Question about Hitachi 53UDX10B 53" Rear Projection Television

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Hi SD Tech, I am having the same exact convergence issue that others have described - the upper left hand corner of the screen is suddenly "curved" and the green and pink are separated on that whole side. I am pretty handy and am comfortable with the idea of replacing the chips, if you'll talk me through it. Much appreciations for this assistance!!!!!!

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  • Hitachi Master
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You need to open set (unplugged) and look for the chips, they should as you look from the back be towards the right side on metal heat sinks with fins----typical for this model is STK-392-150 and set uses 2 of them.

Examine resistors in front--see attached photos- to make sure none are burnt or discolored in the middle.

A photo of the chassis from the rear would tell me the best way for you to get at them----most of these sets you can free and lift the board they are on up so you can un-solder and remove them.

Best place for the parts is on EBAY---I know a seller there I use and you can also find his online company catalog---SUBURBAN ELECTRONICS, in Maryland--fast shipper and good parts.


Total parts cost should be under 25 dollars and if handy a do it yourself job.

Let me know with a very helpful rating and we can continue.

SD TECH

Posted on Sep 05, 2010

  • thilmony Sep 05, 2010

    Thanks so much for the quick response! You mention attached photos - do I need to go to another site to see them?

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  • Hitachi Master
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Projection TV sets are known to have two common problems. The first problem that is common to these sets is convergence failure. When this happens the TV will usually look 3D, Wavy/Distorted, etc. It may also shutdown and blink an error code.

The second common problem with Projection TV sets is dull video, halos around objects, white looking video, or red overpowers the screen. This is commonly caused by the fluid in the lens being clouded overs.

To get fixed either call in a local TV repair company or goto sites such as www.TvRepairKits.com to get a repair kit with instructions.

Posted on Sep 24, 2010

  • tommymusic Mar 24, 2011

    muy agradecido los felicito tommymusic@hotmail.com

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1 Answer

I have curves on the convergance screen


iF the convergence will not adjust (bowed or 3d etc) the two convergence chips need to be replaced.

If you can solder this is a very basic repair (board is behind front grill---see photos)

Fixya now has a Beta Site where you can choose specific experts to assist you.

I am there also as SD TECH

I can tell you how to get at the board and exactly what to replace/look for.

Parts cost should (from the right source) be well under twenty five dollars.

let me know if you have questions or wish to attempt the repair and or use the BETA site.


SD TECH


sd_tech_98.jpg

TYPICAL CONVERGENCE PROBLEM





sd_tech_99.jpg


Convergence circuit board in your set.

Sep 17, 2011 | JVC AV-65WP55 65" Rear Projection...

2 Answers

Suddenly a curved line appeared in the upper left and lower right corner ....and words like "muting" and lower right words are doubled with a red virtual image....the main picture in the center is pretty...


Convergence problem---set uses two of the STK-392-560 convergence chips.

Both will have to be replaced and set adjusted with remote.

Total parts cost on EBAY under 25 dollars.


I can tell you what is involved.

see attached photo of typical convergence problem and typical convergence chip.

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

SD TECH


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Sep 03, 2010 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Yellow arch on bottom left of screen. I have


OK, HERE are the instructions:
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With the set on press MUTE on the remote.

Then press and HOLD mute for several seconds and while still holding it on the remote press Menu on the front of the set.

A (S) should appear in the upper right corner of the screen. (It means you are in the Service mode)

Press menu again on the front of the set

7 on the remote will call up the convergence grid

3 on the remote will change the color to adjust from red to green to blue(do not adjust GREEN)


You navigate the grid with 2, 4, 6, and 8 buttons.

To stop the cursor from blinking so you can adjust at any point use the 5 button—to move again use the 5 button.


When you finish you exit by hitting 7 on the remote again.


Sometimes you have to try a few times to get into the menu—I have had my problems but once in it is easy.


if adjusting does not cure the problem one of the convergence chips this set uses and or a resistor are bad.

Let me know what happens and if you need more help let me know
SD TECH



Sep 30, 2009 | Toshiba TP50H50 50" Rear Projection...

1 Answer

Tearing Blue streak from top left.


The convergence amplifier responsible for blue is dying. Soon blue will be off all over the screen when it fails completely. Only solution is to have the convergence output IC's replaced.

May 27, 2009 | Sony KP-53S65 53" Rear Projection...

1 Answer

Convergence is off in the lower right and upper left corner


The repair isn't too complicated if you're comfortable working with a soldering iron. Sounds like one of the "guns" is shot. The chips that need replacing are attached to the heatsink on the convergence board. The reason for replacing both chips is if you're going to bother to take the board out and replace one bad chip, that is the best time to replace the other older chip. The link below is to step by step instructions including pictures of the repair. You can check it out to see if you want to try it. If not, the repair is expensive (between 250-400) depending on the repairman. Best of luck with your convergence problem.
Greg

http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

May 23, 2009 | Toshiba 50A61 50" Rear Projection...

1 Answer

I believe i have a model # 60pp9352 60 in rear proj the problem is with convergence but might be more intense as there is a blue lobe in the lower left hand corner and a curvurture in the left upper...


Convergence ICs there are two of them both STK392-120 and you will need two 6.8 ohm resistors. You can get the replacement parts at the following link with free installation instructions with pictures.
http://servicemanuals.vstore.ca/

Aug 31, 2008 | Televison & Video

2 Answers

Unable to resolve concave issues


I am also having the same problem. I tried to replace ICs but no luck. I am also looking for service manual in case if some one can give it to me.

Thanks,
Sanjay

Jun 24, 2008 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

I have a phillips rear projection 51PW9303 red and green lines showing in the left corners and red line thru middle of screen, bottom of screen shadows and so does left top corner if numbers and...


sounds like youre describing a convergence problem. Do the letters look like theyre 3D? If so you will need to replace both Convergence ICs STK392-120 you can get replacements at the following link and they include installation instructions with pictures plus gree tech support. heres the link.
http://servicemanuals.vstore.ca/

Apr 24, 2008 | Televison & Video

1 Answer

Convergence problem?


The convergence anp ICs are usually what go bad in that unit. They are two ICs both are STK392-040 and they are at board location ICZ103 and IZC103 on the Sub Board attached to large heat sinks. You can get replacements with free installation instructions and free on line tech support at the following link.
http://servicemanuals.vstore.ca/
let me know if you need further assistance.

Apr 10, 2008 | Samsung HCL4715W 47" Rear Projection...

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