Question about Pioneer SD-533HD5 53" Rear Projection HDTV

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Stk divergent chips

just wondering what is stk divergent chips?
coz i have same problem,the tv is always blown the fuse after i replace it.
so can you explain it more if you can with the pics.
thank you

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  • Anonymous Mar 28, 2014

    I read your suggestion regarding my mini hifi component i have some question what do you mean by relay is not functioning is there anything i could do about this like reseting or something and what is stk chip should be working pls explain this pls help me and thank you for your prompt response



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That series usually used the STK 392-110.

It has been upgraded to the STK 392-180. 2 of them.

Mr Bob

Posted on May 12, 2008

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I was having the same problem with blowing fuses. I would not have known what the problem was if I hadn't found the solution on this site. It was good to get it running again, but a pain to keep replacing the fuse. If I left the TV turned on all the time it didn't blow fuses. I would just shut off the cable box and screen would go blank, but it was still using electricity, 24 hours a day. Not a good plan.
After reading the advise on this forum I ordered two new Sanyo STK 392-180 chips from here, $32 plus $5 shipping. You can find them cheaper but the pros on this site say they are likely rejects and will only cause you more headache.
I then installed them myself. Followed the excellent instructions with pictures posted here.

I only completed it a few hours ago, and picture looks great, we'll see if the fuse problem returns.

Posted on May 18, 2008


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Related Questions:

1 Answer

Tv is showing double images, not lining up

Your Convergence ICs have failed. Replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu.

Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option to align the red and blue colors

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.

Note if one STK chip fails, you replace both regardless.

Feb 20, 2011 | Mitsubishi WS-65809 65" Rear Projection...

2 Answers

I need to replace the divergence chips on my 60PP9202 projection TV. What are the stock numbers for the chips? Are the STK392-110?

With the back off look from the back to the far left side: two metal heat sinks side by side with fins---chips are bolted to them and will have either STK-392-120 OR -110 ON THEM. There are a few versions where it is one large heat sink on far right side as view from back.

Best place to get the chips: On EBAY select advanced search, then search by seller: sewsales55 is the one I buy from---a pair of the chips will cost less than 14 dollars.

Let me know if you have questions, I am here to help.

If this told you something you did not know rate this solution as very helpful as I do this here for free.


Aug 21, 2010 | Philips 60PP9202 60" Rear Projection...

2 Answers

I have a Samsung Model PCN5425R Rear Projection TV. When I try to set the convergence, the red will not move whatever I do, but the blue works fine.

If it is rear projection set it uses either two of the STK-392-020 OR STK-392-040 CHIPS FOR CONVERGENCE OUTPUT.

BOTH WILL HAVE TO BE REPLACED; NOTE THAT THESE SETS ALSO HAVE "PICO" FUSES ON THE BOARD FOR EACH CHIP--no movement means one of the fuses is blown because the chip shorted.

This can be a do it yourself repair if you are handy; total parts cost if the parts purchased on Ebay is under 30 dollars.

Let me know if I can assist you and if you have any questions reply to the posting here.


Aug 10, 2010 | Samsung PCN5425R 54" Rear Projection...

1 Answer

Toshiba 65hdx82 convergence issues

check fuse resistors near STK, and broken PCB around digital convergence board (board in a metal box verticaly mount beside STK.

Apr 23, 2010 | Toshiba 65HDX82 65" Rear Projection...

2 Answers

HCM4216W...replaced convergence board...still no dice..colors and tv are not focused...if that makes any sense...please help Samsung parts sent me the convergence board without the do i get one...

Do not take this the wrong way--I have seen several people make this kind of mistake--why on earth replace the board when you can buy the pair of chips for under 15 dollars?

At worst--there will be other than the chips a fuse on the board near them bad...

Look at the old board if you have it--this model should use STK-392-040 chips--I can tell you a seller who has them on EBAY---my point is these sets it is almost always better to just replace the chips and fuses if needed--

Do you have the old board? Can you return the new one for a refund?

I have repaired hundreds of sets with convergence problems and only a very few needed to have the board replaced.

I understand why this happens--people think it is easier to replace a board but they are wrong--it always costs more that way and presents problems.

Give me as much info as you can and those chips are readily available. I can tell you name of the seller I buy mine from--got several of the chips your set uses on hand right now.

If this helps you rate this solution as I do this here for free.

If you have questions or need any help ask me--I am here to help.

SD TECH6686d88.jpg

Dec 24, 2009 | Samsung HCN4226W 42" Rear Projection...

1 Answer

Hi. i have a 54 inch samsung rear projection tv. 2 years ago something happend within the tv and the picture was doubled. and there were red lines going through the tv. i had sears come out today and look...

This sounds like the most common thing that fails on projection TV's, regardless of the brand. The convergence circuit has two, or sometimes three STK IC chips mounted on heat sinks to drive the convergence yokes. They typically last anywhere from 5-10 years, then they fail.

It sounds like in your case, the solder joints on the bottom of one of these chips may be failing and some fresh solder will make it go for a while. I would recommend you to replace both the STK chips.
These ICs are used to align and keep aligned the three colors on the screen...


The parts you will need are two ic's that are referred to as STK ic's. This is in reference to the first three letters of the part number. You will also need some pico fuses. The pico fuses are little yellow fuses that look like resistors. When they blow, they will show no physical sign of failure. The amperage rating will be printed on the fuse. For example a 5 amp fuse will have the number 5000 on it. A 3.15 amp fuse will have the number 3150 on it. You will need to use an ohm meter to test these fuses

The stk ic's are on the "D" board, attached to large heat sinks, When looking from the back you can see the heat sinks but the part's themselves will be pointing away from you and hard to see without removing the board, or using a mirror to look at the part numbers. The fuses are generally located under the fins of the heat sinks. There are several of them and vary by model. On the "G" board there will be two yellow pico fuses near the connector going to "D" board. These fuses provide power to the stk ic's you must check these as well.

When replacing the STKs make sure you use heat sink compound on the back of the ic's before installing them. Also as a rule of thumb, screw or clamp the ic's down to their heat sinks before you solder the pins. Replace any blown pico fuses and re- install your boards. When you turn your set on it may still be out of convergence due to many factors. Try pressing the auto focus button on front of your set.

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Nov 11, 2009 | Samsung Televison & Video

1 Answer

Samsung hdtv projection has red double vision

your convergence isn't working this is done with the stk chips 3 look for a blown pico fuse or regular fuse a blown fuse will lead you to the faulty chip, replace all faulty components in the circuit,

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1 Answer

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The STK's are probably blown again. You need to pay close attention to the resistors around the STK's. If you have ANY bad ones you have most likely reblown those chips. Let me know if this helps.

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No lo creo ,ya que el problema puede ser el circuito horizontal checalo o manda la tv a un taller.

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