Question about Sony KP-46WT500 46" Rear Projection HDTV-Ready Television

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Red, Green, and blue

First I replace the ICS t.v. still showed red, blue, green. Took it back apart found the upper 5amp fuse on the G board bad replace it. Put the t.v. back together, Still didn't work. Took it back apart to find the same 5 amp fuse blown also, a 3.15 amp fuse is blown. My next step is thowning the t.v. in the trash cause i'm not payin $400 to get it fix. Can someone please help me!

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  • lilrere Feb 05, 2008

    so so when i ohm the ics pins i should not get any continuity between them

  • lilrere Feb 06, 2008

    The part number for the IC's is STK392-560 same as the original ones.

  • Anonymous Feb 29, 2008

    Sony KP-46WT500 46"rear proj. has an hourglass effect happenning at top and bottom. Green lines in pic that show more so in darker scenes and a blurry effect or ghosting, in red,blue and green.

  • Vista Electronics May 11, 2010

    Do a pin-by-pin comparison of one IC to the other...they should

    check very close to the same on your ohmmeter......

    What do you read?..............T.

  • Vista Electronics May 11, 2010

    What part # and quality IC's did you use ?...........T.


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I have also replace % amp fuse on g board my tv works for day and then fuse again, It happen two time any Suggestion.

Posted on Feb 28, 2008

  • Roony231 Feb 28, 2008

    I mean after i have replace 5 Amp fuse on G board and both ic on D board my tv works perfect for one day and then 5 amp fuse blow again it happen two times how do i solve this problem.


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Those fuses usally blow when the ics are shorted. Are you sure that you were careful soldering them in and did not have any bridges? Also you make look for some resistors that have changed value on you after all of this.

Posted on Feb 05, 2008

  • Joshua Dobbins Feb 05, 2008

    Well that all depends to because some of the pins are ground so those would have it. You just need to look at them and see if you can see anything where you could have bridged the solder connections. Check PS 8001 and 8002 make sure they are not open hopefully this gets you closer.


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Sell it on ebay as broke they go for 100 just a idea look like u tryed alot

Posted on Feb 05, 2008

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1 Answer

Pioneer 65" TV Model # SD-643HD5 won't power up.

I would suggest replacing the board itself, chances are what caused those fuses to blow is still faulty. did you check those fuses again after you powered it back up?

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Feb 29, 2008 | Sony KP-51WS500 51" Rear Projection...

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The tv shows only red and blue it projects three

You need to replace Both STK ICs . They are Big Black ICs and will have PN# on them
example STK392-110
Mats has ICs 1-800-628-1118
Also check the Pico Fuse in Front and back Of ICs they look like resistors ,But will be Green or Yellow 5amp, 6amp, 7amp.

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I have suddenly have a yellow and blue lines outlineing the charactors on screen. Also ghostlike shadowns,

Replace the Convergence ICs there is 2 of them Big black ICs they will have part number on them example STK392-110 .Also Check Pico Fuses in Front and back of ICs they look like resistors but are Green or Yellow 5amp, 6amp, or 7amp Fuses.
Mats Electronics has STK ICs 1-800-628-1118

Jan 11, 2011 | Sony KP-46WT510 46" Rear Projection HDTV

2 Answers

My screen is green and red, kinda like a 3d showing

The problem with the unit is convergence.Remove convergence output board then replace IC2701 and IC2702 both of them are STK-392-120,After replacing ics you have to go into the menu of unit to adjust convergence.Align the red ontop the green then blue ontop the green.

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Started see red and green in the tv picture and a funny looking line in upper left corner. words on screen are shaddowed with red and green

Replace both of your STK convergence ICs will have part number on them also ck pico fuses around ICs they will look green or yellow like resistors, but are Fuses.STK392-110 example.

Sep 16, 2009 | Sony KP-57WS500 57" Rear Projection...

1 Answer

How do i center the colors, red, blue and green?

Replace Both of your convergence ICs STKs, big black ICs.
STK392-560, also CK pico fuses around ics you may have 1or2 bad .


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1 Answer

Cant tune red bulb

Check pico fuses F9A04 and F9A05 if either one of those picos are open it means the convergence Ics are bad along with the picos. Your set uses two STK392-570 ICs and the two picos are both 5amp picos. You can get replacement parts and installation instructions at the following link.
The pico fuses are located on the second board from the right heres a pic of where they are.b86c4db.jpg

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1 Answer

Convergence ICs

the green is half controlled by half of each of the convergence Ics meaning green horizontal is controled along with the red and green vertcal is controlled along with the blue Ics. So if you have replaced both Convergencs ICs the problem is most likely a resistor that is in the green circuit. You will need a schematic to locate which resistors are in the green vertical and horizontal convergence circuit

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Distorted image and color

sounds like the convergence ICs have failed. Will the red and blue move in all 4 directions when you try to adjust the convergence? If not the convergence ICs are bad replace both of them also check the resistors that power the ICs as they may be open as well.

Mar 12, 2008 | Sony KP-57WS510 57" Rear Projection HDTV

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