Question about Sony KP-46WT510 46" Rear Projection HDTV

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Skill Level HI there. I am a pretty handy guy, have done some soldering, but not much on modern PCBs. I have a few cheap soldering irons, and a "ColdHeat" soldering iron as well. I need to replace the convergence IC's on my Sony KP-46WT510. Is this a fool-hearty, or dangerous thing to do given my experience? I don't have a service manual. I can get the ICs no problem online. I don't want to mess anything up though. Thoughts? agscheidle at

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Its a fairly easy repair, However be careful where you get the ICs alot of places sell the cheap versions. You can get good quality ICs at the link I am posting I am one of their support techs plus they offer free tech support to help you. You will need to STK392-560 ICs for your model. The ICs arent that hard to solder getting them out is the hardest but if you grab some de-solder wick from radio shack its actauul alot easier. Heres a link where you can get quality ICs if youd like. They also have the service manual for your model if youd like one. They email the service manuals.

Posted on Apr 18, 2008

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I need to replace a cooling fan. Is part available and can handy guy with soldering skill do it? ( I'm considering buying one as is. thanks!

There are hundreds of cooling fans on the market. Without seeing the fan in question, we won't be able to tell. Somebody might be able to help, if you tell us the brand and model information.

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My Hitachi 50UX26B/27K red picture tube seems to be out of line with the blue/green tubes. When I press the magic focus it runs a short 30 second cycle then displays the number 3 in the bottom right hand...

Your convergence is fried go to ebay and order this item number 130475189383 copy n paste and put in ebay search.You will also need a delsolering iron, a soldering iron, some kind of skill soldering and patience.

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1 Answer

Was told power unit had to be replaced how much will that cost?

If you are handy with a soldering iron you can do the repair yourself. 90% of power problems stem from cracked solder joints on power board & convergence board. All you need to do is heat up the existing solder and add a little fresh solder to the joint. I had a power problem on my Toshiba 50". Service guy told me a new board would be $165 + $150 for labor. I wasn't paying that so before trashing it I grabbed my soldering iron and resoldered every joint on the power board and convergence board. Bingo! No more power problem and it only cost me $25 in supplies.

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1 Answer

Tv turns on then turns off

Sounds like you have the very common failure of the high-voltage transformer. It transforms your house voltage into a smaller contrinuity for the system circuits. You can get one at but you will need soldering iron & solder, ohmmeter, voltmeter and if you have never done this before, then a service/repair manual would be handy as well.

Dec 16, 2009 | Mitsubishi WD-52525 52" Rear Projection...

1 Answer

I was told that my convergence ic's need to be replaced along with the 6.8 ohm watt resistors. What doI ask for the ic's and what watt resistors should I ask for. where can I buy these ic's and resistors.

I can help---what level of skill do you have at soldering?

I know these sets pretty well--to begin with confirm actual model number to me---The IC's and resistors can be bought.

The question is are you able to solder etc if I step you thru it?

Whatever chips the set uses you can buy a pair on Ebay for under 15 dollars--the resistors can be purchased at any electronics or TV repair place.

I help people here even AFTER they give me a vote here--idea is for you to get your set fixed and save money.

Tell me exact model and how much skill you have and I will assist you---I do this here for free.

Regards, SD TECH

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1 Answer

Red shadows in 48" JVC rear projection

Well you better be pretty handy with a soldering iron. The convergence output IC's need to be replaced. These are large plastic pack IC's with 18 or so pins that are soldered on the underside of the circuit board. These IC's are mounted to large metal heat sinks.

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Hi. your convergence board is failing. this board regulates the the alignment procedure and , the chip set is damaged. replace the convergence board soon.

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sounds like the convergance ic are bad

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yes, it is likely that it is dry jointed,as Premtech described, a ring like crack about the joint where it solders down to the printed circuit. They are generally pretty obvious. There is generally no flux on modern PCB's If you cannot solder,then this may pose a problem. What are your skills like with an iron in hand? :)

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1 Answer

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with skill and experience. need solder wick or solder sucker(radio shack) screwdriver set, needle nose pliar, solder and solder iron 35 40 watts. desolder the IC all legs on bottom of pc board. pull the ic out with needle nose, install new ic ,u might have to bend and straighten the legs, dont force it. now solder all the legs carefully. GGGGGOOODDDD LUCK!

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