Question about Sony KP-51WS500 51" Rear Projection Television

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Picture blurred The picture blurred one day suddenly. Pressed Flash Focus buttob and still no improvement. Wonder if I should replaced the Pico Fuses?

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  • kevinwu Dec 30, 2007

    CTR1800, I appreciate your reply to my problem. I do get a picture. It seems the red and green are out of alignment. Wonder if you can tell me which board is the convergence IC board? I contacted Sony Tech Support and did not get any help on this. Thanks a lot.

  • Moto410 Jan 04, 2008

    I am having a problem like this. The red and green seem to out of line a bit, and fine print is hard to read. I could really use some help, thanks Josh F.



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Do you have a picture?
Sounds like a defective convergence IC

Posted on Dec 20, 2007

  • Cary Farah
    Cary Farah Dec 31, 2007

    you should look for IC with the numbers like stk392-???
    most common is stk392-110 replace both ic they will be attached to
    two big heak sinks might be board G, also check the 1watt resisters close by they are small resistance like 3.9 ohms should be 6 of them.



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1 Answer

Replaced Convergence chips, same problem

This set has pico fuses on convergence board and also on G power board, there should be 2 5 amp pico fuses on power board.

If convergence is bad exactly as before double check the power board fuses and check to see if voltage (it is marked!) is there with power board disconnected from chassis..


Mar 01, 2012 | Sony KP-61HS30 TV

1 Answer

Our TV model is KLV S Series. for few days the pictures were blurred. then suddenly it was all right. now again it is blurred, pictures are like ghost/negative.two three times my son has throne the remote...

Your television have problem in focus appearance.The picture have out of focus that why the picture is blurred.The problem is in the CRT socket of you TV it is connected to the tube,the white crt socket with 9 terminal.So you need to replace the CRT socket o make the picture good.It can be replace by using soldering iron and soldering pump.So you better call a authorized repair technician to do the repair.

Jul 09, 2011 | Sony Televison & Video

1 Answer

My sony hdtv the picture is like a3d effect with red tint flash focus will not work the crosses wont line up any solution or is tv shot?

Replace your Convergence ICs they are Big Black ICs and will have part number on them,
STK392-110. You also need to check the pico fuses in front and back of ICs they will look like resistors Green or Yellow but are fuses 5amps-7amp pico fuses.
Mats Electronics has ICs 1-800-628-1118

Jul 04, 2011 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

My rear projection tv 51MP392H/17 has a blurred red shadow that makes it look kind of like watching a 3d movie without the glasses. for a while we could turn it off and back on and it would reset the...

Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. It still can be repaired.
Using your original remote go-to the settings menu then goto the convergence section. Try to adjust the red and then the blue convergence. You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight. If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem. Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix Reply

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. If you have never done this before we would advise calling a technician or if you want to do it yourself get a complete kit with instructions and support from Their kits include a step by step instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.Thanks! hope you rate my response

Feb 02, 2011 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Red and blue color on TV is aligned but blurred, green is ok

U have a CRT Tube coolant problems.Tries Websites,Tv reapair to buy CRT tube coolant to recharge ur CRT.

Feb 26, 2010 | Sony KP-46WT500 46" Rear Projection...

1 Answer

I suddenly have color separation (blue, yellow,white). Flash focus won't work. Any suggestions.

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 between $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail

Note: there are also pico fuses (on the same convergence board) that need to be checked/replaced

Oct 20, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

I was watching my HCL4715W TV and the picture

It sounds like one of the convergence Ic chips is bad---you will need to locate and replace both of them and look for any damaged parts around them; there usually are two pico fuses in this area, one for each IC. The fuses do not look like glass fuses--they usually are green or orange in color and will have the amperage marked on them and on the top of the circuit board.

Aug 09, 2009 | Samsung HCL4715W 47" Rear Projection...

1 Answer

Double and triple picture

replace the two STK392-560 convergence ICs they are located on the two large aluminum haet sinks on the DBoard also check the yellow pico fuses near the ICs

Jun 24, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Red's are out of alignment and I can't fix them

Replace the convergence ICs and the pico fuses you can get a convergence repair kit at the following link which is for the KP46WT510 But its the same one for your model. The kit contains the two convergence Ics all six pico fuses and four resistors. Plus free step by step instructions with pictures that show how to do the repair. Heres the link to the kit.

Jan 24, 2009 | Sony KP-51WS510 51" Rear Projection...

1 Answer

I have a 53 in. sony projection tv,. bowed picture tubes?!?

Replace Both STK convergence ICs will have part number on them STK392-560 use same part number on your STKs. Also around ICs ck pico fuses 5/6amps they are green or yellow.

Jan 07, 2009 | RCA P56930BL 56" Rear Projection...

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