Question about Toshiba 55H70 55" Rear Projection Television

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Convergence tp55e50 I have the tp55e50 and I have a convergence problem only the right side of the tv is aligned the left side the blue is out of wack. I was told to change out the IC STK s is this true? also i was told the part number was IC, STK392-110T could you please tell me if this is the proper chip and if so are all 4 alike in the tv? Or is there a better chip or better solution to my problem? Thank you! Taylor

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Re: convergence tp55e50

There are two Ics that need to be change to correct the convergency problem. These parts are mounted on a big heatsink.
Check this site for cheaper parts: //

Posted on Jan 26, 2008

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How do I adjust the convergence properties on an RCA rear projection tv?

Normally on the RCA rear projection TV's you would bring up your menu and choose the Setup menu, then press OK on the remote. That menu would then have Convergence as a choice. Once that was chosen the next menu would give you the choice of either letting the TV run it's own Autoconvergence program, or you would select either Red or Blue convergence.

Choosing Red Convergence would bring up a Yellow cross-hair in the middle of the screen. If the Convergence was not correct you would see separate Green and Red cross-hairs. Once they were perfectly aligned you would again see one Yellow cross-hair.

Choosing Blue Convergence would bring up a Blue cross-hair in the center of the screen. If the alignment was out you would see 2 Blue cross-hairs. Using the Up and Down and Left and Right cursor keys you would adjust the alignment until a single solid Blue cross-hair was in the center of the screen.

May 15, 2011 | RCA Projection Televisions

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I have a Panasonic PT-53WX54J that will not Converge

you need to replace or have professional convergence amplifiiers. If know how to desolder and solder you could repair yourself or in home professional tv repairperson will cost you $275-$400. The convergence adjustments via remote are half the battle the IC's loose clarity over time.

Aug 23, 2009 | Panasonic Projection Televisions

1 Answer

Pioneer SD-641HD5 red convergence - not chip problem!

Replace Both of your STKs if they are STK392-110s do not go back with them use STK392-180s better ICs, The 110s fall apart and do not hold up.

Nov 12, 2008 | Pioneer SD-533HD5 53" Rear Projection HDTV

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Convergence issue

try fixing the convergence 2 after your've aligned the convergence 1 - the second (accessed via the set up control) let's you adjust on 9 different axis to align the red and blue tubes to the green. you select which + sign you want to adust by pressing the corresponding number for the + ie 1 for the top left, and 9 for the lower right corner.

good luck (note - you cant change the green only the red and blue, if the whole edge is a mess try moving the image (you need to be in zoom mode, and then access the position adjustment via the pitcure set up screen.

Nov 05, 2008 | Panasonic PT-47WX49 47" Rear Projection...

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Sony KP-53XBR45 convergence

Hey, found the problem. Your Convergence IC chip went bad. Buy one at Bluestar International Components ( - order part number STK392-010 for 6.99. I've read that there are two in the system and replacing them both at same time is a good, order 2. Now, if you are handy, it will require you to open the back of the TV and solder out the old chip and replace with new. If not, then you might as well call a TV repair person and have them fix. However, every place I've called works on a minimum fee for "large screen TVs" - the cheapest I could find in Atlanta was $399 minimum service fee. So, I'm going to risk the home sodering job .... it's a 10 year old TV and as good as it's been to me, if I screw it up, I feel I've gotten my money out of it. Good luck with your repair. My parts are on order.

Oct 15, 2008 | Sony KP-53XBR45 53" Rear Projection...

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Convergence -manual

Replace the convergence amps and test and replace any or all of the 2.2ohm resistors in the yoke return path out in front of the amps. This unit takes two STK392-110 Sanyo originals, DO NOT GET CHINESE KNOCK-OFFS... Buy them from Acme sales out of Florida and you can be assured they're originals.

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631

Oct 11, 2008 | Toshiba 42H81 42" Rear Projection...

1 Answer

Red horizonal convergence tilts instead of adjusting evenly.

For your hitachi unit one of the convergence IC is bad along with couple of low value resistance on
the convrgence board.

Good luck

Oct 09, 2008 | Hitachi 53FDX01B 53" Rear Projection...

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51mp392h Blue Convergence Problem

Hello rogeuryder,

This is the one thing that even make TV repair persons shudder. You don't really have a convergence problem in the normal sense. The convergence works. What you have is a misaligned convergence situation which any documentation and or book on TV repair will tell you that at this point manual convergence adjustment is needed and the only thing you will have to do is keep trying to adjust the convergence until you get the center aligned, and then work towards the outer edges using both static (Center) and dynamic (outer edges) convergence techniques.

As this may sound it is; Very Very Tedious.

Here is something that may help you:,M1

I have used this book when I use to teach TV repair. I hope you discover what I am tried to convey in my e-mail, this is no longer a question of can you fix a TV? It has become a question of do you have the patience to adjust a TV.

Good fortune in doing this, you will succeed if you just take your time and do static convergence first and then do the dynamic convergence with the manual controls. The procedure will be in the service manual.

I hope this helps

Thank you,


Jul 25, 2008 | Philips Magnavox 51MP392H Rear Projection...

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are you able to adjust the convergence in all 4 directions for both red and blue? If not the Convergence ICs are bad and need replacing. If you ned more info let me know.

Apr 08, 2008 | Projection Televisions

1 Answer

Blue convergence wont align left and right

I'm having the same issue but with Green. Check out this guys blog he had a similar problem and fixed it.

Nov 29, 2007 | Panasonic PT-47WX49 47" Rear Projection...

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