Question about RCA D52W19 52" Rear Projection Television

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3d image/sinking effect

We were watching t.v. and picture had a 3d like effect but started sinking into middle,almost like bowtie shape...top and bottom cut off... can i fix myself? ,if so whats the prob? how much would a repair man charge?

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This is a convergence problem. Ther are either bad connections at the convergence ICs or the ICs are defective. If you can solder, you can repair this yourself. Try resoldering the pins on the ICs first. If that fails to resolve the problem, replace the ICs. These ICs are large, black and attached to a heat sink. They should be marked STKxxx. Figure on $20 for each one. There will be 2 of them.
Keep us posted.
Dan

Posted on Jun 02, 2008

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1 Answer

Rear Projection - Color convergence/bowtie effect


Hi


Thanks for using FixYa. From what you have described it seems that you have to replace the convergence IC and also check the power resistor, if values are not exact you have to replace them. These ICs are located behind the black heat sink; you can see once you open the back off the TV. Also, the convergence board should be checked for cracked solder joints and please make sure to check the resistors as if they are shot the ICs might blow again. All this is only recommended if you have electrical expertise and know how to solder/re-solder components, if not then you should get this done by a professional. The typical cost to get this fixed by a pro is around $250-$300. Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks
Rylee

Apr 04, 2010 | RCA HD56W66 56" HDTV

2 Answers

I have a bowtie on the scrren. what can i do?


Replace STK730-010 it will be located above bottom chassis on small board, will have Part number on it.
Mats has them for $5.95 1-800-628-1118 let me know if you need anymore help.

Mar 24, 2010 | RCA P52926 52" Rear Projection Television

1 Answer

DOUBLE IMAGE ON SCREEN. tOP OF PICTURE LOOK LIKE A


That symptoms are due to failure of convergence out ICs in your TV that will be replaced to get correct converge picture on front screen.

There are 2 big black IC mounted on big aluminum heat sink and number would be written on as STKxxx, these 2 ICs will be replaced.

If you want to repair TV by yourself then confirm model number of TV to provide you more info or call local tech to replace said ICs.
Thanks.

Dec 21, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Poss. convergence problem with Hitachi 53UDX10B Ultravision


You have convergence problem. Either bad connections on ics, ics are bad or voltages to convergence circuit are missing. There are no bulbs in this set. 3 picture tubes,red,green and blue produce a picture than when alighned(converged) correctly on top of each other gives you a color picture.When not you get the effect you are describing. Frst you can try the magic focus in the menu.

Apr 20, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Text/images overlap each other in 3 colors, 3D distorted picture


Here are some of the most common symptoms and example photos of a convergence problem

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.


2c07611.pngSolution


You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

Jan 28, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Picture problem with rca 52 inch hdtv colors split not in focus


Hello, If your picture looks like a "3D image" you need convergence IC's . Red and or blue picture is not converging on top of the green picture. They are mounted on large, finned heat sinks. The # on the IC's starts with "STK-" followed by numbers.They are available through tritronicsinc.com for $15 to $35 each. Good luck.
barneyluc

Oct 10, 2008 | Projection Televisions

1 Answer

3D image


you have to replace all 3 ic's and 2 are stk 392-110 and the 3rd one is stk 392-150 they are located on the extreme right of your tv on a long heat sink all 3 are located there.You can get replacements as well as free tech online support at
http://servicemanuals.vstore.ca/

Apr 10, 2008 | Hitachi 51UWX20B 51" Rear Projection...

1 Answer

I have a 42 AKAI " Rear projection HDTV. As I was watching it, it suddenly went similar to a 3d picture, with a doube immage. It is also a little bowed in the centre of the picture now, and appeared...


You have a problem with the STK convergence modules. They're on the center circuit board attached to an aluminum heat sink that's about 8" long and 6" tall. You may be able to recreate the problem (hour glass effect) by gently moving the heat sink (which the modules are connected to). This gives the hour glass effect on the picture and the advanced convergence screen. This is an indication that the modules pins aren't solidly connected (meaning soldered) properly. Remove the circuit board and clean the old solder off & resolder the modules pins to the circuit board reconnected the board and then retest by again pushing on the heat sink. The "factory" job was good enough for 3-4 years but the heat (and these modules do create a lot of heat) and stress created from repeated use eventually takes it's toll, weakens the pin connections and our problem occurs. take the appropriate cautions working around the high voltage of the set & use a non-conducting piece of wood to push the heat sink when doing tests.
If soldering doesn't help, then the modules have died and need replacing. Don't buy the $10 cheap ones. Most of them have an upgraded version that is stronger. Also look for any burned resistors in the vicinity of the modules.
Best of luck, hope ya fix it.

Mar 05, 2008 | Projection Televisions

5 Answers

Distorted picture and multi-color words


ive got the same problem on mine ita a 2001 model and also mine when you turn it on it goes off by itself and wont stay on.also mine has multiple pictures one green and one red almost as if 3d im not sure what it cost to fix it but tvs have come down so much i might just buy a new one. good luck with yours

Aug 12, 2007 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Apex gb4308 multi colored horizontal bow in middle or screen.


This is not an "STK" problem. Your problem is VERTICAL. You need to check your vertical chip for damage CN301 and check around it for any bad parts or loose connections. I've seen loose connections on the chip itself cause it to self-destruct.

Apr 11, 2007 | Apex Digital GB4308 43" Rear Projection...

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