's, like STK 392-150. These are devices with different characteristics and require different value resistors in the circuit. Replacing with the STK 392-150 will cause overheating of the resistors and a damaged IC.

If you are in Calgary, I can help. If not, get someone that has experience working on your JVC. My website is below with some costs and explanation.

Good Luck,


Jun 05, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Ok, so I Replaced stk-392-110 (2) and......

Check the resistors in the red convergence circuit right next to the Ics you will need to lift one side of the resistor out of circuit to acurately check them but usually one or two resistors will be opened when the ICs go out

May 17, 2008 | Panasonic PT-53TW53 53" Rear Projection...

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