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I was just wondering how hard it is for an amateur not familiar with tv repair to replace convergence chips.

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It's hard for even the "Experts" ... It requires a fair amount of skill to locate, de-solder and re-solder IC's into/onto the board. Remembering also that there are LETHAL Currents in TV sets. That said if one is methodical & careful & can solder well... then it shouldn't be too much of a mission... But how do we know replacing those chips WILL remedy the situation? You see inboard parts seldom spontaneously fail, usually something has "Taken them out" so to speak. The "Root cause" must always be found otherwise the repair will simply fail again.

Posted on Feb 03, 2010

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I own a jvc HD-Z70RF7... My problem is a shadow that is now covering most of the screenfrom inside the tv ...how do we fix this problem


Im not familiar with that exact model but it sounds like your convergence chips have gone out. You can google tv repair kits or convergence chips to find DIY parts

Mar 28, 2012 | JVC Televison & Video

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I have a Panasonic PT-47WX53, this morning when i went to turn the TV on the picture was not align. The red and blue look aligned but not the green, i opened the back and when I coved the green light the...


This kind of problem occurs due to failure of convergence output chips located on main circuit board of tv and replacement of convergence output chips will hopefully solve your tv problem.
Soldering work is involve to replace these two chips so have local tv repairman for that job if you are not familiar doing so.
Thanks.

Jun 29, 2011 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Colors overlap each other and looks 3d


Hi,
This is symptom of bad convergence that happens due to failure of convergence output chips in tv, there are two big black chips attached with big aluminum heat sink that will be replaced to solve tv issue.
If you are not familiar with electronics stuff repair then call local tv repairman to replace above said chips to fix the problem.
Hope this will help.
Thanks.

Apr 05, 2011 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Panasonic projection tv pt-53wx52c no picture red light flashing 3 times have sound


Hi,
3 times red light flashing is an error code that indicates problem in convergence output section, please check and replace convergence output chips and pico fuse nearby. Chips replacement in circuit board requires soldering work and local tv repair shop will help you if you are not familiar with soldering.
Hope this will help.
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Mar 28, 2011 | Panasonic PT-53WX53 53" Rear Projection...

1 Answer

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This is symptom of convergence output chips failure in rear projection tv, replacement of convergence output chips will fix the problem.
Chips/ IC replacement requires soldering work in circuit board, if you are not familiar with electronics stuff fixing an soldering work, call local tv repairman to help you.
Thanks.

Oct 26, 2010 | Hitachi 46F500 46" Rear Projection...

1 Answer

Tv wont turn on


You need 2 STK392-110 Convergence ICs and possibly 6 2.2 ohm 2watt resistors. You can get the convergence repair kit for your model from www.tvrepairworld.com the kit contains the ICs, resistors and the CD with instructions. The PT47WX42 convergence kit is the correct one for your model.

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2 Answers

The screen on my toshiba 50h12 is messed up. its as though the horizontal is not matching up...how can i fix this myself?


It sounds convergence out chips got bad in your Tv and causing problem. Replace convergence out ICs in TV if you are familiar with electronic stuff repair.
Required parts are available in Part Store.

Dec 24, 2009 | Toshiba 50H81 50" Rear Projection...

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I have a 50HX81 projection television. I cannot converge the color to work. When I hit the focus button on the TV, it says Focus Error. I tried to do it manually but the blue + does nnot hardly move. When...


Thanks for the info, I was quickly able to Locate chip and found a glazed substance had leaked out on top of chip.

Ran finger across top and it crumbled into dust. STK392-110
What does D2A10 in the top right hand corner mean? Stype/Type/Manufacturer?

11_22_2011_6_20_32_pm.jpg

Jun 09, 2009 | Toshiba Televison & Video

2 Answers

Double Image


need to change convergence ICs

If you need more info., let me know and I can go over the details
mahi@pacbell.net

Sep 08, 2008 | Sony KP-57WS510 57" Rear Projection HDTV

1 Answer

Model 9P6040C104


Your TV most likely has one of two 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
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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.

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TV set after fluid change

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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.

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