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I have a Philips 60 inch projection TV model 60PP9352. It developed a problem with the Red convergence. I replaced both STK392-20 ICs. After they were replaced, the Red was converging but the blue was not. I tried another pair of stk392-20 chips but with the same result. I attempted to adjust the blue as well as possible but the center horizontal part of the screen would just not converge and the blue was wavy in the middle horizontal portion of the screen. I then left the set on for an hour to see if I could locate a hot spot and take voltage readings per the service manual. The set then powered down on its own while nothing was being done. The power light comes on now but the set just makes a chirp sound as if something is shorting out the transformer. Do you have any suggestions as to what bthe problem might be? I checked all biasing resrstors to the stx392-20 ics as well as the horizontal output transistor BU2520AF. I have also been looking for shorted components but have not found any.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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techman
  • 3130 Answers

SOURCE: Location of the STK392-110

The convergence IC's are large 2x3 inch(about) black in color IC's that stand up against a metal heatsink on the main printed circuit board. They will have white lettering on them that will plain as day when you see them. Make sure you replace these IC's with the manufacturers replacements and not some cheap copy, if the IC's cost less the 15 bucks a pop, they are cheap subs. Also do not forget the heatsink compound on the back of the new replacement IC's before you reinstall them. Good Luck

Posted on Mar 20, 2007

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SOURCE: Convergence IC STK392-110 vs STK392-110T

If you are removing a defective chip, can you just cut the pins carefully with a wire cutter and later apply heat to pull them off?

J.

Posted on Jan 29, 2008

Slinteriors
  • 8617 Answers

SOURCE: Samsung STK392-010 ICs Convergence Issue.

Its a fairly straight forward repair. i would recomend getting your replacement Ics at the following link, as they provide free instaltion instructions with pictures, free shipping and free online instant messageing when you do the repair in case you need assistance. Heres the link.
http://servicemanuals.vstore.ca/

Posted on Jul 17, 2008

Slinteriors
  • 8617 Answers

SOURCE: 42H83 Convergence

Yes the convergence ICs need to be replaced, however so dont the six 1.8 ohm 1watt resistors as Toshiba recomends replacing those six resistors when the ICs are changed. You can get the 50H71 / 50H82 Convergence repair kit as the 42H83 is identical to the 50H71 series, so the kit will work for your model. Heres the link where you can get the kit.
http://servicemanuals.vstore.ca/

Posted on Aug 10, 2008

Ecollier2012
  • 3459 Answers

SOURCE: poor colour balance

Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
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 #1

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 note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Posted on Apr 08, 2009

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My TV shows doubles of everything as the picture gets close to the four corners. The picture in the center is great, just gets worse and doubled at the edges. Any ideas what this could be?


That sounds like the classic convergence failure. Replaceing the two ICs and 12 resistors should solve the problem. The DPTV305 - DPTV345 convergence repair kit from www.tvrepairworld.com is the correct kit for your model which includes both ICs the 12 resistors and the CD with repair instructions.

Nov 05, 2010 | Philips 60PP9352 60" Rear Projection...

1 Answer

I have a 60 inch Philips tv and the picture is kind of blury and a little red. What is tha caused from?


THREE possible reasons for this:
I will list each and describe for you:

1.) If redish picture go to a black and white channel; is the screen somewhat red or black and White? This is adjustable from inside the set.

2.) If colors are skewed or look like they have a red outline it may be a convergence problem. See attached photo.

3.) Some of these sets develop a problem with the coolant which is used to keep the face of each of the three tubes cool; it is called Glycol. You would have to remove back cover and with set on look into each of the three lens (red,green,blue) to see if you have a clear red, green and blue picture.

Which best describes your problem?

SD TECHf0b8356.jpg

Aug 10, 2010 | Philips 60PP9352 60" Rear Projection...

1 Answer

Dont have the remote and blue, green, red lines dont align w/ pic


Convergence problem - a tech may decide to change the convergence ICs

May 27, 2010 | Philips 60PP9352 60" Rear Projection...

1 Answer

Red is way off


The two STK392-120 Convergence ICs needs to be replaced and also some of the 6.8 ohm 1watt resistors will usually need replacement when the ICs fail. You can get the kit for your model which includes both ICs and all 12 of the 6.8 ohm resistors plus step by step detailed instructions for your model. Heres a link to the repoair kit for your model.
http://servicemanuals.vstore.ca/product_info.php/pName/phillips-dptv-305-dptv345-convergence-repair-kit/cName/convergence-repair-kits

Mar 29, 2009 | Philips 60PP9352 60" Rear Projection...

1 Answer

Convergence problem with Philips 60PP9352




You have a convergence problem. Here are some of the most common symptoms. 

Screen looks 3D
One or more colors can't be adjusted when when using the convergence menu. 
Screen is bowed in but stationary.

Solution: 
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit inlcludes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. Its an easy fix. 

Oct 01, 2008 | Philips 60PP9352 60" Rear Projection...

1 Answer

60PP9352 philip hdtv


Classic symptom - Your convergence chips are toast.You can 
get a repair kit with photo instructions from www.TvRepairKits.com. 

Sep 30, 2008 | Philips 60PP9352 60" Rear Projection...

1 Answer

I have a phillips 60 inch projection tv double picture


Yes its the convergence ICs. You will need ywo STK392-120 ICs and about six of the 6.8 ohm 1watt metal resistors to repair the issue. You can get replacement ICs and resistors at the following link and they will provide free instalation instructions with pictures so you can easially do the repair yourself and save about 400.00. Here is the link.
http://servicemanuals.vstore.ca/

Jul 10, 2008 | Philips 60PP9202 60" Rear Projection...

1 Answer

60PP9352 60 in. Rear - Blue convergence issue


Replacing only the ICs MAY solve the problem, however, many people have also had blown resistors requiring replacement. Also the convergence board should be checked for cracked solder. If you replace the ICs and the resistors are shot, the ICs may blow again almost immediately, meaning you may have to do the repair twice.
You do not have to replace any transistors to fix this convergence failure.

May 28, 2008 | Philips 60PP9352 60" Rear Projection...

1 Answer

PHILIPS 43P8341 CONVERGENCE OF GREEN AND RED


Look for the STK ICs mounted on 2 big heatsinks.
I would suggest to replace both of them once you have the TV taken apart.
I think the part markings are STK392-040.
Let me know if you need further assistance.

Apr 29, 2008 | Philips 60PP9352 60" Rear Projection...

1 Answer

CONVERGENCE


Your Ics are bad and you prob have a resistor or two that have gone out too. If you are good with a soldering iron and have an hour to give up you can fix it. They are at location 7044 and 7045 on your board. They are STK 392-120's and the part number is 932212344682 good luck with you repair.

Feb 06, 2008 | Philips 60PP9352 60" Rear Projection...

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